Figure 1. (a) The overall signal intensity of intraluminal material relative to the bowel wall for both T₁ and T₂ weighted studies. (b) The capacity of this luminal signal material to mimic tumour overall for T₁ weighted and T₂ weighted strategies individually, and for the combined analysis of T₁ and T₂ weighting. Wilcoxon signed rank test statistics were used to detect significant differences: intraluminal material of signal intensity similar to that of tumour occurred less frequently on T₂ than T₁ weighted imaging, with combined analysis providing a lower incidence of such tumour-mimicking material than either T₁ weighted or T₂ weighted alone (p<0.001 in each case).