| 摘要 |
<p>A gantry (2) adapted to at least partially surround a subject (17) and having at least one degree of freedom, an X-ray emitter (12) mounted upon the gantry capable of angular movement and/or forward and reverse movement, an X-ray receiver (13) mounted on the gantry essentially opposite the X-ray emitter, wherein the X-ray emitter and X-ray receiver are adapted to traverse about the subject as the X-ray emitter emits X-rays toward the X-ray receiver through the subject and wherein the X-ray receiver comprises a film contained in a carrier, means in or on the carrier to enable the film to be moved in at least a forward or reverse direction, means (16) to enable the film carrier to be moved in at least a clockwise or anti-clockwise direction and/or forward and reverse directions in relation to the X-ray emitter, and an adjustable collimator slot in front of the X-ray emitter.</p> |
