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

Institutions who wish to credential for this protocol or have a question about your status for this protocol, Please fill out the Credentialing Status Inquiry Form.

3DCRT, IMRT, or proton therapy are allowed on this protocol. Credentialing is required for IMRT or proton therapy.

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

• All participants are asked to complete the IMRT Facility Questionnaire .

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

Note: Institutions that have prior IMRT credentialing may not need to re-irradiate the H&N phantom.

In order to complete the Proton Therapy process, the following items must be completed:

• All participants must have completed baseline approval for proton therapy.

• All participants are asked to complete the Proton Facility Questionnaire.

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