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호흡정지 T1 강조 간 자기공명영상에서 동위상과 역위상 FMPSPGR 영상의 비교

Other Titles
 Comparison of In-Phase and Opposed-Phase FMPSPGR Images in Breath-hold T1-weighted MR IMaging of Liver 
Authors
 김명진  ;  김만득  ;  홍혜숙  ;  정재준  ;  양희철  ;  이종태  ;  유형식 
Citation
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지), Vol.1(1) : 142-147, 1997 
Journal Title
 Journal of the Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회지) 
ISSN
 1226-9751 
Issue Date
1997
Abstract
Purpose: To compare the effectiveness of the in-phase (IP) sequence and the opposed-phase (Op) sequence in the detection of focal hepatic lesions in the single breath-hold hepatic MR imaging with fast gradient T1-weighted pulse sequences. Materials and Methods: IP and OP T1-weighted breath-hold imaging was performed using fast gradient echo sequences in 45 patients referred for known focal hepatic lesions, in which 78 lesions were detected. Three blind readers independently reviewed the images for lesion detectability. The signal-to-noise ratio (SNR) of the liver, the lesion-to-liver contrast-to-noise ratio (CNR) and the liver-to-spleen CNR were also compared. A consensus was reached by three readers to determine which sequence is better in image quality. Results: On OP images, 61(78%), 61(78%), and 63(89%) lesions were correctly identified for reader 1, 2 and 3, respectively. On IP images, 66(85%), 65(83%), and 65(93%) lesions were detected for each reader, respectively. When two image sets were combined, 71(91 %), 69(88 %), and 76(97%) lesions respectively were detected for each reader. In cases of hepatocellular carcinoma, liver-to-Iesion CNR was greater on the OP images(p (0.05), but in other lesions significant difference was not demonstrated. Liver-to-spleen CNR was higher on OP images(p ( 0.1), but the SNR of the liver was higher on the IP images. Conclusion: Use of both IP and OP imaging can be helpful to avoid erroneous missing of some focal hepatic lesions.
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Chung, Jae Joon(정재준) ORCID logo https://orcid.org/0000-0002-7447-1193
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/177828
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