This study requires credentialing. The credentialing requirements are different depending on whether you are using a 3DCRT or IMRT technique. You can be credentialed for either 3DCRT or IMRT or both depending on your physician’s preference.

In order to complete the 3D credentialing process, an institution must:

• Complete or update the Facility Questionnaire.

In order to complete the IMRT credentialing process, an institution must:

• 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 have previously completed the IMRT Benchmark or the IMRT H&N phantom may not need to repeat the phantom irradiation for credentialing for this protocol. Institutions that are credentialed to participate in other IMRT protocols should fill in the Credentialing Status Inquiry Form.