Linear CT imaging system and scanning imaging method

By superimposing the projection data of multiple detector units in a linear CT system and utilizing weighting coefficients and similar ray path technology, the image quality of linear CT scanning is improved. This solves the problems of avoiding mechanical rotating parts and meeting the requirements of rapid scanning, achieving highly efficient imaging results.

CN121994838APending Publication Date: 2026-05-08NUCTECH CO LTD +1
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Patent Information

Application Number
CN202610405384.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-30
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

How to improve the image quality of linear CT scans, especially in fields such as industrial non-destructive testing and security inspection, while avoiding mechanical rotating parts to achieve flexible and rapid scanning.

Method used

A linear scanning channel and scanning components, including an X-ray source and a detector, are used. The projection data generated by multiple detection units are superimposed and processed by a data processing device. The data is weighted and summed using weighting coefficients, and the spatial and temporal dimensions of the detection units are combined to aggregate the data, thereby improving the signal-to-noise ratio and imaging quality.

Benefits of technology

It effectively cancels out random noise from individual detection units, improves the signal-to-noise ratio and imaging clarity of projected data, optimizes imaging quality, and adapts to different detection scenarios without the need for additional hardware.

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Abstract

The invention provides a linear CT imaging system and a scanning imaging method, and relates to the technical field of radiation imaging and nondestructive testing. The system comprises a linear scanning channel which is used for a scanning object to pass through and extends along a first direction; the scanning assembly comprises a ray source and a detector, the ray source and the detector are arranged on the opposite sides of the scanning channel in the second direction, the ray source is configured to emit ray beams, the detector comprises a plurality of detection units, and the detection units are configured to detect the ray beams emitted by the ray source and passing through a scanned object, projection data are generated based on the detected ray beam, and the scanning assembly and the scanning object are in relative linear motion; the system further comprises a data processing device, the data processing device is electrically connected with the detector, and the data processing device is configured to perform superposition processing on the at least two projection data generated by the at least two detection units.
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