X-ray image sensor, flat panel detector and method for image acquisition and correction thereof

Abstract

The present invention provides an X-ray image sensor, a flat panel detector, and an image acquisition and correction method of the flat panel detector. The X-ray image sensor at least comprises a sensor panel, a pixel array, m first row scanning lines, m second row scanning lines, n first column read-out lines, and n second column read-out lines; the pixel array is located on the sensor panel andis composed of m*n pixel elements of the same size, wherein m and n are natural numbers greater than or equal to 1; the pixel elements at least comprise signal pixels for performing photoelectric conversion on useful signals and correction pixels for collecting interference signals, wherein the signal pixels and correction pixels are arranged alternately; and the m first row scanning lines, the msecond row scanning lines, the n first column read-out lines, and the n second column read-out lines are located on the sensor panel. According to the X-ray image sensor, the flat panel detector, andthe image acquisition and correction method of the flat panel detector of the invention, the X-ray image sensor and the flat panel detector are improved and optimized, so that the X-ray image sensor and the flat panel detector are immutable to interference signals in time and space, and the influence of the above-mentioned interference signals on images can be eliminated through a correction mode.

Description

technical field [0001] The invention relates to the technical field of detectors, in particular to an X-ray image sensor, a flat panel detector and an image acquisition and correction method thereof. 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 t...

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Problems solved by technology

[0008] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an X-ray image sensor, a flat panel detector and an image acquisition and correction method thereof, which are used to solve the problem that the X-ray image sensor and detector in the prior art are easily damaged. The influence of interference signals in time and space leads to the problem of miscorrection of the collected images in time and space

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