This trial will utilize TRIAD for dosimetry digital treatment data submission. TRIAD is the American College of Radiology’s (ACR) image exchange application and it is used by the RTOG. See here for information on installing TRIAD.

Please fill out the credentialing status inquiry form to let us know that you would like to be credentialed for this protocol.

This trial allows the use of the following modalities: 3D-CRT and/or IMRT.

IIn order to complete the credentialing process, the following items must be completed per modality:

• Complete or update the Facility Questionnaire.

• Irradiate the IROC Houston's H&N phantom. Please fill in the request form online.

• Successfully complete the IGRT credentialing requirements. Please also complete the IGRT questionnaire. Note: IGRT credentialing is ONLY required for reduced margins.