SiPM based automatic exposure detection device and method and flat panel detector

Abstract

The invention provides a SiPM based automatic exposure detection device and method and a flat panel detector. The SiPM based automatic exposure detection device is applied to the flat panel detector,and at least includes a SiPM sensor module, a signal conditioning circuit connected to the SiPM sensor module, a hysteresis comparison circuit connected to the signal conditioning circuit, and an FPGAcircuit connected to the hysteresis comparison circuit. The SiPM based automatic exposure detection device uses a SiPM as a sensor. The SiPM has the ability of single photon detection, and, comparedwith a sensor in an AED module, has stronger photon detection ability, can more quickly detect the change of X-rays, realize the synchronization of T1 and T0 to the greatest extent, reduce the dose loss, and greatly reduce or even eliminate a transition zone. The saturation recovery time of the SiPM is as short as an ns level, and an exposure end signal can be detected 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...

AI Technical Summary

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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