公开(公告)号：KR1020130118509A

公开(公告)日：2013-10-30

申请号：KR1020120041431

申请日：2012-04-20

Applicant: 한국과학기술원

Inventor： 조승룡 ,  이태원 ,  정혜균

IPC: A61B6/03

CPC classification number: A61B6/032 ,  A61B6/025 ,  A61B6/107 ,  A61B6/52 ,  G06T2207/10081

Abstract: PURPOSE: An X-ray tomography system and a method thereof are provided to effectively achieve sparse view imaging without converting power of an X-ray tube by using a multi-slit collimator. CONSTITUTION: An X-ray generation source (100) irradiates an object (10) with an X-ray. A collimator (200) is arranged between the X-ray generation source and the object. The collimator cuts off a part of the X-ray which is radiated from the X-ray generation source. The collimator vibrates according to a fixed cycle. An X-ray detector (300) detects the penetration image of the X-ray which passes through the collimator. A control device uses a compression sensing based repetitive algorithm to rebuild the penetration image of the X-ray.

Abstract translation: 目的：提供X射线断层摄影系统及其方法，以有效地实现稀疏视图成像，而不需要通过使用多狭缝准直器来转换X射线管的功率。 构成：X射线产生源（100）用X射线照射物体（10）。 在X射线产生源和物体之间设置准直器（200）。 准直器切断从X射线发生源辐射的X射线的一部分。 准直器根据固定的周期振动。 X射线检测器（300）检测通过准直仪的X射线的穿透图像。 控制装置使用基于压缩感测的重复算法来重建X射线的穿透图像。

公开(公告)号：KR101999678B1

公开(公告)日：2019-10-01

申请号：KR1020120041431

申请日：2012-04-20

Applicant: 한국과학기술원

Inventor： 조승룡 ,  이태원 ,  정혜균

IPC: A61B6/03 ,  A61B6/02 ,  A61B6/10 ,  A61B6/00

公开(公告)号：KR101479227B1

公开(公告)日：2015-01-05

申请号：KR1020120099226

申请日：2012-09-07

Applicant: 한국과학기술원

Inventor： 조승룡 ,  정혜균 ,  정원균

IPC: A61B6/08

Abstract: 본 발명은 실시간 투시영상(Real-time fluoroscopy) 촬영시 인체에 피폭되는 방사선량을 줄일 수 있는 투시영상장치에 관한 것으로, 본 발명에 따르면, 콜리메이터를 X선원과 투사체 사이에 두어 관심 외 영역에 조사되는 방사선량을 경감시키는 구조를 가지고, 콜리메이터가 관심 영역의 움직임을 서로 수직한 세 축(X, Y, Z)의 방향으로 자유로이 실시간으로 추적하여 따라 움직이도록 구성되며, 콜리메이터의 움직임에 의해 투시영상으로 얻어지는 이미지 내의 관심영역의 크기를 조절할 수 있도록 구성된 것을 특징으로 하는 관심영역 필터를 장착한 투시영상장치가 제공됨으로써, 투시영상 촬영시 인체에 피폭되는 방사선량을 줄일 수 있는 동시에, 피폭선량 감소에 따른 영상의 화질 저하를 최소화할 수 있다.

公开(公告)号：KR1020140032663A

公开(公告)日：2014-03-17

申请号：KR1020120099226

申请日：2012-09-07

Applicant: 한국과학기술원

Inventor： 조승룡 ,  정혜균 ,  정원균

IPC: A61B6/08

Abstract: The present invention relates to a fluoroscopy system that may decrease radiation dose exposed to a human body when capturing real-time fluoroscopy, and according to the present invention, the fluoroscopy system is equipped with a region of interest filter that has a structure that decreases radiation dose irradiated to out-of-region by placing a collimator between an X-ray source and a subject, is configured so that the collimator tracks the movement of the region of interest in real time freely in the X, Y and Z directions perpendicular to one another and moves according to the movement, and is configured to adjust the size of a region of interest in an image obtained from fluoroscopy by the movement of the collimator, so it is possible to decrease radiation dose exposed to a human body when capturing fluoroscopy and at the same time, it is possible to minimize a decrease in image quality caused by a decrease in exposure dose.

Abstract translation: 荧光透视系统本发明涉及一种荧光透视系统，其可以在捕获实时荧光透视时减少暴露于人体的辐射剂量，并且根据本发明，荧光透视系统配备有具有降低辐射的结构的感兴趣的过滤器 通过将准直器放置在X射线源和被摄体之间而被照射到区域外的剂量被配置为使得准直器在垂直于X射线源和X射线源的X，Y和Z方向上实时跟踪感兴趣区域的移动 并且被配置为通过准直仪的移动来调整从透视图获得的图像中的感兴趣区域的尺寸，从而可以减少在拍摄荧光透视时暴露于人体的辐射剂量 并且同时可以最小化由曝光剂量的降低引起的图像质量的降低。