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사중기 역동적 고속저각영상획득 자기공명영상을 이용한 국소간병변의 평가 : 동맥기의 특성화를 위한 조기영상획득의 유용성

Other Titles
 Assessment of Focal Liver Lesions with 4-Phase Dynamic FLASH MR Imaging : Usefulness of Early Image Acquisition for Chaacterization of Arterial Phase 
 조병준  ;  유정식  ;  김기황  ;  김태훈  ;  김지형  ;  오세정  ;  안창수  ;  정수윤  ;  이호철 
 Journal of the Korean Radiologist Society (대한방사선의학회지), Vol.39(4) : 717-724, 1998 
Journal Title
Journal of the Korean Radiologist Society(대한방사선의학회지)
Issue Date
Liver neoplasms, MR ; Magnetic resonance(MR), pulse sequence ; Magnetic resonance(MR), technology
PURPOSE: To document the usefulness of early image acquisition using the contrast-enhanced dynacic MR imagingfor characterization of various focal hepatic lesions during the arterial phase. MATERIALS AND METHODS:Seventy-nine patients with 145 focal liver lesions (71 hemangiomas, 59 hepatocellular carcinomas and 15metastases) underwent breathhold dynamic MR imaging using a fast low-angle shot sequence. After obtainingunenhanced T1-weighted images, four phase MR images were obtained 10, 35, 60 and 300 seconds after starting theinjection. Patterns of contrast enhancement were analyzed for each lesion, with an emphasis on first phase images. RESULTS: Forty-two of the 59 HCCs (71%) showed prominent contrast enhancement during the first phase. HCCssmaller than 2cm in diameter showed a more homogeneous enhancement pattern than those which measured 2cm ormore(24/25 vs 12/17;P<.05). Hemangiomas showed a globular enhancement pattern during the same phase in 51 of 71cases (72%), a finding which was more apparent in those whose diameter was 2cm or more(35/54 vs 16/17, p<.05).During the first phase of imaging, 12 of the 15 metastases showed peripheral enhancement of their thick rim. CONCLUSION: The use of early image acquisition on dynamic MR sequences is helpful in character-izing lesionsaccrding to their pattern of contrast enhancement.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Ki Whang(김기황)
Yu, Jeong Sik(유정식) ORCID logo https://orcid.org/0000-0002-8171-5838
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