title: Patient movements during radiotherapy.
abstract: A system using closed-circuit television has been developed to enable the measurement of patient movements to an accuracy of 1 mm during external beam radiotherapy. The circuitry is under the control of a microcomputer, which records the movement data on magnetic tape for later analysis. The results indicate that patients mostly remain within 1 mm of their original set-up position on the treatment couch.
mesh_terms: D003201:Computers; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement; D011878:Radiotherapy; D011879:Radiotherapy Dosage; D013690:Television / Q000379:methods