CT像(EMI brain)から縦断面像の再構成処理

概要

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The software has been described to reconstruct the vertical sections from the CT-1010 (EMI) transverse sections, using the off-line small computer system (TEAC) with 16K of core memory. The normal slice separation (10mm) gives sections with poor resolution in the vertical direction, so that we have used 3mm or 5mm overlapping scan. The matrix size of the transverse section is converted a 160×160 matrix into a 128×128 matrix to reconstruct the vertical sections easily. In order to improve the image quality of the vertical sections, we have used some correction techniques as follows. (1) Noise suppression by the slice integration. (2) Correction for the spatial distortion by interpolation of 3rd order. (3) Contrast enhancement using the digital filtering method. The vertical sections after reconstruction are transfered to the CT-1010 disc and displayed on the CRT using the system's program. Effective vertical sections were obtained by through this processing.
公益社団法人日本放射線技術学会の論文
1978-09-01