Development of a stereoscopic imaging system using fluorescent x-rays excited by synchrotron radiation

利用同步辐射激发的荧光 X 射线开发立体成像系统

• 批准号: 10357009
• 负责人: TOYOFUKU Fukai
• 金额: $ 16.9万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10357009/
• 关键词: synchrotron radiation; fluorescent x-ray; double-focus; stereo imaging; 2集点撮影; K吸収端差分

The purpose of this study is to develop a double-focus fluorescent x-ray source excited by synchrotron radiation for stereoscopic imaging, aiming at real time visualization of three-dimensional structure of blood vessels..(1) Development of a double-focus fluorescent x-ray sourceThe fluorescent x-rays were produced by exciting the metal targets by incident white x-ray from 6.5 GeV AR ring at Tsukuba. The intensities of fluorescent x-rays depend on several conditions such as incident x-ray spectrum, target metal, target angle, target thickness extraction angle and so forth. In order to obtain the optimum parameters, the computer calculations were performed. We developed the double-focus fluorescent x-ray source which is composed of two target boxes with rotating targets. They are placed with a distance of 5 to 30 cm apart along the beam line.(2) Development of the stereoscopic imaging systemWe developed data taking and video image processing system for stereoscopic imaging. Video signal … More s from the two image intensifier - TV camera systems are recorded on two digital video recorders. The video images are imported on a personal computer (Macintosh G4) and several pre-processing are performed frame by frame. Finally, stereoscopic video images are viewed using cross-eye method.(3) Stereoscopic imaging experimentsFluorescent x-rays, which range from about 30 keV to 75 keV can be generated by changing the target materials. In case of iodine contrast medium, fluorescent x-rays from Ba and Ce, having 32.2 and 34.7 keV K x-ray energies respectively, can be used for K-edge subtraction of iodine which has K absorption edge of 33.2 keV.In case of gadolinium, fluorescent x-rays from Ho and Yb, having 47.5 and 52.4 keV K x-ray energies respectively, can be used for gadolinium K-edge of 50.2 keV.Stereoscopic fluoroscopy has been performed by using phantoms which contain three different kind of contrast media (iodine, barium, and gadolinium).Stereoscopic fluoroscopy has been performed by using phantoms which contain three different kind of contrast media (iodine, barium, and gadolinium). Less

本研究的目的是研制一种用于立体成像的同步辐射激发的双聚焦荧光X射线源，旨在实时显示血管的三维结构。(1)双聚焦荧光X射线源的研制利用来自筑波6.5GeV AR环的入射白X射线激励金属靶产生荧光X射线。荧光X射线的强度取决于入射X射线谱、靶金属、靶角度、靶厚度提取角等多种条件。为了得到最佳参数，进行了计算机计算。我们研制了由两个靶盒组成的双聚焦荧光X射线源。(2)立体成像系统的研制我们研制了用于立体成像的数据采集和视频图像处理系统。视频信号…更多来自两个图像增强器-电视摄像系统的S被记录在两个数字录像机上。视频图像在个人计算机(Macintosh G4)上导入，并逐帧执行几个预处理。立体成像实验通过改变靶材，可以产生约30keV到75keV的荧光X射线。对于碘造影剂，分别具有32.2keV和34.7keV K射线能量的Ba射线和Ce发出的荧光x射线可以用于K吸收边为33.2keV的碘的K边减去。对于Gd，来自Ho和Yb的分别具有47.5和52.4keVK射线能量的荧光x射线可以用于50.2keV的Gd的K边减去。已经通过使用包含三种不同类型的造影剂(碘、钡和Gd)的体模进行了立体透视。较少

项目成果

F.Toyofuku, K.Tokumori: "Monochromatic x-ray CT using synchrotron radiation (in Japanese)"Japanese Journal of Radiological Technology. 56(6). 792-792 (2000)

F.Toyofuku、K.Tokumori：“使用同步加速器辐射的单色 X 射线 CT（日语）”日本放射线技术杂志。

C.Uyama,K.Tokumori,F.Toyofuku et al.: "Proposal for medical application beamlines of the SPring-8"Proc.of SPIE. 3770. 193-204 (1999)

C.Uyama、K.Tokumori、F.Toyofuku 等人：“SPring-8 医学应用光束线的提案”Proc.of SPIE。

T.Saito, H.Kudo, T.Takeda, Y.Itai, K.Tokumori, F.Toyofuku, K.Hyodo, M.Ando, K.Nishimura, and C.Uyama: "Three-dimensional monochromatic x-ray computed tomography using synchrotron radiation"Optical Engineering. 37(8). 2258-2268 (1998)

T.Saito、H.Kudo、T.Takeda、Y.Itai、K.Tokumori、F.Toyofuku、K.Hyodo、M.Ando、K.Nishimura 和 C.Uyama：“三维单色 X 射线计算

徳森謙二,豊福不可依 他: "蛍光X線源を用いた単色X線CT"医学物理. 20巻Sup.4. 258-259 (2000)

Kenji Tokumori、Kai Toyofuku 等人：“使用荧光 X 射线源的单色 X 射线 CT”医学物理学卷 20 Sup. 258-259 (2000)

K.Tokumori, F.Toyofuku, Y.Mito, S.Baba: "Application of CdTe array detector monochromatic x-ray CT (in Japanese)"Hoshasen. 24(2). 25-29 (1998)

K.Tokumori、F.Toyofuku、Y.Mito、S.Baba：“CdTe 阵列探测器单色 X 射线 CT 的应用（日语）”Hoshasen。