公开(公告)号：US09220469B2

公开(公告)日：2015-12-29

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 adapted to produce projection data in response to X-ray photons 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, to generate a simulated count rate for each of the energy bins by using the total energy intensity, to determine a set of energy intensity dependent material decomposition vectors, and, for the measured projection data, to perform material decomposition.

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，其适于响应于X射线光子产生投影数据并产生具有针对能量仓的记录计数的电信号，以及 总能量强度。 该系统还包括适于接收电信号的数据处理电路，通过使用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，并且对于所测量的 投影数据，进行物质分解。