Contrast Enhanced Cerebral MR Venography: Comparison between Arterial and Venous Triggering Methods.
10.13104/jksmrm.2012.16.2.152
- Author:
Minji JANG
1
;
Hyun Seok CHOI
;
So Lyung JUNG
;
Kook Jin AHN
;
Bum Soo KIM
Author Information
1. Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Korea. bumrad@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Contrast-enhanced MR angiography;
Cerebral Vein;
Contrast enhanced cerebral MR venography;
Comparison between arterial and venous triggering methods
- MeSH:
Carotid Artery, Internal;
Caves;
Cerebral Veins;
Ear;
Hand;
Humans;
Superior Sagittal Sinus
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2012;16(2):152-158
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To compare the arterial and venous detection sites of triggering methods in contrast-enhanced-MR-venography (CE-MRV) for the evaluation of intracranial venous system. MATERIALS AND METHODS: 41 healthy patients underwent CE-MRV with autotriggering at either the cavernous segment of internal carotid artery with an inserted time-delay of 6 seconds (n = 20) or the superior sagittal sinus without any time-delay (n = 21). 0.1 mmol/kg gadolinium-based contrast material (Magnevist(R), Schering, Germany) was intravenously injected by hand injection. A sagittal fast-spoiled-gradient-echo-sequence ranging from one ear to the other was performed (TR/TE5.2/1.5, Matrix 310x310, 124 sections in the 15-cm-thick volume). 17 predefined venous structures were evaluated on all venograms by two neuroradiologists and defined as completely visible, partially visible, or none visible. RESULTS: The rate of completely visible structures were 272 out of 323 (84%) in the arterial triggering CE-MRV and 310 out of 340 (91%) in the venous triggering CE-MRV. The venous triggering CE-MRV demonstrated an overall superior visualization of the cerebral veins than the arterial triggering CE-MRV (Fisher exact test, p < 0.006). CONCLUSION: CE-MRV using venous autotriggering method provides higher-quality images of the intracranial venous structures compared to that of arterial.
