PURPOSE: The purpose of our study was to evaluate the efficacy of echo planar imaging (EPI) as a breath-holding T2-weighted technique for imaging focal hepatic lesions. METHOD: Forty-eight patients with focal hepatic lesions (9 metastases, 21 hepatocellular carcinomas, 1 cholangiocarcinoma, 16 hemangiomas, and 2 cysts) underwent single shot EPI with and without a small diffusion-sensitizing gradient (DSG) (beta values = 55 s/mm2) at 1.5 T. Comparison was made with breath-holding T2-weighted fast SE (FSE) sequences. RESULTS: Lesion-to-liver signal intensity ratio of EPI was significantly better than that of T2-weighted FSE (p < 0.05) in patients with metastasis. Use of DSG suppressed bright signals from vessels or periportal tissue, resulting in better conspicuity of small lesions. EPI with DSG visualized more metastatic deposits than T2-weighted FSE (p < 0.01). CONCLUSION: EPI with a small DSG is helpful for detection of small hepatic metastases.
PURPOSE: The purpose of our study was to evaluate the efficacy of echo planar imaging (EPI) as a breath-holding T2-weighted technique for imaging focal hepatic lesions. METHOD: Forty-eight patients with focal hepatic lesions (9 metastases, 21 hepatocellular carcinomas, 1 cholangiocarcinoma, 16 hemangiomas, and 2 cysts) underwent single shot EPI with and without a small diffusion-sensitizing gradient (DSG) (beta values = 55 s/mm2) at 1.5 T. Comparison was made with breath-holding T2-weighted fast SE (FSE) sequences. RESULTS: Lesion-to-liver signal intensity ratio of EPI was significantly better than that of T2-weighted FSE (p < 0.05) in patients with metastasis. Use of DSG suppressed bright signals from vessels or periportal tissue, resulting in better conspicuity of small lesions. EPI with DSG visualized more metastatic deposits than T2-weighted FSE (p < 0.01). CONCLUSION: EPI with a small DSG is helpful for detection of small hepatic metastases.
Authors: Robert M Hicks; Judy Yee; Michael A Ohliger; Stefanie Weinstein; Jeffrey Kao; Nabia S Ikram; Thomas A Hope Journal: Magn Reson Imaging Date: 2016-04-21 Impact factor: 2.546
Authors: Andrew D Hardie; Mohit Naik; Elizabeth M Hecht; Hersh Chandarana; Lorenzo Mannelli; James S Babb; Bachir Taouli Journal: Eur Radiol Date: 2010-02-11 Impact factor: 5.315
Authors: D M Koh; E Scurr; D J Collins; A Pirgon; B Kanber; N Karanjia; G Brown; M O Leach; J E Husband Journal: Eur Radiol Date: 2006-05-12 Impact factor: 5.315