Three-dimensional digital imaging method of large view field cone-beam X-ray tilting scanning of biased detector
An oblique scanning and three-dimensional digital technology, applied in the field of X-ray computer tomography, can solve the problems of small imaging field of view and low detection efficiency
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[0054] Aiming at the problems of small imaging field of view and low detection efficiency faced by traditional CL imaging, the present invention proposes a detector biased large field of view cone beam X-ray oblique scanning three-dimensional digital imaging method, and deduces its filtered back projection according to its geometric structure characteristics The reconstruction algorithm and the data truncation and smoothing preprocessing method can reconstruct and obtain the three-dimensional computed tomography image of the scanning area by using the data obtained by the array detector under the 360-degree scanning angle.
[0055] Such as figure 1 As shown, the specific implementation is as follows:
[0056] 1. Set the large field of view cone beam X-ray oblique scanning geometric structure offset by the area array detector to form a digital ray projection image acquisition system. The specific implementation steps are:
[0057] (1) At a position of δ detection channels from...
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