Possibilities and Limitations in Imaging the Intracranial Arteries in the Context of a Contrast-Enhanced Whole-Body Magnetic Resonance Angiographic Screening Protocol at 1.5 Versus 3 Tesla

被引：1

作者：

Buhk, Jan-Hendrik ^{[1
]}

Ries, Thorsten ^{[2
]}

Finck-Wedel, Anna-Katharina ^{[1
]}

Beil, Frank Ulrich ^{[3
]}

Adam, Gerhard ^{[1
]}

Weber, Christoph ^{[1
]}

机构：

[1] Univ Med Ctr Hamburg Eppendorf, Dept Diagnost & Intervent Radiol, D-20246 Hamburg, Germany

[2] Univ Med Ctr Hamburg Eppendorf, Dept Neuroradiol, D-20246 Hamburg, Germany

[3] Univ Med Ctr Hamburg Eppendorf, Dept Internal Med, Med Clin 3, D-20246 Hamburg, Germany

来源：

JOURNAL OF COMPUTER ASSISTED TOMOGRAPHY | 2011年 / 35卷 / 01期

关键词：

whole-body magnetic resonance angiography; atherosclerosis; stroke; MR-ANGIOGRAPHY; INITIAL-EXPERIENCE; OCCLUSIVE DISEASE; STENOSIS; STENT; ATHEROSCLEROSIS; AGREEMENT; WARFARIN; ASPIRIN; COIL;

D O I：

10.1097/RCT.0b013e3181f124d9

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Objective: Evaluation of the diagnostic detectability of the intracranial vasculature on contrast-enhanced whole-body magnetic resonance angiographic (WBMRA) scans at 1.5 versus 3 T. Methods: Twenty-seven patients with hereditary hyperlipidemia participated. Two experienced neuroradiologists scored the image quality regarding the intracranial arteries applying a 5-point scale. Stenoses and other findings were documented. Weighted kappa-statistics were calculated to assess interobserver agreement. Results: Interobserver agreement was very good. Image quality scoring resulted in the following mean values: 3.0 at 1.5 T versus 3.9 at 3 T (P < 0.001). Venous contrast overlay and insufficient anatomic coverage occurred in both groups. Three stenoses were found at both field strengths. Conclusions: Assessment of the intracranial vasculature on WBMRA data is basically feasible; image quality at 3 T seems superior. Shortcomings appear because of venous contamination and insufficient volume coverage. Therefore, adding a dedicated intracranial MRA to a WBMRA protocol would substantially increase diagnostic certainty.

引用

页码：4 / 8

页数：5

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