Automatic exposure detection device and method based on sipm, flat panel detector

Abstract

The present invention provides a SiPM-based automatic exposure detection device and method, and a flat panel detector, wherein the SiPM-based automatic exposure detection device is applied to a flat panel detector, and it at least includes: a SiPM sensor module connected to the SiPM The signal conditioning circuit of the sensor module is connected to the hysteresis comparison circuit of the signal conditioning circuit, and is connected to the FPGA circuit of the hysteresis comparison circuit. The SiPM-based automatic exposure detection device of the present invention uses SiPM as a sensor, and SiPM has single-photon detection capability. Compared with the sensor in the existing AED module, it has stronger photon detection capability and can detect X-rays more quickly. Changes, to maximize the synchronization of T1 and T0 moments, reduce dose loss, greatly reduce or even eliminate the transition zone; the saturation recovery time of SiPM is as short as ns level, which can detect the exposure end signal more quickly and accurately.

Description

technical field [0001] The invention relates to the technical field of detectors, in particular to a SiPM-based automatic exposure detection device and method, and a flat panel detector. Background technique [0002] Digital Radiography (Digital Radiography, referred to as DR), is a new technology of X-ray photography developed in the 1990s. With its remarkable advantages such as faster imaging speed, more convenient operation, and higher imaging resolution, it has become It is the leading direction of digital X-ray photography technology and has been recognized by clinical institutions and imaging experts all over the world. The technical core of DR is the flat panel detector, which is a sophisticated and expensive device that plays a decisive role in the imaging quality. The flat panel detector is the X-ray receiving device in the DR system. In the DR system, the high-voltage generator and the ball tube control the output of X-rays. The X-rays pass through the object and...

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Problems solved by technology

[0010] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a SiPM-based automatic exposure detection device and method, and a flat panel detector, which are used to solve the problem that the photon detection capability of the AED module sensor in the prior art is weak and cannot Faster detection of light signals, larger loss of X-ray dose, wider transition band, and longer sensor saturation recovery time of the AED module in the prior art, poor accuracy of detection of exposure end signals

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