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Effect of bowel preparation on rectal gas. Sagittal T2W images of patient 1 (a, b) and 2 (c, d) without (a, c) and with (b, d) bowel preparation. Enema did not reduce bowel loading in patient 1, while it decreased rectal distension in patient 2. Rectal distention scores were 5, 5, 4, 1 for reader 1 and 5, 5, 5, 2 for reader 2, respectively (a–d)
