Detection of colorectal lesions: lower-dose multi-detector row helical CT colonography compared with conventional colonoscopy.

Purpose: To compare the performance of lower-dose multi-detector row helical computed tomographic (CT) colonography with that of conventional colonoscopy in the detection of colorectal lesions.

Materials And Methods: One hundred fifty-eight patients underwent multi-detector row helical CT colonography (beam collimation, 4 x 2.5 mm; table feed, 17.

Multislice spiral CT colonography in the evaluation of colorectal neoplasms.

Purpose: The purpose of our study was to evaluate the efficacy of multislice spiral CT colonography: 1) in the diagnosis and staging of colorectal carcinoma; 2) in the evaluation of the proximal colon in patients with stenosing neoplasms.

Materials And Methods: There were 33 patients (21 males and 12 females) with known colorectal carcinoma diagnosed by conventional colonoscopy. All patients enrolled in the study underwent both conventional colonoscopy followed by CT colonography on the same day.

[Study of the mesenteric arteries with multislice spiral CT angiography].

The aim of our study was to optimize an high-resolution CT angiography protocol for the evaluation of mesenteric arteries using a multislice spiral CT equipment. A volumetric dataset was acquired during dynamic i.v.