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국소 간병변 감별에서 단발고속스핀에코 기법과 균형항정상태세차를 이용한 고속영역 기법간의 비교

Other Titles
 The Comparison between Single Shot Turbo Spin Echo and B-FFE (Balanced Turbo Field-echo) in the Differentiation of Focal Liver Lesions 
Authors
 김영철  ;  김명진  ;  최진섭  ;  한광협  ;  정용은  ;  차승환 
Citation
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지), Vol.11(1) : 39-48, 2007 
Journal Title
Journal of the Korean Society of Magnetic Resonance in Medicine(대한자기공명의과학회지)
ISSN
 1226-9751 
Issue Date
2007
Keywords
Heavily T-2 weighted MRI ; turbo spin echo ; Steady state free procession ; echo time
Abstract
Purpose : To determine the diagnostic accuracy of four different sequences : moderately T2 weighted, two heavily T2-weighted single shot turbo spin-echo sequence and breath-hold axial-2D balanced turbo field-echo sequence(bFFE) for characterization of focal lesions. Materials and Methods : During the 3-month period between June and August 2005, seventy-six patients were proved to have ninety-three focal hepatic lesions on MR imaging. The patients consisted of 49 men and 27 women (age range, 15-75 years; mean age, 56.23 years). All MR images were acquired on a 1.5-T MR using the following sequences: 1. A breath-hold axial T2-weighted single shot turbo spin-echo sequence, 2. a breath-hold axial-2D balanced turbo field-echo sequence. Two radiologists performed quantitative analysis. Another radiologist measured the lesion-to-liver contrast-to-noise ratio at the region-of-interest in the four sequences. Results : There was no significant difference in inter-observer variability between the four sequences. The accuracy for both cyst and malignancy of moderate T2 weighted MRI (echo time: 80 msec) was also highest. There was significant difference for lesion characterization between moderate T2 weighted MRI and balanced steady state procession (p-value: 0.004) in the second reader. For longer echo time, the CNR of cystic lesions were markedly increased in comparison to lesions of other component. Conclusion : The accuracy and inter-observer variability of single shot turbo spin echo T2 weighted sequence was higher than bFFE. Although there was no statically significant difference, moderate T2 weighted MRI (echo time: 80 msec) was more accurate than heavily T2 weighted sequence (echo time: 300 msec). If the results for lesion characterization is equivocal in TE 80, the addition of heavily T2 weighted MRI (echo time: 180 msec) can be helpful.
Files in This Item:
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Myeong Jin(김명진) ORCID logo https://orcid.org/0000-0001-7949-5402
Chung, Yong Eun(정용은) ORCID logo https://orcid.org/0000-0003-0811-9578
Cha, Seung Whan(차승환)
Choi, Jin Sub(최진섭)
Han, Kwang-Hyub(한광협) ORCID logo https://orcid.org/0000-0003-3960-6539
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/96674
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