Radiotherapy: High Dosage Treatment

nuclear medicine, radiation therapy;doctor performing an in-office biopsy on a patient under local anesthesia, patient's condition is diagnosed as carcinoma of the tongue and prescribes x-ray treatments, x-ray technician figures dosage, discussion of electric voltage and amperage and how it relates to x-rays, diagrams of the penetration of x-rays into the body, animation of the destruction of cancer cells by x-rays;use of radon's seeds: these are tiny hollow metal capsules that contain radon gas. the seeds are implanted in the body inside a tumor. a nurse handles them behind a small lead shield;discussion between patient and nurse.