CT Colonography Atlas: For the Practicing Radiologist by Thomas Mang M.D., Gernot Böhm M.D., Wolfgang Schima M.D.,

By Thomas Mang M.D., Gernot Böhm M.D., Wolfgang Schima M.D., M.Sc. (auth.), Emanuele Neri, Lorenzo Faggioni, Carlo Bartolozzi (eds.)

This easy-to-use atlas includes a suite of consultant universal and weird digital colonoscopy (CT colonography, CTC) circumstances that physicians and radiologists might anticipate to come across in the course of their scientific perform. The atlas displays the real contemporary advances in picture acquisition, sufferer guidance, and photo processing and is hence thoroughly up to date. every one case is gifted with the local CT photographs, built-in photographs bought via 3D picture processing, and colonoscopic correlation. issues coated comprise common appearances, anatomical variations, pitfalls, diverticula, lipomas, inflammatory bowel sickness, polyps, flat lesions, cancers, and the postsurgical colon. by way of providing the most positive factors of anatomy and pathology, this atlas will function a useful instrument either for radiologists appearing CTC and for clinicians who have to overview the CTC examinations in their patients.

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Undescended Cecum with Malrotation Fig. 2b Coronal MPR Fig. 2a 3D colon map Description A 45-year-old man with recurrent cramp-like abdominal pain. The 3D map shows an undescended cecum lying in the upper right abdomen (Fig. 2a). Coronal MPR shows torsion of mesenteric vessels (Fig. 2b). Malrotation with a movable cecum secondary to a defect of intestinal attachment was demonstrated. Such situation is at risk for development of a midgut volvulus, and abdominal surgery was performed to properly fix the intestinal mesentery.

6a and 6b). The upper segment of the left colon is the only movable one in this patient, indicating persistence of a descending mesocolon, while its caudal segment and the sigmoid colon are on the right side (close to the cecum) due to a low attachment of the left colon (Figs. 6a and 6b). 26 R. Bouzas Case 7. Variant of Splenic Flexure Description Fig. 7a 3D colon map Incomplete colonoscopy. Slightly reversed splenic flexure with normal position of the descending colon. Fixed and very close colonic angles are well-known causes of incomplete colonoscopy, yet all colonic segments are well distended at CTC, thus enabling its optimal exploration.

45 d Catheter (white arrow). Conclusion: always deflate the balloon before the second acquisition 46 P. Lefere and S. Gryspeerdt Case 3. Spasm Solution Problem Optimal colonic distension is mandatory for correct interpretation of the CT colonography images. , acquisition in supine and prone position). Good distension flattens the semilunar folds and improves the visibility of the colonic wall. In case a spasm occurs, the shape of the colonic lumen is defined by the taenia coli: round in the sigmoid (Fig.

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