KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION;고려대학교 산학협력단
发明人:
LEE, Hak-Jae,이학재,LEE, Ki-Sung,이기성,CHA, Hye-mi,차헤미
申请号：
KRKR2017/002426
公开号：
WO2017/183809A1
申请日:
2017.03.07
申请国别(地区):
KR
年份:
2017
代理人:
摘要：
The present invention relates to a variable pinhole collimator and a radiographic imaging device using same. The variable pinhole collimator according to the present invention comprises: a plurality of pinhole plates in each of which a plurality of pinhole formation holes having mutually different sizes are formed at the same radius from a rotational axis and along a circumferential direction and a plurality of rotation operation holes are formed around the rotational axis and along the circumferential direction, and which are stacked in a direction in which radiation is incident； and a driving module, drawn into the plurality of rotation operation holes in the plurality of pinhole plates sequentially in the incident direction, for rotating the plurality of pinhole plates about the rotational axis, wherein the plurality of pinhole plates are rotated such that a selected one after another of the plurality of pinhole formation holes formed in each of the pinhole plates is placed in an overlapping area, thereby forming a pinhole in the overlapping area. Accordingly, various pinhole shapes can be achieved since it is possible to change a pinhole-configuring parameter, such as a view angle or hole diameter, of a pinhole collimator applied to a radiographic imaging device, such as a gamma camera or a single photon emission computed tomography device, and a reduced thickness can also be achieved.La présente invention concerne un collimateur sténopé variable et un dispositif d'imagerie radiographique utilisant celui-ci. Ledit collimateur sténopé variable selon la présente invention comprend : une pluralité de plaques sténopées dans chacune desquelles sont formés une pluralité de trous de formation de trous d'épingle ayant des tailles différentes les unes par rapport aux autres au même rayon par rapport à un axe de rotation et le long d'une direction circonférentielle et une pluralité de trous de fonctionnement en rotation autour de l'axe de rotation et le long de la directi
