Figure 7b. Imaging with a gadolinium-enhanced spoiled gradient-echo sequence. (a) Non-fat-suppressed single-shot fast spin-echo MR image shows a Crohn lesion with prominent wall thickening at the distal ileum (arrows). (b, c) On unenhanced (b) and contrast-enhanced (c) spoiled gradient-echo MR images, the involved ileal segment shows intense wall enhancement compared with normal bowel segments, a finding that indicates an inflammatory active lesion.