The Added Value of Reduced Field-of-view IRIS-DWI Sequence for T2WI Sequence in T Staging of Rectal Cancer

We aimed to evaluate the added value of reduced field-of-view (rFOV) IRIS-DWI sequence for T2WI sequence in evaluating T staging of rectal cancer. ROC analysis showed the diagnosis performance based on T2WI + rFOV IRIS-DWI imaging was superior to single T2WI sequence. The AUC, sensitivity and specificity were 0.928, 93.3%, 91.7% and 0.658, 73.3%, 58.3% for two diagnosis methods respectively. The result showed significant difference between two methods with P = 0.002. rFOV IRIS-DWI combined T2WI imaging could provide higher diagnosis confidence and higher diagnosis accuracy for rectal cancer T staging.