DESIGN OF A PC CONTROLLED TEST DEVICE FOR THE STUDY OF PATIENT MOTIONIN X-RAY RADIOLOGY - FIRST APPLICATIONS AND RESULTS

Simulation and study of patient motion should be undertaken for differ ent imaging techniques since all new radiological techniques or equipm ent must pass through evaluation processes to verify their functional capability and assess their performance compared with other equipment. A device to study the effects of motion on X-ray image quality was de signed and built. The main goal of the PC controlled device developed by our group is to allow the adaptation of different phantoms and test objects. Preliminary experiments for the evaluation of different thor ax screen-film systems were carried out by simulating respiratory moti on. It is concluded that moving objects should be included for the com parison of screen-film systems since predictions based only on finding s in stationary test conditions could lead to false conclusions.