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경동맥의 초고속 조영증강 자기공명혈관조영술 : 경동맥과 경정맥의 식판별에 대한 시간 조정변수의 최적화

Other Titles
 Ultrafast Contrast-Enhanced MR Angiography of the Carotid Artery : Time Optimization for Discrimination of the Arterial from the Venous Phase 
Authors
 권우철  ;  정태섭  ;  주진양  ;  Daisy Chien  ;  Gerhard Laub 
Citation
 Journal of the Korean Radiologist Society (대한방사선의학회지), Vol.39(5) : 825-830, 1998 
Journal Title
 Journal of the Korean Radiologist Society (대한방사선의학회지) 
ISSN
 0301-2867 
Issue Date
1998
Keywords
Carotid arteries, MR ; Magnetic resonance (MR), contrast enhancement ; Magnetic resonance (MR), vascular studies
Abstract
Purpose : To investigate the optimal delay and acquisition time for discrimination of the arterial from thevenous phase in ultrafast 3D contrast-enhanced MR angiography of the carotid artery. Materials and Methods : Wereviewed the MR angiographic findings of 233 patients in whom carotid stenosis and cerebrovascular disease weresuspected. On the basis of delay and acquisition time they were divided into four groups. In the first three,contrast material was injected manually, and after the optimal time, mechanical injection was used for the lastgroup. On the basis of signal intensity of the carotid artery, image quality was graded in four steps.Discrimination of the arterial from the venous phase was graded in three steps, based on the degree of venousenhancement. Results : The best grade of image quality was 70% in the first group, 85% in the second, and 95% inthe third. In discrimination of the arterial-venous phase, the most definite grade was 50% in the first group, 62%in the second, and 75% in the third. Between manual and mechanical injection groups, there was no significantdifference in image quality and discrimination of the arterial-venous phase. Conclusion: These results suggestthat for ultrafast 3D contrast-enhanced MR angiography of the carotid artery, with manual injection of contrastmaterial, 8-second delay time and 7-second acqusistion time are optimal.
Files in This Item:
T199801418.pdf Download
DOI
10.3348/jkrs.1998.39.5.825
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
Chung, Tae Sub(정태섭)
Joo, Jin Yang(주진양)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176465
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