公开(公告)号：US10398394B2

公开(公告)日：2019-09-03

申请号：US15400798

申请日：2017-01-06

Applicant: General Electric Company

Inventor： Yannan Jin ,  Peter Michael Edic ,  Xue Rui ,  Geng Fu

IPC: A61B6/00 ,  A61B6/03 ,  G01T1/36 ,  G01T1/29 ,  G01V5/00 ,  G06T11/00

Abstract: The present approaches relates to the use of silicon-based energy-discriminating, photon-counting detectors, such as for use in X-ray based imaging including computed tomography. The described approaches address the resolution and classification of X-ray photons affected by Compton scatter, which may be detected as having energy levels below their proper level due to collision or deflection events.

公开(公告)号：US20150182176A1

公开(公告)日：2015-07-02

申请号：US14145018

申请日：2013-12-31

Applicant: General Electric Company

Inventor： Yannan Jin ,  Peter Michael Edic ,  Vladimir A. Lobastov ,  Hewei Gao ,  Geng Fu

IPC: A61B6/00 ,  A61B6/03

CPC classification number: A61B6/4241 ,  A61B6/032 ,  A61B6/482 ,  G01T1/171

Abstract: A system includes an energy-discriminating, photon-counting X-ray detector, comprising a plurality of detector cells providing measurements corresponding to at least two energy bins and being adapted to produce projection data in response to X-ray photons that reach the X-ray detector and to produce an electrical signal having a recorded count for the energy bins and a total energy intensity. The system also includes data processing circuitry adapted to receive the electrical signal from one or more of the plurality of detector cells, to generate a simulated count rate for each of the energy bins by using the total energy intensity in a detector pile-up model, to determine a set of energy intensity dependent material decomposition vectors, and, for the projection data measured by one or more of the plurality of detector cells, to perform material decomposition by modeling the simulated count rate for each of the energy bins and utilizing a material decomposition vector selected from the set of energy intensity dependent material decomposition vectors and corresponding to the measured energy intensity from one or more of the plurality of detector cells.

Abstract translation: 一种系统包括能量鉴别光子计数X射线检测器，其包括多个检测器单元，其提供对应于至少两个能量箱的测量值，并且适于响应于到达X射线的X射线光子产生投影数据， 并且产生具有用于能量箱的记录计数和总能量强度的电信号。 该系统还包括适于从多个检测器单元中的一个或多个接收电信号的数据处理电路，通过使用检测器堆积模型中的总能量强度来产生每个能量箱的模拟计数率， 以确定一组依赖于能量强度的材料分解向量，并且对于由多个检测器单元中的一个或多个检测器单元测量的投影数据，通过对每个能量箱的模拟计数率进行建模并利用材料来执行材料分解 所述分解矢量选自所述一组能量强度依赖材料分解向量，并对应于来自所述多个检测器单元中的一个或多个的所测量的能量强度。