Computed tomography method and device

Abstract

An imaging method, the object is placed in the detection area, and the detector is biased, and then the imaging system is moved along the longitudinal Z-axis, the ray source and the detector synchronously move around the object in a circular motion, scan and collect data, and Complement the fault based on the data. The imaging method of the present invention adopts the combination of detector bias and helical trajectory scanning to solve the image stitching method used in traditional CT imaging (especially cone beam CT imaging) to image at the stitching place of cone beam CT covered by the long Z axis The problem of artifacts is generated, and the area used by the detector is reduced to save system cost.

Description

technical field [0001] The present invention relates to an imaging method, in particular to a method for using a computer to perform photography on a tomography, and a device for implementing the method. Background technique [0002] Since the invention of the first CT prototype in 1971, CT imaging technology has played an important role in modern medical diagnosis. CT imaging equipment with a large imaging field of view is an urgent need for clinical applications. However, since CT detectors are expensive, the size of the detector will significantly affect the manufacturing cost of CT equipment. Configuring large-size detectors will significantly increase the manufacturing cost of CT imaging equipment. [0003] In order to obtain a larger CT imaging coverage volume, helical scanning is an ideal way to increase the imaging field of view. According to the search results of the academic paper database, German scientist Willi Kalender developed the first helical scanning CT ...

AI Technical Summary

Problems solved by technology

An obvious defect of this method is that obvious image artifacts are left at the splicing of the two 3D volume data, which is not conducive to the identification and diagnosis of doctors, and the CT scanning at the two positions requires additional moving process of the scanning device, which increases the Overall scan time, prone to unwanted motion artifacts in images

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