PROSPECTIVE COMPARISON OF T2-WEIGHTED FAST SPIN-ECHO, WITH AND WITHOUT FAT-SUPPRESSION, AND CONVENTIONAL SPIN-ECHO PULSE SEQUENCES IN THE UPPER ABDOMEN

PURPOSE: To evaluate use of fast spin-echo (FSE) magnetic resonance im aging with and without fat suppression in the liver and upper abdomen. MATERIALS AND METHODS: Conventional spin-echo (SE) T2-weighted, FSE T 2-weighted, and fat-suppressed FSE T2-weighted images from 37 patients strongly suspected to have focal hepatic lesions were evaluated. RESU LTS: Quantitative analysis demonstrated that fat-suppressed FSE imagin g had the highest lesion-liver contrast-to-noise ratio; conventional S E imaging, the lowest. In a qualitative analysis, FSE imaging was pref erred. In a rank order analysis, FSE imaging was preferred 83% of the time and fat-suppressed FSE imaging 17% of the time as regards overall image quality; fat-suppressed FSE imaging was preferred 64% of the ti me, FSE imaging 23% of the time, and conventional SE imaging 13% of th e time as regards signal abnormality detection. CONCLUSION: FSE imagin g with and without fat suppression is a potentially useful pulse seque nce for evaluating the upper abdomen.