Moderately T2-weighted Images Obtained with the Single-Shot Fast Spin-Echo Technique

The purpose of this study was to determine whether a distinction could be made between benign and malignant urinary obstructions in moderately T2-weighted images obtained with the single-shot fast spin-echo technique. Forty-four lesions in 39 patients with urinary obstruction were evaluated with the single-shot fast spin-echo (SSFSE) technique with an effective TE of 90-100 ms and without fat saturation. Benign and malignant lesions were compared for the presence of ureteral wall thickening and a signal intensity relative to the proximal ureteral wall. Statistically significant differences were found between benign and malignant lesions in both morphologic change (P