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 NRG. 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. Institutions that were previously credentialed to participate in another protocol will be notified if any additional credentialing steps are required.

In order to complete the IMRT credentialing process the following items must be completed:

• Complete or update the Facility Questionnaire.

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

Note: Institutions that are credentialed to participate in other IMRT protocols requiring an IMRT H&N phantom irradiation need not repeat the phantom irradiation for credentialing for this protocol.