internal checking systems / high-energy x-rays / medical imaging / heavy metal target / high energy x-rays / /
MedicalCondition
tumor / cancer / patient's tumor / /
MedicalTreatment
radiation treatments / Radiation / /
Organization
American College of Radiology / /
Position
physician / therapist / radiation physicist / radiation therapist / head / radiation dosimetrist and physicist / medical radiation physicist and the dosimetrist / /