Method, apparatus and angiography imaging system for reconstruction of angiography images

By adding an X-ray imaging device to the C-arm DSA equipment and utilizing multi-angle, multi-time point projection data fusion technology, the problem of low 4D DSA image reconstruction quality was solved, and higher quality 4D DSA image reconstruction was achieved.

CN117100299BActive Publication Date: 2026-06-23UNITED IMAGING RES INST OF INNOVATIVE MEDICAL EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNITED IMAGING RES INST OF INNOVATIVE MEDICAL EQUIP
Filing Date
2023-08-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In the existing technology, the reconstruction quality of 4D DSA images is relatively low, mainly because when the C-arm DSA device acquires 2D DSA images at different angles, it is limited by the mechanical structure, resulting in reduced temporal resolution and high interference from overlapping blood vessels.

Method used

An independent X-ray imaging device is added to the C-arm DSA equipment to acquire projection data from different angles. By fusing projection data from multiple angles and time points, 4D DSA image reconstruction is performed to reduce interference from overlapping vascular areas and improve temporal resolution.

Benefits of technology

Without altering the original C-arm DSA device structure, the reconstruction quality of 4D DSA images was improved, interference from overlapping vascular regions was reduced, and temporal resolution and image reconstruction success rate were enhanced.

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Abstract

The application relates to a method and device for reconstructing an angiography image and an angiography imaging system, wherein the method for reconstructing the angiography image comprises the following steps: acquiring first projection data collected by a target imaging device at a first acquisition angle, and acquiring second projection data collected by an X-ray imaging device at a second acquisition angle; the X-ray imaging device is independent of the target imaging device, and the first acquisition angle is different from the second acquisition angle; reconstructing a four-dimensional angiography image according to the first projection data collected at multiple first acquisition angles and the second projection data collected at multiple second acquisition angles, and obtaining the four-dimensional angiography image. The method can obtain projection data at different angles without changing the collection track of the target imaging device, can reduce the interference of the blood vessel overlapping area, can consider the time resolution, and can improve the reconstruction quality of the 4D DSA reconstruction image.
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