Zhongpai S&t (shenzhen) Co., Ltd

Siwei Xie

Zhixiang Zhao

Qiu Huang

Qiyu Peng

Zheng Gong

Xi Zhang

Jingwu Yang

Fenghua Weng

Yunlong Zan

Rendong Zhang

An apparatus for measuring photon information and a photon measurement device are disclosed. The apparatus comprises a signal conversion module for converting an initial signal outputted by the photoelectric sensor into a converted signal in a voltage form, an integral comparison module for integrating a difference between the initial signal and a feedback signal from the negative feedback module and generating a comparison signal based on a magnitude relationship between a reference level and a combination result of an integral signal and the converted signal, wherein the integral signal is a signal for representing an integral of the difference between the initial signal and the feedback signal, a transmission control module for controlling the comparison signal to be transmit based on a clock signal to output a digital signal, a negative feedback module for converting the digital signal into the feedback signal and feeding the feedback signal back to the integral comparison module, and a measurement module for determining, based on the comparison signal and/or the digital signal, an arrival time of a high-energy photon detected by the photoelectric sensor. The apparatus and the device require few circuit components, and can realize high-precision time measurement.

Apparatus for measuring photon information and photon measurement device

The present invention provides a detector and an emission tomography device including the detector. The detector comprises: a scintillation crystal array comprising a plurality of scintillation crystals; and a photo sensor array, coupled to an end surface of the scintillation crystal array and comprising multiple photo sensors. At least one of the multiple photo sensors is coupled to a plurality of the scintillation crystals respectively. Surfaces of the plurality of the scintillation crystals not coupled to the photo sensor array are each provided with a light-reflecting layer, and a light-transmitting window is disposed in the light-reflecting layer on a surface among the surfaces adjacent to a scintillation crystal coupled to an adjacent photo sensor. The detector has DOI decoding capability. No mutual interference occurs during DOI decoding, and decoding is more accurate. Moreover, with the number of photo sensor arrays being the same, the decoding capability for the scintillation crystals is significantly improved. With the number of photo sensor arrays being the same, the size of the photo sensor array and the number of channels of a readout circuit of the photo sensors of the present invention can be reduced by three-quarters to eight-ninths.

Detector and emission tomography device with the detector

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Wuhan, China

Siwei Xie