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화학적 포화 호흡정지 급속 자기공명영상에서 국소적 간지방병변의 특성화

Other Titles
 Chemical Saturation Breath-hold Fast MR Imaging for characterization of Regional Fatty Changes in Liver 
Authors
 김동국  ;  유정식  ;  김기황  ;  김태훈  ;  조병준  ;  오세정  ;  안창수  ;  김지형 
Citation
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지), Vol.1(1) : 135-141, 1997 
Journal Title
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지) 
ISSN
 1226-9751 
Issue Date
1997
Abstract
Purpose: To assess the usefulness of breath-hold fast MR imaging of liver with fat suppression (FS) by application of chemical saturation technique in the diagnosis of regional fatty changes suspected in sonography. Materials and Methods: Thirteen patients who had focal lesions with diffuse, homogeneous signal changes after FS through chemical saturation technique without additional changes of imaging parameter during MR imaging of liver were selected. T1-weighted fast low-angle shot and T2-weighted turbo spin-echo sequences were obtained with or without FS during each single breath-holding session. Subjective changes of signal intensity between the pre-FS and the FS images were compared with the sonographic findings in each lesion. Results: Seven lesions of decreased signal intensity after FS on T1 or T2-weighted images, including three lesions only at FS T1 images, were regarded as focal fat infiltration. All seven lesions had compatible sonographic findings as homogenously echogenic areas. Another six lesions of subjectively increased signal intensity including two lesions only at FS T2 images were regarded as focal fat sparing. All six lesions had sonographic findings as homogenous echo poor areas suggesting focal fat sparing. In cases regarded as fat infiltration, score changes were more prominent at FS T1 images than FS T2 images(p=0.0002). In cases regarded as fat sparing, score changes were more prominent at FS T2 images than FS T1 images(p=0.042). Conclusion: Breath-hold fast T1 and T2-weighted MR imaging with and without chemical saturation pre-pulse may be sufficient for characterization of regional fatty changes in the differential diagnosis of focal hepatic lesion found at sonography.
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/22282913/177827
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