公开(公告)号：US20180156926A1

公开(公告)日：2018-06-07

申请号：US15859789

申请日：2018-01-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Thomas FRACH ,  Klaus FIEDLER

IPC: G01T1/20 ,  G01T7/00 ,  G01T1/29 ,  G01T1/24 ,  G01T1/164 ,  A61B6/03

CPC classification number: G01T1/2018 ,  A61B6/037 ,  G01T1/1642 ,  G01T1/248 ,  G01T1/2985 ,  G01T7/005

Abstract: A radiation detector includes an array of detector pixels each including an array of detector cells. Each detector cell includes a photodiode biased in a breakdown region and digital circuitry coupled with the photodiode and configured to output a first digital value in a quiescent state and a second digital value responsive to photon detection by the photodiode. Digital triggering circuitry is configured to output a trigger signal indicative of a start of an integration time period responsive to a selected number of one or more of the detector cells transitioning from the first digital value to the second digital value. Readout digital circuitry accumulates a count of a number of transitions of detector cells of the array of detector cells from the first digital state to the second digital state over the integration time period.

公开(公告)号：US20160146949A1

公开(公告)日：2016-05-26

申请号：US15000336

申请日：2016-01-19

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Thomas FRACH ,  Klaus FIEDLER

IPC: G01T1/20 ,  G01T1/29 ,  G01T7/00

CPC classification number: G01T1/2018 ,  A61B6/037 ,  G01T1/1642 ,  G01T1/248 ,  G01T1/2985 ,  G01T7/005

Abstract: A radiation detector includes an array of detector pixels each including an array of detector cells. Each detector cell includes a photodiode biased in a breakdown region and digital circuitry coupled with the photodiode and configured to output a first digital value in a quiescent state and a second digital value responsive to photon detection by the photodiode. Digital triggering circuitry is configured to output a trigger signal indicative of a start of an integration time period responsive to a selected number of one or more of the detector cells transitioning from the first digital value to the second digital value. Readout digital circuitry accumulates a count of a number of transitions of detector cells of the array of detector cells from the first digital state to the second digital state over the integration time period.

Abstract translation: 辐射检测器包括检测器像素的阵列，每个检测器像素包括检测器单元的阵列。 每个检测器单元包括偏置在击穿区域中的光电二极管和与光电二极管耦合的数字电路，并且被配置为输出响应于光电二极管的光子检测的静止状态的第一数字值和第二数字值。 数字触发电路被配置为响应于从第一数字值转换到第二数字值的一个或多个检测器单元的选定数量，输出指示积分时间段开始的触发信号。 读出数字电路在积分时间段内累积检测器单元阵列的检测器单元从第一数字状态到第二数字状态的转移次数的计数。