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CTC Daisuke Tsurumaru 1 , Yusuke Nishimuta 1 , Yutaro Shimomura 1 , Katsuya Nanjo 1 , Yoshiaki Taniguchi 2 , Kousei Ishigami 1 1Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University 2Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University Keyword: CT colonography , 大腸CT , 早期大腸癌 , バーチャル内視鏡 , 深達度診断 pp.406-412
Published Date 2026/4/25
DOI https://doi.org/10.11477/mf.053621800610040406
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 CT colonography(CTC), a three-dimensional CT imaging technique, allows stereoscopic visualization of the colon. With advances in bowel preparation and regulatory changes enabling radiological technologists independently perform examinations, CTC has gained increasing attention as a practical screening modality. It demonstrates high diagnostic accuracy for lesions measuring ≥6mm(sensitivity, 88% ; specificity, 92%)and constitutes a valuable alternative for fecal occult blood-positive patients avoiding colonoscopy. Furthermore, virtual barium enema views and multiplanar reconstruction enable direct evaluation of mural invasion and depth of early colorectal cancer. By integrating traditional morphological principles from barium studies with CT-based sectional analyses, CTC has evolved into a user-friendly and reproducible tool that bridges endoscopic and pathological perspectives for early colorectal cancer diagnosis.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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