公开(公告)号：US20140254749A1

公开(公告)日：2014-09-11

申请号：US14350370

申请日：2012-10-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roger Steadman Booker ,  Randall Peter Luhta ,  Christoph Herrmann

IPC: H05G1/26 ,  G01N23/04 ,  G01T1/17

CPC classification number: H05G1/26 ,  G01N23/046 ,  G01T1/17 ,  G01T1/24 ,  G01T1/247 ,  G01T1/2985 ,  G01T7/005

Abstract: An imaging system (300) includes a detector array (314) with direct conversion detector pixels that detect radiation traversing an examination region of the imaging system and generate a signal indicative of the detected radiation, a pulse shaper (316) configured to alternatively process the signal indicative of detected radiation generated by the detector array or a set of test pulses having different and known heights that correspond to different and known energy levels and to generate output pulses having heights indicative of the energy of the processed detected radiation or set of test pulses, and a thresholds adjuster (330) configured to analyze the heights of the output pulses corresponding to the set of test pulses in connection with the heights of set of test pulses and a set of predetermined fixed energy thresholds and generate a threshold adjustment signal indicative of a baseline based on a result of the analysis.

Abstract translation: 成像系统（300）包括具有直接转换检测器像素的检测器阵列（314），其检测穿过成像系统的检查区域并产生指示检测到的辐射的信号的辐射;脉冲整形器（316），被配置为交替地处理 指示由检测器阵列产生的检测到的辐射的信号或具有对应于不同和已知能级的不同和已知高度的一组测试脉冲，并且产生具有指示经处理的检测到的辐射或一组测试脉冲的能量的高度的输出脉冲 ，以及阈值调整器（330），其被配置为分析与所述一组测试脉冲相对应的输出脉冲的高度以及一组预定的固定能量阈值，并且生成指示 基于分析结果的基准。