System and method for pulse imaging of CT scanner

Abstract

The invention provides a system and method for pulse imaging of a CT scanner. The system for pulse imaging of the CT scanner comprises an annular X-ray source, an annular detector, a controller and a data processing module. The method for pulse imaging of the CT scanner comprises the steps that (1) the controller controls the annular X-ray source and the annular detector to carry out position change, controls X-ray source modules at the appointed positions to generate X-rays in the process of the position change, controls X-ray source modules at the positions which are not appointed to not generate X-rays in the process of the position change; (2) the annular detector detects the X-rays generated by the annular X-ray source, and outputs detection signals; (3) the data processing module collects signals output by detector modules, and carries out imaging processing according to the collected signals. The system for pulse imaging of the CT scanner is simple in structure, can conveniently achieve pulse transmission of the X-ray source modules, and reduces the radiation dosage 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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