CT scanner pulse imaging system and its pulse imaging method

Abstract

A pulse imaging system of a CT scanner and a pulse imaging method therefor. The system comprises an annular X-ray source (11), an annular detector (12), a controller (13), and a data processing module (14). The method comprises: (S131) the controller (13) controlling the annular X-ray source (11) and the annular detector (12) to change positions, and controlling an X-ray source module at a specified position to generate an X-ray and controlling an X-ray source module at a non-specified position not to generate an X-ray in the process of the position change; (S132) the annular detector (12) detecting the X-ray generated by the annular X-ray source (11), and outputting a detection signal; and (S133) the data processing module (14) collecting a signal output by each detector module, and performing imaging processing according to the collected signal. The pulse imaging system has a simple structure, and can implement pulse transmission of an X-ray source module very conveniently and reduce the radiation dose to a detected human body.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a CT scanner pulse imaging system and a pulse imaging method thereof. Background technique [0002] X-ray computed tomography (CT, Computed Tomography) is a commonly used endoscopic detection technology in modern medicine. CT technology mainly uses the X-ray beam generated by the X-ray source and the detector to rotate around the human body, and continuously scans the cross-section. In the process, the detector receives the attenuated X-ray information after passing through the human body and inputs it into the computer, and the electronic computer performs image reconstruction according to the received attenuated X-ray information to obtain images of the detected parts of the human body. [0003] The X-ray source in the CT scanner of the prior art mostly adopts the X-ray source based on the thermal emission of the tungsten (W) wire. The X-ray source is an X-ray source based on t...

AI Technical Summary

Problems solved by technology

When continuous pulse scanning is required, the X-ray source based on hot cathode will not be able to turn off the electron source. It can only be realized by adjusting the bias voltage to suppress electrons from hitting the anode target, or setting a mechanical gate at the ray exit. The structure is complex, the cost is high, and the CT scanner based on the hot cathode X-ray source has a large radiation dose to the human body, which is not conducive to human health

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