X-RAY COLLIMATOR, X-RAY COLLIMATION SYSTEM, AND MOVABLE CT SCANNER

摘要

An X-ray collimator, an X-ray collimation system, and a movable CT scanner. The X-ray collimator (4) comprises a square body (1). A square gap (2) is formed on the square body (1) in the length direction of the square body (1). The X-ray collimation system comprises an X-ray source (3). The collimator (4) is disposed on an X-ray emergent light path of the X-ray source (3). The movable CT scanner comprises the X-ray collimation system. The X-ray collimator limits, in an absorption manner, an X-ray beam emitted by an X-ray tube within a range where a detector (5) can receive, thereby providing excellent performance and preventing a detected human body from absorbing additional radiation dose. A rear collimator (6) is placed in front of the detector (5) and absorbs scattered X photons, thereby improving the signal-to-noise ratio of a signal acquired by the detector.