2019

AAPM Presentations:

• IROC Houston QA Center's International Anthropomorphic Phantom Activity Andrea Molineu, Paola Alvarez, Paige Taylor, Jessica Lowenstein, Stephen Kry, David Followill

• The magnitude of dose calculation errors as a component of the IROC lung and spine phantom failures Sharbacha S. Edward, Mallory C. Glenn, Christine B. Peterson, Peter A. Balter, Rebecca M. Howell, Julianne M. Pollard-Larkin, David S. Followill,Stephen F. Kry

• Differences in patterns of failure between the Imaging and Radiation Oncology Core (IROC Houston) Lung and Spine phantoms Sharbacha S. Edward, Paola E. Alvarez, Paige A. Taylor, H. Andrea Molineu, David S. Followill, Stephen F. Kry

• Micro-Cube Thermoluminescent Dosimeters for Small Field Dosimetry Quality Assurance B Lucket*, P Alvarez , P Taylor , S Kry , C Peterson , D Luo , D Followill

AAPM Posters:

• IROC Radiation Therapy QA Centers: 5 Years of Support of the NCI’s NCTN Clinical Trials D Followill*, Y Xiao, J Michalski, and T FitzGerald

• Results of IROC Anthropomorphic Liver Phantom Irradiations with Protons and Photons P. Taylor, P. Alvarez, H. Mehrens, and D. Followill

• Criteria for the evaluation of the percentage depth dose for electron beam based on OSLD measurements P. Alvarez, P. Taylor, J. Leif, A. Molineu, S. Kryand D. Followill

• Consistency in assessment of relative biological effectiveness in carbon ion radiotherapy S Hartzell, F Guan, O Vasilliev, C Peterson, P Taylor, S Kry

• Survey Results of Current Standards for Verifying Patient Positioning and Dose Delivery in IMRT H Mehrens, D Followill, S F Kry

• Prescription Level Distance-To-Agreement Criteria for IROC-Houston's SRS Head Phantom H Mehrens, N Hernandez , T Nguyen , B Lewis , N Pajot , A Molineu , P Alvarez , S Kry , D Followill

• Introducing uncertainty in measurement based assessment of relative biological effectiveness in carbon ion radiotherapy S Hartzell, F Guan, O Vasilliev, C Peterson, P Taylor, S Kry

• Sensitivity Analysis of Common Beam Modeling Parameters in the Eclipse Treatment Planning System on IROC Head and Neck Phantom Results M Glenn, D Followill, R Howell, J Pollard-Larkin, C Peterson, S Kry

• Have Benchmarks and Pre-treatment Reviews Impacted the Clinical Trial Deviation Rate? J. Lowenstein, H. Nguyen, J.Roll, and D. Followill

2018

AAPM Presentations:

• The 50thAnniversary of the Radiological Physics Center (RPC)/IROC Houston QA Center Activities and Findings D Followill

• Using Scientific Thought to Avoid Mistakes D Followill

• Treatment Planning System Beam Modeling Parameters Exhibit High Variation Among Radiotherapy Institutions Mallory Carson Glenn, BS

• Evaluation Criteria for IROC’s Proton Prostate Phantom Paige Taylor, M.S.

AAPM Posters:

• IGRT Credentialing for NCI Sponsored Clinical Trials A Molineu, P Chi, J Lowenstein, D Followill

• Imaging and Radiation Oncology Core (IROC) Houston QA Center’s Credentialing Letters for Randomized Photon vs Proton NCI Trials H Mehrens, B Lewis, T Nguyen, N. Pajot, N Hernandez, P. Taylor, A Molineu, D Followill

• Evaluation of Proton Therapy Dose Calculations in a Simple Geometrical Static Lung Phantom Daniela Branco, Paige Taylor, Stephen Kry, Dragan Mirkovic, David Followill

• A Pilot Study of IROC’s Proton Head & Neck Phantom Paige A. Taylor, Daniela Branco, Nadia Hernandez, & David S. Followill

2017

AAPM Presentations:

• IROC Houston QA Center End-to-End QA phantom Program Key Findings Over the Past 15 Years D Followill, A Molineu, P Alvarez, J Lowenstein, P Taylor, N Hernandez, T Nguyen, H Mehrens, B Lewis, S Kry

• Dose to Water vs. Muscle: Rationale S Kry

• Assessing the Risk of CIED Malfunction from Radiation S Kry

• An Update On the Dosimetric Accuracy of Different Treatment Planning System Algorithms in the IROC Lung Phantom S Kry, A Molineu, P Alvarez, D Followill

• IROC-Houston's Pediatric TBI Phantom Credentialing Program A Molineu, H Mehrens, D Followill

• Clinical Trial Credentialing: Where to Start and Resources Available A Molineu

• Monte Carlo Shows Large Improvement Over Analytic Algorithms in Calculating Proton Therapy Dose to Thoracic Tumors in IROC Lung Phantom P Taylor, S Kry, D Followill

AAPM Posters:

• IROC Houston QA Center S Independent Peer Review Quality Assurance Program for the Veteran Affairs VA Radiotherapy Facilities P Alvarez, A Molineu, J Lowenstein, P Taylor, S Kry, D Followill

• What Is the IROC Roster? J Lowenstein, P Holguin, D Followill

• IROC-Houston's New Automated Process for Issuing Credentialing Letters H Mehrens, N Hernandez, B Lewis, T Nguyen, A Molineu, D Followill

2016

AAPM Presentations:

• Examining Credentialing Criteria and Poor Performance Indicators for IROC Houston’s Anthropomorphic Head and Neck Phantom M Carson, A Molineu, P Taylor, D Followill, S Kry

• Measurement and Calibration Discrepancy: Advanced Warning Guidance D Followill

• Lessons Learned from IROC Houston Audits D Followill

• Identifying Treatment Planning System errors through IROC-H Head & Neck phantom irradiations J Kerns, D Followill, R Howell, A Melancon, F Stingo, S Kry

• TG 191: The Clinical Use of Luminescent Dosimeters S Kry

AAPM Posters:

• Independent Remote Audits for TG-51 Non-Compliant Photon Beams Performed by the IROC Houston QA Center P Alvarez, A Molineu, J Lowenstein, P Taylor, S Kry, D Followill

• Development and Implementation of an Anthopomorphic Head and Neck Phantom for the Assessment of Proton Therapy Treatment Procedures D Branco, P Taylor, X Zhang, H Li, M Guidani, H Mehrens, D Followill

• The Imaging and Radiation Oncology Core (IROC) Cooperative’s Activities Supporting the NCI’s National Clinical Trial Network D Followill, J Galvin, J Michalski, M Rosen, T Fitzgerald, M Knopp

• IGRT Credentialing in NCTN Trials J Lowenstein, A Molineu, H Al-Hallaq, M Matuszak, T Craig, K Ulin, Y Xiao, F Yin, D Followill

• Imaging and Radiation Oncology Core (IROC) Houston QA Center’s Anthropomorphic Phantom Statistics H Mehrens, B Lewis, C Lujano, T Nguyen, N Hernandez, P Alvarez, A Molineu, D Followill

• IROC Houston and MDAPL SRS Anthropomorphic Phantom Results A Molineu, S Kry, P Alvarez, N Hernandez, T Nguyen, D Followill

• Proton Therapy Tissue-Equivalence of 3D Printed Materials P Taylor, D Craft, D Followill, R Howell

2015

AAPM Presentations:

• An Evaluation of Out-Of-Field Doses for Electron Beams From Modern Varian and Elekta Linear Accelerators C Cardenas, P Nitsch, R Kudchadker, R Howell, S Kry

• A Phantom Study to Assess the Variability in Radiomics Features Extracted From Cone-Beam CT Images X Fave, D Fried, L Zhang, J Yang, P Balter, D Followill, D Gomez , A Jones, F Stingo, L Court

• The Imaging and Radiation Oncology Core (IROC) Houston QA Center’s International Activities Outside North America D Followill, S Kry, A Molineu, J Lowenstein, P Alvarez, P Taylor, H Nguyen, N Hernandez, C Lujano, T Nguyen, T Keith, J Roll, A Tailor

• SBRT Credentialing: Understanding the Process From Inquiry to Approval D Followill

• Pseudo In Vivo Patient Dosimetry Using a 3D-Printed Patient-Specific Phantom R Ger1, EA Burgett, RR Price, DF Craft, SF Kry, RM Howell

• Common Errors and Deficiencies in Radiation Oncology Practice S Kry, L Dromgoole, P Alvarez, J Lowenstein, A Molineu, P Taylor, D Followill

• IROC Houston On-Site Audits and Parameters That Affect Performance S Kry, L Dromgoole, P Alvarez, J Lowenstein, A Molineu, P Taylor, D Followill

• Overview of Non-Target Doses, Concerns, and Summary of Recommendations S Kry

• Results From Multi-Institutional Measurements with An Anthropomorphic Spine Phantom A Molineu, N Hernandez, P Alvarez, D Followill

• A Comparison of CT Number to Relative Linear Stopping Power Conversion Curves Used by Proton Therapy Centers P Taylor, J Lowenstein, S Kry, G Ibbott, D Followill

• IROC Houston's Proton Beam Validation for Clinical Trials P Taylor

AAPM Posters:

• An Evaluation of Multiple Irradiations of the IROC Houston QA Center Anthropomorphic Liver Phantom P Alvarez, A Molineu, C Lujano, T Nguyen, D Followill

• Volume-Dependence of Quantitative Imaging Features From CT and CE-CT Images of NSCLC X Fave, D Fried, L Zhang, J Yang, P Balter, D Followill, D Gomez , A Jones, F Stingo, L Court

• Dosimetric Impact of Implementing Metal Artifact Reduction Methods and Metal Energy Deposition Kernels for Photon Dose Calculations J Huang, D Followill, R Howell, X Liu, D Mirkovic, F Stingo, S Kry

• Validation of a Secondary TPS for IROC-H Recalculation of Anthropomorphic Phantoms J Kerns, R Howell, D Followill, A Melancon, F Stingo, S Kry

• An Analysis of TG-51 Electron Beam Calibration Correction Factor Uncertainty P Lee, P Alvarez, P Taylor, J Lowenstein, A Molineu, S Kry, D Followill

• IROC Houston QA Center's Anthropomorphic Proton Phantom Program C Lujano, N Hernandez, T Keith, T Nguyen, P Taylor, A Molineu, D Followill

• Benchmarks and Pre-Treatment Reviews: A Study of Quality Assurance Effectiveness J Lowenstein, H Nguyen, J Roll, A Walsh, A Tailor, D Followill

• Uncertainties in Treatment Planning for IROC-Houston Proton Phantom QA Program Due to Variable CT Technique and Proton Energy M McInnis, P Taylor, F Poenisch, L Court, M Guindani, D Followill

• An FMEA Survey of Intensity Modulated Radiation Therapy (IMRT) Step and Shoot Dose Delivery Failure Modes J Tonigan Faught, J Johnson, F Stingo, S Kry, L Court, P Balter, D Followill

• Clinical Impact of IMRT Failure Modes at Or Near TG-142 Tolerance Criteria Levels J Tonigan Faught, P Balter, J Johnson, S Kry, L Court, F Stingo, D Followill

• Characterizing Tissue Equivalent Materials for the Development of a Dual MRI-CT Heterogeneous Anthropomorphic Phantom Designed Specifically for MRI Guided Radiotherapy Systems A Steinmann, R Stafford, J Yung, D Followill

• Characterization of the New Xoft Axxent Electronic Brachytherapy Source Using PRESAGE Dosimeters A Steinmann, J Adamovics, D Followill, G Ibbott

SWAAPM Posters:

• An Evaluation of Out-of-Field Doses for Electron Beam Applicators on Varian and Elekta Linear Accelerators C Cardenas, P Nitsch, R Kudchadker, R Howell, S Kry

2014

ASTRO Presentations:

• IROC: Imaging and Radiation Oncology Core David Followill

ASTRO Posters:

• The Credentialing Process for the NSABP B-51/RTOG 1304 Phase III Randomized Clinical Trial Jessica Lowenstein, Hannah Nguyen, Ashley Hollan, James Galvin, David Followill, Darlene Kiniry, Thomas Julian, Eleftherios Mamounas, Julia White, Atif Kahn, Simona Shaitelman, Mylin Torres, Frank Vicini, Norman Wolmark, Walter Curran

• Compilation of Proton Therapy Data from the Approval Process for NCI-funded Clinical Trials Paige Summers, Geoffrey Ibbott, Paola Alvarez, Michael Moyers, Ryan Lafratta, David Followill

AAPM Presentations:

• The Radiological Physics Center (RPC): 45 Years of Improving Radiotherapy Dosimetry David Followill, Jessica Lowenstein, Andrea Molineu, Paola Alvarez, Paige Summers, Stephen Kry

• Imaging and Radiation Oncology Core Cooperative: QA Center Organization and Core Services David Followill

• An Evaluation of Three Commercial Metal Artifact Reduction Methods for CT Simulations in Radiation Therapy Treatment Planning Jessie Huang, James Kerns, Jessica Nute, X. Liu, David Followill, Dragan Mirkovic, Rebecca Howell, Stephen Kry

• Stop Lecturing Me! New Methods for Teaching Medical Physics Stephen Kry

• Uncertainty Analysis for Dose Measurements Using OSLD NanoDots Stephen Kry, Paola Alvarez, Francesco Stingo, David Followill

• A Survey of Current IMRT QA Practices Kiley Pulliam, James Kerns, Rebecca Howell, David Followill, Jennifer O’Daniel, Stephen Kry

AAPM Posters:

• Evaluation of the microSTAR reader for the OSLD system for the remote dosimetry audits at the IROC HQAC P. Alvarez, S. Gonzalez, L. McDonald, D. Followill

• Imaging and Radiation Oncology Core (IROC) Houston QA Center (RPC) Credentialing Carrie F. Amador, Tyler Keith, Trang Nguyen, Andrea Molineu, David Followill

• Development and Implementation of an Anthropomorphic Pediatric Spine Phantom for the Assessment of Craniospinal Irradiation Procedures in Proton Therapy Dana J. Lewis, Paige A. Summers, David S. Followill, Narayan Sahoo, Anita Mahajan, Francesco C. Stingo, Stephen F. Kry

• Development of an independent, Monte Carlo, dose calculation, quality assurance tool for clinical trials Austin M. Faught, Scott E. Davidson, Jonas Fontenot, Stephen F. Kry, Carol Etzel, Geoffrey S. Ibbott, David S. Followill

• Technical Aspects of Credentialing for the NSABP B-51 / RTOG 1304 Trial Jessica R. Lowenstein, Hannah Nguyen, Ashley Hollan, James Galvin, David S. Followill

• Preliminary 2D and 3D Gamma calculation comparison using PRESAGE® Ryan Lafratta, James Yang, Narayan Sahoo, Susan Tucker, David Followill, Geoffrey Ibbott

• Is it feasible to tighten the criteria for IROC’s anthropomorphic phantoms? A. Molineu, P. Alvarez, S. Kry, and D. Followill

• Validation of the Use of OSLD for Carbon Beam Remote Dosimetry P Summers, J Lowenstein, O Jakel, H Prokesch, P Alvarez, D Followill

• FMEA severity scores: do we really know? Jacqueline Tonigan, Jennifer Lynn Johnson, Stephen Kry, Peter Balter, Laurence Edward Court, Francesco Stingo, David Followill

2013

ASTRO Posters

Common Errors Found in Low Dose Rate(LDR) Prostate Credentialing

AAPM Presentations

• Level of Accuracy Practically Achievable in Radiation Therapy David Followill and RPC staff

• The Imaging and Radiation Oncology Core (IROC) Group: A Proposed New Clinical Trial Quality Assurance Organization David Followill

• Design and verification of a heterogeneous proton equivalent thorax phantom for use in end-to-end assessment of pencil beam proton therapy J Neihart, N Sahoo, P Balter, P Summers, M Palmer, M Kerr, D Followill

• An Independent Audit and Analysis of Small Field Dosimetry Quality Assurance David Followill and RPC staff

• Radiological Physics Center (RPC) Approval of Proton Centers for NCI-Sponsored Clinical Trials Paige Summers

AAPM Posters:

• Characterization of Optically Stimulated Luminescence Dosimeters for Use in Small Photon Beam Dosimetry Christopher Pham, Paola Alvarez, Stephen Kry, Peter Balter, Francesco Stingo, David Followill

• Development of an independent, Monte Carlo, dose calculation, quality assurance tool for clinical trials Austin M. Faught, Scott E. Davidson, Jonas Fontenot, Stephen F. Kry, Carol Etzel, Geoffrey S. Ibbott, and David S. Followill

• Dosimetric impact of implementing kernel hardening and material-specific kernels in the convolution/superposition method Jessie Huang, David Eklund, Nathan Childress, Rebecca Howell, Dragan Mirkovic, and Stephen Kry

• Initial Results from Multiple Irradiations of an Anthropomorphic Liver Phantom Andrea Molineu, Paola Alvarez, Carrie Amador, Tim Craig, Mike Gillin, David S. Followill

• The Value of Rapid Reviews Jessica R. Lowenstein, Joye Roll, Ashley Hollan, Hannah Nguyen and David Followill

• Results of irradiations performed on Radiological Physics Center’s anthropomorphic lung phantom and respiratory simulating motion table Paola Alvarez, Andrea Molineu, Carrie Amador, Trang Nguyen, David S. Followill

• Investigation of 3D dosimetry for proton therapy using PRESAGE Mitchell Carroll, G. Ibbott, M. Gillin, J. Adamovics

• Towards Optimizing Patient Specific IMRT QA Techniques in the Accurate Detection of Acceptable and Unacceptable Plans Elizabeth McKenzie, Peter Balter, Jimmy Jones, David Followill, Francesco Stingo, Kiley Pulliam, Stephen Kry

• Reproducibility in the Field of Patient Specific IMRT QA Elizabeth McKenzie, Peter Balter, Jimmy Jones, David Followill , Francesco Stingo, Stephen Kry

• IMRT severity scoring for TG-100: Do you really know? Jacqueline Tonigan, Stephen Kry, Peter Balter, Austin Faught, David Followill

2012

AAPM Posters:

• Radiological Physics Center David S. Followill

• Evaluation of the Effectiveness of Analytical Anisotropic Algorithm in Flattened and Flattening-Filter-Free Beams for High Energy Dose Delivery Using the Radiological Physics Center Lung Phantom R Repchak, A Molineu, R Popple, S Kry, R Howell, D Followill

• Evaluation of AcurosXB deterministic algorithm for heterogeneous dose calculation in lung cancer with RPC thorax phantom Tao Han, Firas Mourtada, Roman Repchak, Jacqueline Tonigan, Justin Mikell, Rebecca Howell, Mohammad Salehpour, Andrea Molineu, and David Followill

• The Radiological Physics Center’s Credentialing Dosimetry Reviews: Their Effect on Clinical Trial Deviation Rates Ashley Hollan, Jessica Lowenstein, Hannah Nguyen, Franklin Hall, Irene Harris, Joye Roll, and David Followill

• Evaluation of the characteristics of TLD LiF:Mg.Ti-100 Powder: A Measure of Consistency Between Multiple Batches of Powder Paola Alvarez,Jose Francisco Aguirre, Susan Smith, David Followill

• The Radiological Physics Center’s Anthropomorphic Quality Assurance Phantom Program Carrie F. Amador, Nadia Hernandez, Andrea Molineu, Paola Alvarez, and David Followill

• Design, development, and evaluation of a modified, anthropomorphic, head and neck, quality assurance phantom for use in stereotactic radiosurgery Austin M. Faught, Stephen F. Kry, Dershan Luo, Andrea Molineu, Jim Galvin, Robert Drzymala, Robert Timmerman, Jason Sheehan, David Bellezza, Russell Gerber, Scott Davidson, Michael T. Gillin, Geoffrey S. Ibbott, and David S. Followill

• Development and Implementation of a Remote Audit Tool for High Dose Rate (HDR) 192Ir Brachytherapy Using Optically Stimulated Luminescence Dosimetry Kevin Casey, Paola Alvarez, Ann Lawyer, Stephen Kry, Rebecca Howell, Scott Davidson, David Followill

• Investigation of 3D Dosimetry for an Anthropomorphic Spine Phantom R. Grant, G. Ibbott, J. Yang, J. Adamovics, D Followill

• Three-Dimensional Measurements of Dose and LET from a Proton Beam via Polymer Gel Dosimetry K Vredevoogd, G Ibbott, M Gillin, N Sahoo, S Kry, K Gifford, M Maryanski

• Investigation of photon and proton overlapping fields in PRESAGE® dosimeters Mitchell Carroll, G. Ibbott, R. Grant, M. Gillin, J. Adamovics

• The magnitude of H&N IMRT dose delivery errors from three possible failure modes: beam quality, symmetry, and MLC position Jackie Tonigan, David Followill

• Comparison on Proton Therapy Institutional Data Paige Summers

• An Analysis of More Than 13,000 Patient-Specific IMRT QA Results K. Pulliam, D Followill, L Court, L Dong, M Gillin, K Prado, S Kry

• The RPC Proton Therapy Approval Process Paige Summers

• Development and Implementation of the use of Optically Stimulated Luminescent Detectors in the Radiological Physics Center Anthropomorphic Quality Assurance Phantoms Jennelle Bergene, Stephen Kry, Andrea Molineu, David Bellezza, Laurence Court, Valen Johnson, David Followill

• The effects of image resolution and noise on the gamma dose distribution comparison method Jessie Huang, Kiley Pulliam, David Followill, and Stephen Kry

• Calculation of high-resolution and spatially variant photon energy deposition kernels Jessie Huang, Nathan Childress, and Stephen Kry

• Ion Recombination Correction Factors (Pion) for Varian TrueBeam High Dose Rate Therapy Beams Stephen F. Kry, Richard Popple, Andrea Molineu, David S. Followill

• High-Energy Photon Standard Dosimetry Data: A Quality Assurance Tool Jessica R. Lowenstein, Stephen F. Kry, Andrea Molineu, Paola Alvarez, J. Francisco Aguirre, Paige Summer and David Followill

• 2D vs 3D Gamma Analysis: Establishment of Comparable Clinical Action Limits Kiley Pulliam, Ryan Bosca, David Followill, Jennifer O’Daniel, Stephen Kry

• Credentialing Results from the RPC’s Spine Anthropomorphic Phantom Andrea Molineu, Paola Alvarez,Nadia Hernandez, Fang-Fang Yin,and David Followill

• Investigation of a Commercial OSLD System for CT Dosimetry S Scarboro, D Cody, D Followill, P Alvarez,M McNitt-Gray, D Zhang, L Court, S Kry

• Radiation Related Second Cancers Stephen F. Kry

• Obtaining Elemental Tissue Composition of Proton Therapy Patients using PET : A Pilot Study Jongmin Cho, Geoffrey Ibbott, Michale Gillin, Carlos Gonzalez-Lepera and Osama Mawlawi

• Algorithms used in heterogeneous dose calculations show systematic error as measured with the Radiological Physics Center’s anthropomorphic thorax phantom used for RTOG credentialing Stephen Kry, Paola Alvarez, Andrea Molineu, Carrie Amador, James Galvin, & David Followill

• Comparison of Clinical Parameters for Proton Therapy in the United States Paige Summers, Geoff Ibbott, Michael Moyers, Ryan Grant, & David Followill

• Radiological Physics Center Ashley Hollan

2011

AAPM Posters:

• Analysis of Uncertainties for the RPC Remote Dosimetry Using Optically Stimulated Light Dosimetry (OSLD) J. Francisco Aguirre, Paola Alvarez, David S. Followill, Geoffrey S. Ibbott

• Analysis of results from an anthropomorphic stereotactic radiosurgery phantom Carrie F. Amador, Andrea Molineu, Susan A. Smith, Nadia Hernandez, David Followill and Marilyn Stovall

• Design, development, and evaluation of a modified, anthropomorphic, head and neck, quality assurance phantom for use in stereotactic radiosurgery Austin M. Faught, Stephen F. Kry, Dershan Luo, Andrea Molineu, Jim Galvin, Robert Drzymala, Robert Timmerman, Jason Sheehan, Michael T. Gillin, Geoffrey S. Ibbott, and David S. Followill

• Requirements for performing a retrospective patient chart review at the RPC for clinical trials Ashley Hollan, Jessica Lowenstein, Franklin Hall, Irene Harris, Joye Roll, and David Followill

• The effect of shoulder variation on IMRT and SmartArc for head and neck cancer EMILY NEUBAUER, LEI DONG, PH.D., DAVID FOLLOWILL, PH.D., ADAM S. GARDEN, M.D., LAURENCE COURT, PH.D., R. ALLEN WHITE, PH.D., AND STEPHEN F. KRY, PH.D.

• Development of an anthropomorphic head phantom for the assessment of proton therapy treatment procedures Paige Summers, David Followill, Narayan Sahoo, Falk Pönisch, Susan Tucker, Michael Gillin, Beverly Riley, & Geoffrey Ibbott

• Evaluation of the OSLD system for remote dosimetry audits implemented by the RPC P. Alvarez, J.F. Aguirre, D. Followill

• Proton Linearity and Energy Dependence of Optically Stimulated Luminescent Detectors for Remote Audits of Proton Beam Calibration by the Radiologial Physics Center Jongmin Cho, Paola Alvarez, Geoffrey Ibbott, Michael Gillin, and David Followill

• Evaluation of Lung Treatment Deliveries Using the Radiological Physics Center’s (RPC) Thorax Phantom: Monte Carlo vs. All Other Modern Heterogeneity Correction Algorithms. D. Followill, P. Alvarez, M. Gillin and G. Ibbott

• Cervix Brachytherapy Dosimetry: Inconsistencies in Defining Bladder and Rectal Points Jessica R. Lowenstein, Joye Roll, Irene Harris, Franklin Hall, Ashley Hollan and David Followill

• Clinical Impact of the Couch Top and Rails on IMRT and Arc Therapy Kiley Pulliam, Rebecca Howell PhD, David Followill PhD, Dershan Lou PhD, R. Allen White PhD, Stephen Kry, PhD

• Results from 1069 IMRT irradiations of an anthropomorphic head and neck phantom Andrea Molineu, Nadia Hernandez, Paola Alvarez, Geoffrey Ibbott, Jim Galvin and David Followill

2010

AAPM Presentations

• MO-A-BRA-1 Credentialing for Clinical Trials Geoffrey S. Ibbott, Ph.D.

• WE-D-204C-1 Opportunities and Considerations for Multi-institutional Clinical Trials Research Geoffrey S. Ibbott, Ph.D.

• SU-GG-T-476 Effect of Film Orientation On Proton Beam Dosimetry Ryan Grant, Geoffrey S. Ibbott, Beverly Riley, Narayan Sahoo, Susan Tucker, X. Ronald Zhu, David Followill

• SU-GG-T-552 Commissioning An Anthropomorphic Spine and Lung Phantom for Remote Quality Assurance of Spinal Radiosurgery Douglas Caruthers, M.S.; Geoffrey Ibbott, Ph.D.; David Followill, Ph.D.; Eric Chang, M.D.; Almon Shiu, Ph.D.; Allen White, Ph.D.

• Validation of the Commissioning of an OSLD System for Remote Dosimetry F. Aguirre, P. Alvarez, C. Amador, A. Tailor, D. Followill, G. Ibbott

• Initial Results from Multiple Irradiations of an Anthropomorphic Spine Phantom Andrea Molineu, Nadia Hernandez, Paola Alvarez, David Followill, Geoffrey Ibbott

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AAPM Posters:

• Volumetric Modulated Arc Therapy dose delivery evaluation using the Radiological Physics Center head and neck phantom K Kisling, D Yaldo, D Followill, S Kry, S Scarboro, S Frank, and R Howell

• A custom-developed method for accurate dose recalculation of patient plans entered into clinical trials S Davidson, S Kry, J Cui, J Deasy, G Ibbott, M Vicic, A White, D Followill

• Evaluation of the Sensitivity of the Anisotropic Analytical Algorithm (AAA) to the Commissioning Dataset D Yaldo, R Tailor, S Scarboro, N Sahoo, S Kry, K Kisling, D Followill, and R Howell

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Other Meetings:

• Safety in Radiation Therapy – A Call to Action Geoffrey Ibbott. Ph.D.

 

2009

AAPM Abstracts:

Sunday

• 3:00PM-4:30PM  SU-FF-T-302 Response of OneDoseTM and TLD100 Dosimeters Over 6MV to Pd-103 Equivalent Energies Z Yu, R Tailor, G Ibbott, N Wells, K Prado

• 3:00PM-4:30PM SU-FF-T-320 The Radiological Physics Center’s Annual TLD Machine Calibration Audit and Its Impact On Clinical Trials D Followill, J Lowenstein, L Palmer, G Ibbott

• 3:00PM-4:30PM  SU-FF-T-306 Optically Stimulated Light Dosimetry: Commissioning of An Optically Stimulated Luminescence (OSL) System for Remote Dosimetry Audits, the Radiological Physics Center Experience J Aguirre, P Alvarez, D Followill, G Ibbott, C Amador, A Tailor

• 3:00PM-4:30PM  SU-FF-T-25 Cervix Brachytherapy Dosimetry: Observed Improvement in Data Submitted to Clinical Trials J Lowenstein, J Roll, G Ibbott

• 3:00PM-4:30PM  SU-FF-T-263 Evaluation of a PAGAT Gel for Use in An Anthropomorphic Phantom M Heard, G Ibbott, D Followill, E Jackson, M Salehpour, A White

• 3:00PM-4:30PM  SU-FF-T-444 Validation and Benchmark of a Source Model for a Varian 6 MV Photon Beam Using Monte Carlo Calculations S Davidson, J Cui, S Kry, M Vicic, J Deasy, R White, G Ibbott, D Followill

• 3:00PM-4:30PM  SU-FF-T-370 Evaluation of An Anthropomorphic Pelvis Phantom for Proton Therapy R Grant, G Ibbott, N Sahoo, S Tucker, X Zhu, D Followill

• 3:00PM-4:30PM SU-FF-T-269 Comparison of Out-Of-Field Doses in Pediatric Patients From Craniospinal Irradiations Using Photon, Electron and Proton Spinal Fields G Georgiev, D Followill, G Ibbott, S Kry, J Fontenot, A White, A Mahajan

Monday

• 7:30AM-8:25AM  MO-A-BRC-1 Credentialing for Clinical Trials: The Role of the RPC (Abstract) (Presentation) G Ibbott

Tuesday

• 10:00AM-12:00PM  TU-C-BRB-9 Estimate of the Uncertainty in Relative Secondary Cancer Risk Calculations Following Proton Therapy and Intensity Modulated X-Ray Therapy J Fontenot, C Bloch, D Followill, U Titt, M Zhang, W Newhauser

• 10:00AM-12:00PM  TU-C-303A-1 Evaluating the Accuracy of Four-Dimensional Photon Dose Calculations with Phantom Measurements Y Vinogradskiy, P Balter, D Followill, P Alvarez, A White, G Starkschall

• 4:00PM-5:30PM TU-E-BRB-3 Performance-Based QA for Radiotherapy: TG-135 - QA for Robotic Radiosurgery S Dieterich, C Cavedon, C Chuang, A Cohen, J Garrett, C Lee, J Lowenstein, M D'Souza, D Taylor, X Wu, C Yu

Wednesday

• 10:00AM-12:00PM   WE-C-211A-1 Requirements and Opportunities for Maintenance of Certification G Ibbott, G Frey, R Morin, S Thomas

• 1:30PM-3:20PM   WE-D-BRB-1 Eye Plaque Dosimetry: Report of the AAPM Therapy Physics Committee Task Group No. 129 F Mourtada, S Chiu-Tsao, M Astrahan, P Finger, D Followill, A Meigooni, C Melhus, M Napolitano, R Thomson, M Rivard, M Parish, D Rogers, R Nath

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Posters:

• The Radiological Physics Center’s Annual TLD Machine Calibration Audit and Its Impact on Clinical Trials D. Followill, J. Lowenstein, L. Palmer, G. Ibbott

• Evaluation of An Anthropomorphic Pelvis Phantom for Proton Therapy Ryan Grant, Geoffrey S. Ibbott, Beverly Riley, Narayan Sahoo, Susan Tucker, X. Ronald Zhu, David Followill

• Evaluation of a PAGAT Gel for Use in an Anthropomorphic Phantom Malcolm Heard, Geoffrey Ibbott, David Followill, Edward Jackson, Mohammad Salehpour, Allen White

• Cervix Brachytherapy Dosimetry: Observed improvement in data submitted to clinical trials Jessica R. Lowenstein, Joye Roll and Geoffrey S. Ibbott

• Comparison of Out-Of-Field Doses in pediatric patients from Craniospinal Irradiations using photon, proton and electron spinal fields Georgi N. Georgiev, David S. Followill, Ph.D., Jonas D. Fontenot, Ph.D., Anita Mahajan, M.D., Stephen F. Kry Ph.D., Geoffrey S. Ibbott, PhD. R. Allen White, Ph.D., Beverly A. Riley, CMD

• Verification and Benchmark of a Source Model for a Varian 6 MV Photon Beam Using Monte Carlo Calculations S Davidson, J Cui , S Kry, M Vicic, J Deasy , A. White, G Ibbott , D Followill

• Commissioning of an Optically-Stimulated Luminescence (OSL) system for remote dosimetry audits J.F. Aguirre, P. Alvarez, C. Amador, A. Tailor, D. Followill, G. Ibbott

• Commissioning a new anthropomorphic spine and lung phantom for the remote validation of treatment plans for institutions participating in RTOG 0631 Douglas Caruthers, Dr. Geoffrey Ibbott, Dr. David Followill

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AAPM Summer School:

• QA for Clinical Dosimetry with Emphasis on Clinical Trials Geoffrey S. Ibbott, Ph.D.

• Clinical Implementation of the TG-51 Protocol David Followill, Ph.D.

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Other Meetings:

• Developing a QA Program in Support of Cooperative Group Clinical Trials Geoffrey Ibbott. Ph.D.

• RADIATION THERAPY DATA SUBMISSION Joye Roll, CMD; Jessica Lowenstein, MS; Geoffrey Ibbott. Ph.D.

 

2008

Presentations:

Sunday

• 4:00-6:00  SU-HH-AUD C-10 The Imaging and Dosimetric Capabilities of a Novel CT/MR-Suitable, Anatomically Adaptive, Shielded HDR/PDR Intracavitary Brachytherapy Applicator for the Treatment of Cervical Cancer M Price, P Eifel, K Gifford, M Zhang, D Followill, M Gillin, F Mourtada

Monday

• 7:30-8:25  MO-A-350-1 Out-Of-Field Dosimetry for Secondary Cancer Studies: Past Experience and Future Needs X G Xu, D Followill

Tuesday

• 8:30-9:25 TU-B-350-1 The RPC's Evaluation of Advanced Technology Radiation Therapy G Ibbott

• 10:00-12:00  TU-C-AUD B-3 A Comparison of Heterogeneity Correction Algorithms P Alvarez, A Molineu, N Hernandez, F Hall, D Followill, G Ibbott

• 10:00-12:00 TU-C-AUD B-8 Identification of a 3D Dosimeter Best-Suited for Use by the RPC M Heard, D Followill, R White, E Jackson, M Salehpour, G Ibbott

Wednesday

• 1:30-3:20   WE-D-350-1 MOC: The ABR Perspective G Frey, S Thomas, R Morin, G Ibbott, M Yester

Thursday

• 7:30-9:25  TH-SAM-AUD B-3 Requirements for Addressing Respiratory Motion in Cooperative Group Clinical Trials (SAM Session) G Ibbott

• 12:30-2:20  TH-D-352-5 Optically Stimulated Luminescence (OSL) Dosimeters Can Be Used for Remote Dosimetry Services J Homnick, G Ibbott, A Springer, J Aguirre

• 12:30-2:20  TH-D-AUD A-2 Measurement of Neutron Spectrum and Ambient Dose Equivalent Around a Mini-Phantom at a Proton Therapy Facility Z Wang, S Kry, E Burgett, R Howell, R Tailor, J Oliver, D Followill, A Smith, M Salehpour

• 12:30-2:20  TH-D-AUD A-7 Risk of Secondary Fatal Malignancies From Cyberknife Radiosurgery M Bellon, D Followill, G Ibbott, R White, M Salehpour, A Mahajan, S Kry, C Ding

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Posters:

• SU-GG-T-135 Evaluation of PRESAGE/optical-CT 3D Dosimetry for Commissioning a Linac for IMRT M Oldham, D Sterling, H Sakhalkar, A Molineu, J Adamovics, G Ibbott

• SU-GG-T-143 Comparisons of a Monte Carlo IMRT Plan Recalculation Results with the Pinnacle Treatment Planning System J Cui, S Davidson, V Willcut, I El Naqa, D Followill, J Deasy

• SU-GG-T-159 Has IMRT Delivery Improved in the Last 5 Years? A Molineu, J Lowenstein, N Hernandez, P Alvarez, D Followill, G Ibbott

• SU-GG-T-213 Quality Audits of the Calibration for TG-51 Non-Compliant Beams by the Radiological Physics Center D Followill, A Molineu, J Lowenstein, P Alvarez, J Aguirre, G Ibbott

• SU-GG-T-287 Deformable Lung Phantom for Verification of 4D Dose Calculations Y Vinogradskiy, G Starkschall, P Balter, D Followill

• SU-GG-T-308 Polymer Cross-Linking and Sensitivity Enhancement in Normoxic Polymer Gels Used for Three-Dimensional Dosimetry R Martin, J BenComo, M Heard, M Martin, K Kaluarachchi, N Wells, R Sadagopan

• SU-GG-T-345 Verification of a Monte Carlo-Based Source Model for a Varian 10 MV Photon Beam S Davidson, J Cui, J Deasy, G Ibbott, D Followill

• TU-FF-A4-2 Evaluation of the Performance of the Fast Scanning Platform of An OCT System M Heard, G Ibbott

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Other Meetings:

• Radiation Oncology Physics—Acceptance Testing and Quality Assurance of Treatment Planning Systems Jake Van Dyk and Geoffrey S. Ibbott

• Radiation Oncology Physics—Intensity-modulated Radiation Therapy: Patient Safety and Error Reduction Marcus Randall, Peter Dunscombe and Geoffrey S. Ibbott

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2007

Presentations:

• The Radiological Physics Center's QA Activities Geoffrey S. Ibbott

• A Comprehensive Study on the Heterogeneity Dose Calculation Accuracy in IMRT Using an Anthropomorphic Thorax Phantom S. Davidson, R. Popple, G. Ibbott, D. Followill

• A Comparison of Heterogeneity Correction Algorithms Within a Lung PTV P. Alvarez, A. Molineu, N. Hernandez, D. Followill, G. Ibbott

• Developing Medical Physics Technical Standards Through the AAPM and ANSI Geoffrey S. Ibbott

• Respiratory Motion in Cooperative Group Trials Geoffrey S. Ibbott, Paige Nitsch, Nadia Hernandez, Paola Alvarez

• Risk of Secondary Fatal Malignancies from Hi-Art Tomotherapy IMRT S. Lazar, D. Followill, J. Gibbons, A. Mahajan, M. Salehpour, M. Stovall, R. White

• A Comparison of DPM and VMC++ Monte Carlo Codes Applied to Heterogeneous Media J. Cui, S. Davidson, P. Lindsay, D. Followill, I. El Naqa, J. Deasy

• Characterisation, Commissioning and Evaluation of DELTA4 IMRT QA System. R. Sadagopan, J. BenComo, R.Martin, P. Balter, S. Vedam, G. Nilsson

• RPC's IMRT Phantoms Andrea Molineu

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Posters:

• Dosimetry in an IMRT Phantom Designed for a Remote Auditing Program. Y. Han, E. Shin, M. Yoon, S. Lee, S. Ju, C. Lim, S. Park, S. Kang, J. Lah, S. Cho, G. Ibbott, Y. Ahn

• A Monte Carlo Study of the Out-Of-Field Dose from IMRT S.Kry, M. Salehpour, U. Titt, M. Stovall, R. White, D. Followill

• Linear Energy Transfer (LET) Dependence of Bang® Polymer Gel Dosimeters in Proton Beams W. Bivens, G. Ibbott, M. Maryanski, M. Heard, D. Followill, X. Zhu

• Neutron Dose Equivalent at Depth in a Phantom S. Kry, D. Followill, M. Salehpour

• Benchmarking a Flexible Monte Carlo (MC) Tool Based on the Dose Planning Method (DPM) for Use in Evaluating IMRT Treatment Planning Systems S. Davidson, J. Cui, D. Followill, G. Ibbott, J. Deasy

• An Open-Source Software Tool to Support Film-Based IMRT Quality Assurance D. Khullar, A. Molineu, D. Followill, W. Bosch, V. Willcut, T. Simpson, T. Ju, J. Deasy

• Development of a Modified 3D Radiochromic Dosimeter for Clinical Proton Beams M. Heard, J. Adamovics, G. Ibbott

• Dosimetric Characterization of Model CS-1 131Cs Source by Thermoluminescense Dosimetry in Liquid Water. R. Tailor, G. Ibbott, S. Lampe, W. Bivens, N. Tolani

• Design of a Jig for Thermoluminescense Dosimetry of Brachytherapy Sources in Liquid Water and the Determination of a Correction Factor for Water-Equivalent Plastics R. Tailor, G. Ibbott, N. Tolani

• A Method for Extracting the Relevant MRI Information from Normoxic Polymer Gels Exposed to Low Doses. R. Martin, J. BenComo, M. Martin, J. Bankson, M. Heard, K. Kaluarachchi, D. Webb, N. Wells, G. Ibbott

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Others:

• Challenges in Credentialing Institutions and Participants in Advanced Technology Clinical Trials Geoffrey S. Ibbott

• Evaluation of Lung Heterogeneity Corrections for Clinical Trials Using the RPC Lung Phantom David S. Followill

• Errors in Radiation Oncology Geoffrey S. Ibbott

• The Radiological Physics Center's Experience with IMRT Geoffrey S. Ibbott

• Brachytherapy in group trials Geoffrey S. Ibbott

• Toxicity and Cosmesis from RTOG 95-17: A Phase I/II Trial to Evaluate Brachytherapy as the Sole Method of Radiation Therapy for Stage I and II Breast Carcinoma Rachel Rabinovitch, Kathryn Winter, Marie Taylor, Robert Kuske, John Bolton, Doug Arthur, Julia White, William Hanson, Ray Wilenzick, and Beryl McCormick

• Minicourse: Radiation Oncology Physics - Intensity-Modulated Radiation Therapy: Patient Safety and Error Reduction (Course RC222). Part 2 Geoffrey S. Ibbott

• Minicourse: Radiation Oncology Physics - Intensity-Modulated Radiation Therapy: Patient Safety and Error Reduction (Course RC222). Part 3 Peter Dunscombe

• Minicourse: Radiation Oncology Physics - Acceptance Testing and QA of Treatment Planning Systems (Course RC422) J. Van Dyk and G. Ibbott.

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2006

•      The Radiological Physics Center's Experience with IMRT
Geoffrey S. Ibbott

•      Brachytherapy In cooperative Group Clinical Trials
Geoffrey S. Ibbott and RPC Staff

•      The State of Radiotherapy Physics Through the Eyes of a Quality Auditor
David Followill

•      Adequacy of IMRT QA Procedures as Determined by Irradiations of a Head and Neck IMRT Anthropomorphic Phantom
Andrea Molineu, Paola Alvarez, Nadia Hernandez, David S. Followill, Geoffrey S. Ibbott

•      The Credentialing Process for the NSABP B-39 / RTOG 0413 Partial Breast Irradiation Trial
Jessica R. Lowenstein, Cynthia Davis, Joye Roll, Irene Harris, Franklin Hall, David S. Followill, and Geoffrey S. Ibbott

•      The Value of Credentialing
Jessica R. Lowenstein, Joye Roll, David S. Followill, and Geoffrey S. Ibbott

•        Characterization of EBT versus MD55 Gafchromic ®films for relative dosimetry measurements
Paola Alvarez, Nadia Hernandez, David Followill, Ramesh Tailor and Geoffrey Ibbott

•        Dose calculation accuracy in the presence of high-z materials using megavoltage CT for treatment planning.
Hecox R, Gibbons J, Followill D, Ibbott G.

•        Evaluation of heterogeneity correction algorithms through the irradiation of a lung phantom
P. Alvarez, A. Molineu, N. Hernandez, D. Followill, G. Ibbott

•      IMRT Heterogeneity dose calculation algorithm accuracy using anthropomorphic thorax phantom
S. Davidson, K. Prado, G. Ibbott, D. Followill

•      A Physicist's Guide to the International Electrotechnical Commission
Geoffrey S. Ibbott, Ph.D. Chair, Subcommittee 62C Member, WG-1 Chair, US TAG to WG-1

•      Quality Assurance and New Technologies in Radiation Medicine (QANTRM)
Geoffrey S. Ibbott, David S. Followill, Andrea Molineu, Paola Alvarez, Nadia Hernandez.

2005

•         Evaluation Of Doses Delivered By SBRT To The Lung Of An Anthropomorphic Thorax Phantom
Paola Alvarez, Andrea Molineu, Nadia Hernandez, David S. Followill, and Geoffrey S. Ibbott

•         Analysis of Errors Made During 163 IMRT Irradiations of an Anthropomorphic Phantom

Andrea Molineu, Paola Alvarez, Nadia Hernandez, David S. Followill, Geoffrey S. Ibbott

•         Reference Electron Beam Dosimetry Data Set: A Preliminary Analysis

José A. Bencomo, Rita Weathers, Marilyn Stovall, and Geoffrey S. Ibbott

•         Verification Of Dose Point Kernels For ¹⁹²Ir Brachytherapy

José A. Bencomo, Daniel J. Macey, and Ann Lawyer

•         Heterogeneity Dose Calculation Algorithm Accuracy In IMRT Using Anthropomorphic Thorax Phantom

S. Davidson, D. Followill, K. Prado, G. Ibbott

•         Common Dosimetry Errors in Cervix Patients treated with Brachytherapy on Clinical Trials

Jessica R. Lowenstein, Joye Roll and Geoffrey S. Ibbott

•         Credentialing Requirements for NSABP B-39 / RTOG 0413

Jessica R. Lowenstein, Joye Roll, Cynthia Davis, Paul Holguin, Huy Duong, David S. Followill, and Geoffrey S. Ibbott

•         IMRT Head and Neck Phantom Irradiations: Correlation of Results with Institution Size

Andrea Molineu, Nadia Hernandez, Paola Alvarez, David S. Followill, and Geoffrey S. Ibbott

•         The Radiological Physics Center’s Anthropomorphic Quality Assurance Phantom Family:New Developments

David S. Followill, and Geoffrey S. Ibbott

•         The Radiological Physics Center A QA Resource in Radiation Therapy

Geoffrey S. Ibbott

•         Development of an Independent Audit Device for Remote Verification of 4D Radiotherapy

Jason Shoales, David S. Followill, and Geoffrey S. Ibbott

•         Clinical Reference Dosimetry of a “Hi-Art II Helical Tomotherapy Machine

David S. Followill, Andrea Molineu, John McGary, and Geoffrey S. Ibbott

•         Evaluation of the TomoTherapy Planning Station Heterogeneity Correction Algorithm Using an Anthropomorphic Phantom

David S. Followill, Andrea Molineu, John McGary, and Geoffrey S. Ibbott

•         Monte Carlo Assisted Study of the microSelectron ¹⁹²Ir Brachytherapy Source

Hilary Vass, Firas Mourtada, John Horton, Sang Cho, Anuja Jhingran, R. Allen White, and Geoffrey S. Ibbott

 

2004

•         Evaluation of IMRT for Institutions Participating in NCI Sponsored Clinical Trials
Andrea Molineu, Paola Alvarez, Nadia Hernandez, David S. Followill, and Geoffrey S. Ibbott

•         Anthropomorphic Phantoms for Quality Assurance in Radiation Therapy
P. Alvarez, A. Molineu, N. Hernandez, D.S. Followill, P. Balter, W.F. Hanson and G.S. Ibbott

•         Use of MOSFET detectors in an anthropomorphic breast phantom to verify dose and dose distribution  

Jose A. BenComo, Sang H. Cho, Tzouh-Liang Sun, Seungsoo Lee and Geoffrey S. Ibbott

•         Gel Dosimetry Technique for Measurements in High Dose Gradients
Malcolm P. Heard and Geoffrey S. Ibbott

•         On the Choice of Measured Depth Dose Data for the Monte Carlo
Modeling of the 18 MV Photon Beam: Shifted vs. Unshifted
Sang Hyun Cho, Oleg Vassiliev, Helen Liu, Geoffrey S. Ibbott, and Radhe Mohan

•         High-Energy Photon Standard Dosimetry Data: A Quality Assurance Tool
David Followill, Ph.D., Jessica Lowenstein, M.S., Geoffrey Ibbott, Ph.D.

•         The Accuracy of 3-D Inhomogeneity Photon Algorithms in Commercial Treatment Planning Systems using a Heterogeneous Lung Phantom
Gary Fisher, B.S., David Followill, Ph.D., Geoffrey Ibbott, Ph.D.

•         Energy dependence of a TLD-100 system for characterizing low energy brachytherapy sources
J. Esteban, R.C. Tailor, S. Cho and G. S. Ibbott

•         Evaluation of 94 IMRT irradiations of an anthropomorphic H&N phantom
Andrea Molineu, Paola Alvarez, Nadia Hernandez, David S. Followill and Geoffrey S. Ibbott

                   

2003

•         Characterizing Dose Distributions of Brachytherapy Sources Using Normoxic Gel.
M.P. Heard, D.S. Followill and G.S. Ibbott

•         Magic Gel for Head and Neck IMRT
M. Beach, G. Ibbott, D. Followill, W. Hanson, C. Bloch, E. Jackson, S. Tucker

•         TLD measurements in liquid water of dosimetry characteristics of a new 125I seed.
R. C. Tailor, J. Esteban and G.S. Ibbott

•         Quality-Assurance Check of Collimator and Phantom-Scatter Factors.
Ramesh C. Tailor, David S. Followill, Nadia Hernandez, Timothy S. Zhu and Geoffrey S. Ibbott

•         Are photon and electron beam calibrations more consistent with TG-51 than with TG-21?
Ramesh C. Tailor, William F. Hanson, Nathan Wells and Geoffrey S. Ibbott

•         To Plan or not to Plan: Multiple High Dose Rate (HDR) Brachytherapy Insertions.
Lowenstein, J.R., Roll, J., and Ibbott, G. S.

•         Evaluation of dosimetry parameters of photons and electron beams using a linear ionization chamber array.
Jose A. Bencomo, Geoffrey Ibbott, Seungsoo Lee and Joao A. Borges

•         A Gel Lung-Equivalent Material for 3D Dosimetry.
Jose A. Borges, M.S., Jose A. Bencomo, Ph.D., Geoffrey S. Ibbott, Ph.D. and Jingfei Ma, Ph.D.

•         Energy dependence of a TLD system for characterizing low energy brachytherapy sources.
J. Esteban, G.S. Ibbott, W. Hanson, J. Horton and S.Cho

                   

2002

•         Implementation of a Polymer Gel Dosimetry Insert for an Anthropomorphic Head Phantom Used to Evaluate Head and Neck Intensity-Modulated Radiation Therapy
Michael L. Beach, Geoffrey S. Ibbott and Marek Maryanski

•         Reference Photon Dosimetry Data for the Siemens Primus Linear Accelerator:  Preliminary Results for Depth Dose and Output Factor
Sang Hyun Cho and Geoffrey S. Ibbott

•         Verification of Plaque Simulator Dose Distributions Using Radiochromic Film
Amanda Krintz, William F. Hanson, Geoffrey S. Ibbott and David S. Followill

•         Quality Assurance of Linear Accelerators Using Arrays of MOSFET Dosimeters:  A Feasibility Study
Jose A. Bencomo, and Geoffrey S. Ibbott

•         Experience with an IMRT Head and Neck QA Phantom
Andrea Nelson, Peter Balter, William F. Hanson, Geoffrey S. Ibbott

•         Radiotherapy Quality Assurance of Gynecologic Oncology Group (GOG) Protocol 165, A Cooperative Group Study of Carcinoma of the Cervix Lowenstein
J.R., Roll, J., Hanson, H.W., Davis, D.S., Lanciano R., Calkins, A., Petereit, D., Varia, M., Ibbott, G.S.

                   

2001

•         A Reanalysis of the Collaborative Ocular Melanoma Study Medium Tumor Trial Eye Plaque Dosimetry
Amanda Krintz, David S. Followill, Michelle Melia and Willaim F. Hanson

•         Electron Calibrations:  Parallel Plate Chambers vs. Cylindrical Chambers
Peter Balter, J.R. Lowenstein and William F. Hanson

•         Problems and Shortcomings of the RPC Remote Monitoring Program of Institutions Dosimetry Data
J.A. Bencomo, N. Hernandez and William F. Hanson

•         Standard Wedge and Tray Transmission Values for Varian, Seimens, Elekta/Philips Accelerators;  A Quality Assurance Tool
David S. Followill, Nadia Hernandez and William F. Hanson

•         Dose Specification and Quality Assurance of RTOG Protocol 95-17, A Cooperative Group Study of 192 IR Breast Implants as Sole Therapy
W.F. Hanson, B. Martin, R. Kuske, D. Arthur, R. Rabinovitch, J. White, R. Wilenzick, I. Harris, R.C. Tailor, D.S. Davis   Poster and Slides

•         Calculated TG51 to TG21 Absorbed-Dose Ratios For Most Widely Used Cylindrical and Parallel-Plate Ion Chambers Over a Range of Photon and Electron Energies
R.C. Tailor and W.F. Hanson

•         Design of an Anthropomorphic Intensity Modulated Radiation Therapy Quality Assurance Phantom
Dee-Ann Radford, David S. Followill and William F. Hanson

         

2000

•         Comparison of On-Site and Off-Site Evalutations of Dosimetry Data
J.A. Bencomo, D.S. Followill, S.H. Cho, P.Balter, R.C. Tailor, J.R. Lowenstein, N. Hernandez, and W.F. Hanson;

•         Standard Electron Cone Ratio Values for Varian, Siemens and Elekta (Philips) Accelerators
David S. Followill, Ramesh C. Tailor, Nadia Hernandez and William F. Hanso

•         Implementation of TG-51: Practical Considerations
J.R. Lowenstein, P. Balter, D.S. Followill and W.F. Hanson;

•         Design of a Heterogeneous Thorax Phantom for Remote Verification of Three-Dimensional Conformal Radiotherapy
Christopher P. Cherry, David S. Followill, William F. Hanson;

•         Design of an Anthropomorphic Intensity Modulated Radiation Therapy Quality Assurance Phantom
Dee-Ann Radford, David S. Followill, Peter A. Balter, William F. Hanson;

•         Practical Considerations for the Calibration of Low Energy/Low Activity Seeds
Peter A. Balter, J. Francisco Aguirre, and William F. Hanson;

•         **Protocol Pre-Approval Processes for Radiotherapy Treatment on Clinical Trials; The RPC Experience.
Denise S. Davis, David S. Followill, Ramesh C. Tailor, Jessica R. Lowenstein, I. Harris, Joye Roll, and William F. Hanson (Oral Presentation)

** Poster not currently available.

 

1999

•         RPC Experience with TLD for Output and Energy Monitoring of Radiation Therapy Beams
Ramesh C. Tailor, J. Francisco Aguirre, and William F. Hanson

•         Analysis of Radiological Physics Center Remote Tools Program Data
Jose A. Bencomo, Jessica R. Lowenstein, Denise S. Davis, Cynthia M. Davis, and William F. Hanson  

•         An Anthropomorphic Head Phantom for Remote Monitoring of Stereotactic Radiosurgery at Multiple Institutions
Peter Balter, Marilyn Stovall, Cathy Kasper, Susan Smith, and William F. Hanson  

•         Comparison between TG-51 and TG-21: The results of TG-51 beta testing
Jessica R. Lowenstein, Sang H. Cho, Peter A. Balter, and William F. Hanson