Multifocal spiral CT parallel re-constructive system

Abstract

The invention parallel reconstruction system for multisource helix CT, includes two modules: the multisource stand scanning module and the image reconstruction module. The multisource stand scanning module uses the scanning structure that the number of 2N+1 of X ray sources rolling synchronously, collects the projection data sending to the image reconstruction module; the image reconstruction module uses exactitude reconstruction arithmetic of multisource helix CT, the single computing assembly module uses the projection data reconstruction of the single X ray source to compute the intermediate result, the computer conforms and reset to get the result, stores the result and display output.

Description

technical field

[0001] The present invention relates to an image system used in the technical field of biomedical image processing, in particular to a multi-source helical CT parallel reconstruction system that uses multiple processing units to realize multi-source helical CT imaging in parallel. Background technique

[0002] The working principle of multi-source spiral CT is as follows: 2N+1 X-ray tubes are symmetrically installed in the same gantry. When the gantry rotates, the examination table carrying the object to be measured moves linearly along the direction perpendicular to the gantry. . At this time, if the object to be measured is observed as a reference system, the trajectory of 2N+1 X-ray tubes is 2N+1 helical lines. The X-rays emitted from the X-ray source pass through the measured object and are collected by the opposite detector to obtain the projection data required for reconstruction. Since 2N+1 detectors corresponding to 2N+1 X-ray sources simultaneously...

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