TY - JOUR
T1 - Fast MR imaging of the liver
T2 - Quantitative comparison of techniques
AU - Siewert, Bettina
AU - Müller, Markus F.
AU - Foley, Matthew
AU - Wielopolski, Piotr A.
AU - Finn, J. Paul
PY - 1994/10
Y1 - 1994/10
N2 - PURPOSE: To compare several techniques for fast magnetic resonance (MR) imaging of focal liver lesions. MATERIALS AND METHODS: Ninety patients (37 men and 53 women, aged 19-92 years [mean, 54 years]) with 137 focal liver lesions (56 metastases, 13 hepatocellular carcinomas, 52 hemangiomas, 16 cysts) underwent MR imaging with rapid acquisition spin-echo (RASE), T1- weighted fast low-angle shot (FLASH), turboFLASH, segmented turboFLASH, and T2-weighted conventional and turbo spin echo (SE). Images were analyzed for spleen-to-liver and lesion-to-liver signal difference-to-noise ratios (SD/Ns). RESULTS: Turbo SE T2-weighted imaging had the highest SD/N for spleen-to-liver (P < .01) and for lesion-to-liver (P < .02) contrast. Segmented T1-weighted turboFLASH imaging had the second highest SD/N for spleen-to-liver (P < .001) contrast and was better overall than other T1- weighted sequences for depicting liver lesions (P < .01). Results at segmented turboFLASH imaging were second best for hemangiomas (P < .01). For metastases, no significant difference was found for results with the T1- weighted sequences. CONCLUSION: Segmented T1-weighted turboFLASH and turbo SE T2-weighted imaging have advantages over conventional techniques for liver imaging.
AB - PURPOSE: To compare several techniques for fast magnetic resonance (MR) imaging of focal liver lesions. MATERIALS AND METHODS: Ninety patients (37 men and 53 women, aged 19-92 years [mean, 54 years]) with 137 focal liver lesions (56 metastases, 13 hepatocellular carcinomas, 52 hemangiomas, 16 cysts) underwent MR imaging with rapid acquisition spin-echo (RASE), T1- weighted fast low-angle shot (FLASH), turboFLASH, segmented turboFLASH, and T2-weighted conventional and turbo spin echo (SE). Images were analyzed for spleen-to-liver and lesion-to-liver signal difference-to-noise ratios (SD/Ns). RESULTS: Turbo SE T2-weighted imaging had the highest SD/N for spleen-to-liver (P < .01) and for lesion-to-liver (P < .02) contrast. Segmented T1-weighted turboFLASH imaging had the second highest SD/N for spleen-to-liver (P < .001) contrast and was better overall than other T1- weighted sequences for depicting liver lesions (P < .01). Results at segmented turboFLASH imaging were second best for hemangiomas (P < .01). For metastases, no significant difference was found for results with the T1- weighted sequences. CONCLUSION: Segmented T1-weighted turboFLASH and turbo SE T2-weighted imaging have advantages over conventional techniques for liver imaging.
UR - http://www.scopus.com/inward/record.url?scp=0028001012&partnerID=8YFLogxK
U2 - 10.1148/radiology.193.1.8090918
DO - 10.1148/radiology.193.1.8090918
M3 - Article
C2 - 8090918
AN - SCOPUS:0028001012
SN - 0033-8419
VL - 193
SP - 37
EP - 42
JO - Radiology
JF - Radiology
IS - 1
ER -