A professional who provides radiation therapy to patients as prescribed by radiologist , according to established practices and standards. Responsibilities include:

• Reviews prescription, diagnosis, patient chart, and identification.
• Acts as liaison with physicist and supportive care personnel.
• Prepares equipment, such as immobilization, treatment, and protection devices, and positions patient according to prescription.
• Enters data into computer and sets controls to operate and adjust equipment and regulate dosage.
• Observes and reassures patient during treatment and reports unusual reactions to physician.
• Photographs treated area of patient and processes film.
• Maintains records, reports, and files as required.
• Follows principles of radiation protection for patient, self, and others.
• May assist in dosimetry procedures and tumor localization.
• May train therapy students.