A radiation detector (24), comprising an upper scintillator (30 T ) of the two-dimensional array, disposed at a position facing the x-ray source to receive radiation, low energy radiation is converted into visible light and transmission of high-energy radiation. 下部闪烁体(30B)的二维阵列,其...
那么为了从不同的角度获取物体的信息,工程师们就让整个X射线发射端与接收端围绕着人体转起来,CT机也就变成了甜甜圈的形状: 左:CT设备原理图,Fan Beam Rotation: 从X射线管发射出来的扇形光束围绕着患者进行旋转, detector array: X射线接收器阵列, scan bed: 扫描床。 中:CT设备内部结构图。 右:商用CT设备的外...
Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.doi:US7054408 B2Haochuan JiangDavid M. HoffmanJames S. VartuliUS7054408 Apr 30, 2003 May 30, 2006 General Electric Company CT detector array having non pixelated scintillator array...
正电子发射型断层仪(Positron Emission Tomography, PET)是对正电子示踪剂的探测设备,具有极高灵敏度和精准的定量功能。而PET/CT是将PET与CT有机结合起来的融合设备,已经成为肿瘤、神经和心血管系统疾病诊断,临床分期和疗效评估的最佳影像技术。PET探测器(Detector)是PET、PET/CT...
In x-ray micro-CT applications, it is useful to increase the field of view by offsetting a two-dimensional (2D) detector array. In this technical note, we briefly review the methods for image reconstruction with an asymmetric 2D detector array, elaborate on the use of an associated weighting...
The detector array measures the amount of X-rays that pass throughthe body and are absorbed by the tissues. The data collected by the detector array is processed by a computer, which creates a cross-sectional image of thebody. The image shows the different densities of the tissues in the ...
Computer tomography - imaging device, containing:a two-dimensional array (20) of detector elements (22) for receiving of photons, which is composed of an x-ray source (12), issue, and for generating electrical signals proportional to them, wherein the detector elements (22) are arranged in ...
①X线球管（X-Raytube）；②高压发生器（HVGenerator）；③探测器列阵（DetectorArray）；④数据获取系统(DataAcquisitionSystem)；⑤数据处理系统（DataProcessing）；⑥图像重建-卷积和反投影；（Reconstruction-Convolution&Backprojection）；⑦图像显示—监视器和窗电路；（ImageDisplay-monitor&windowcurcuit）安装与调试对...
[1,2]. In the early days of CT, successive single-slice attainments with different kVp were performed as a dual-energy technique. In contrast, the DSCT system is equipped with two data measurement systems, each comprised of one X ray tube and one corresponding ...
Yu Z, Leng S, Jorgensen SM, Li Z, Gutjahr R, Chen B, et al. Evaluation of conventional imaging performance in a research whole-body CT system with a photon-counting detector array. Phys Med Biol 2016;61:1572-1595 Mijnheer BJ, Guldbakke S, Lewis VE, Broerse JJ. Comparison of the ...