ヘリカルスキャンＣＴを利用した直腸癌の三次元表示

DOI 被引用文献6件 参考文献9件

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  • Three-dimensional Colonoscopy of rectal carcinoma with use of Helical Scanning CT.

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We attempted to obtain the three-dimensional (3-D) CT scan findings of rectal carcinoma with use of helical scanning by using the air as a contrast medium. We investigated whether the 3-D CT colonoscopy was useful for diagnosis of rectal disease and mass screening of colorectal carcinama, comparing with colonoscopy images. The modality used was TCT-900S. Axial images were taken with an interslice gap of 5mm, 5mm/sec table speed, and 1mm reconstruction intervals. About 70-80 axial images of around rectal carcinoma in cross-section were employed to obtain the 3-D voxel image data. Air was insufflated from the anal to extend the colon wall and to provide a contrast medium. In abdominal study 3-D recognition of the colon wall and carcinoma structure was well visualized and could help to grasp the structures of rectal carcinoma. Further-more, this method has several advantages as follows; 1) invasiveness, 2) little physical burden for patients and 3) little dependence of the examination technique ability. There-fore, with the progress of computer, three-dimensional CT colonoscopy could be applied for mass screening of colorectal carcinoma in future potential.

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