. Author manuscript; available in PMC: 2009 Nov 1.

Published in final edited form as: AJR Am J Roentgenol. 2008 Nov;191(5):1503–1508. doi: 10.2214/AJR.07.3591

Table 4.

Distention scores from the QA software by colonic segment. Numbers are percent of colonic segment length having a distention ≥ 2 cm in diameter. In the prone position, the sigmoid colon was the least distended with statistical significance compared to the rectum and ascending colon (p < 0.01). In the supine scans, the descending colon was least distended with statistical significance compared to the rectum, transverse, and ascending colon (p < 0.05).

Segment	Prone (n=105)	Supine (n = 105)
Rectum	92.3 ± 15.3^*	77.4 ± 26.1^*
Sigmoid	84.1 ± 27.0^†	69.0 ± 34.0^†
Descending	85.1 ± 26.9^‡	66.2 ± 39.2^‡
Transverse	87.1 ± 24.8	83.7 ± 26.6
Ascending	91.4 ± 14.2	91.3 ± 13.1

^*,†,‡

p < .001 by paired t-test.