公开(公告)号：KR1020140018467A

公开(公告)日：2014-02-13

申请号：KR1020120083109

申请日：2012-07-30

Applicant: 한국과학기술원

Inventor： 조승룡 ,  이윤정 ,  이태원 ,  이지석 ,  박미란

IPC: A61B6/03 ,  A61B6/08

Abstract: The present invention relates to a helical computed tomography system and a method. According to the present invention, provided are a multiple fan-beam helical computed tomography system and a computed tomography method using the same. X-ray sources face each other and locate around an object. An X-ray detector rotates around the object in order to scan the object. An X-ray beam passes through a collimator having a beam blocking slit which is vertical to a rotation shaft in order to obtain a projection image. The projection image obtained by using a compress-sensing based repetition type algorithm is reconstructed. The multiple fan-beam helical computed tomography system and the computed tomography method using the same can reduce the amount of exposed radiation for patients and medical teams caused during CT scanning compared with an existing CT apparatus.

Abstract translation: 螺旋计算机断层摄影系统和方法技术领域本发明涉及一种螺旋计算机断层摄影系统及方法。 根据本发明，提供了多扇叶光束螺旋计算机断层摄影系统和使用其的计算机断层摄影方法。 X射线源彼此面对并围绕物体定位。 X射线检测器围绕物体旋转以扫描物体。 X射线束通过具有垂直于旋转轴的光束阻挡狭缝的准直仪，以获得投影图像。 通过使用基于压缩感测的重复类型算法获得的投影图像被重建。 与现有CT装置相比，多扇叶光束螺旋计算机断层摄影系统和使用其的计算机断层摄影方法可以减少CT扫描期间患者和医疗队的暴露辐射量。

公开(公告)号：KR102205353B1

公开(公告)日：2021-01-20

申请号：KR1020130114450

申请日：2013-09-26

Applicant: 삼성전자주식회사 ,  한국과학기술원

Inventor： 최지영 ,  이종하 ,  성영훈 ,  이윤정 ,  조승룡

IPC: A61B6/00 ,  G06T5/50

Abstract: 심장과같이움직이는대상체에대한 4차원영상의품질을향상시킬수 있으며, 환자나의료진이받는방사선피폭량을감소시킬수 있는엑스선촬영장치및 그제어방법이개시된다. 엑스선촬영장치의일 실시예는움직이는대상체로엑스선을조사하는엑스선발생부; 상기대상체를투과한엑스선을검출하여전기적신호로변환하는엑스선검출부; 상기엑스선발생부및 상기엑스선검출부가마주보도록설치되며, 보어를중심으로회전하는갠트리; 상기대상체의생체신호주기마다상기갠트리를회전시키되, 상기생체신호주기가시작될때마다상기갠트리가서로다른시작위치에서부터회전되도록제어하는제어부; 및상기변환된전기적신호로부터획득된복수의 2차원투영영상에기존영상에기반한압축센싱영상복원알고리즘을적용하여, 상기대상체에대한 4차원영상을생성하는영상처리부를포함한다.