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Dynamic subtraction magnetic resonance imaging of cirrhotic liver - Assessment of high signal intensity lesions on nonenhanced T1-weighted images

Authors
 Jeong-Sik Yu  ;  Young Hwan Kim  ;  Neil M. Rofsky 
Citation
 JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY, Vol.29(1) : 51-58, 2005 
Journal Title
JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY
ISSN
 0363-8715 
Issue Date
2005
MeSH
liver ; liver, neoplasms ; magnetic resonance, technology ; magnetic resonance, 3-dimensional
Keywords
liver ; liver, neoplasms ; magnetic resonance, technology ; magnetic resonance, 3-dimensional
Abstract
PURPOSE: The purpose of this work was to determine the technical feasibility and value of dynamic subtraction (postcontrast-precontrast) magnetic resonance (MR) imaging for the assessment of hyperintense lesions on precontrast T1-weighted images in the cirrhotic liver.
METHODS: One hundred four hyperintense lesions on T1-weighted precontrast and arterial phase postcontrast images were subjected to analysis of their subtraction qualities depending on the lesion size, location and/or the degree of misregistration between the source images in 27 different MR imaging sets.
RESULTS: The quality of subtraction images was always diagnostic for lesions larger than 2 cm in diameter (n=8) but not diagnostic for 73% (40 of 55 lesions) of small subcentimetric lesions. Thirty-one subcapsular lesions always showed a variable degree of coregistration artifact. Only 3 of 35 lesions with a slice misregistration of 3 mm or more gave rise to subtraction images of diagnostic quality. For determining the contrast enhancement, the area under the receiver operating characteristic curve of 30 verified lesions was significantly larger (P <0.001) for subtraction images than for conventional arterial phase images.
CONCLUSION: Depending on the lesion size and/or location or the degree of misregistration between the source images, dynamic subtraction MR imaging can be useful for the characterization of hyperintense lesions on precontrast T1-weighted imaging.
Full Text
http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&AN=00004728-200501000-00010&LSLINK=80&D=ovft
DOI
OAK-2005-04019
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Yu, Jeong Sik(유정식) ORCID logo https://orcid.org/0000-0002-8171-5838
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/150967
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