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Non–Contrast-Enhanced Magnetic Resonance Angiography Using T2-Weighted 3-Dimensional Fat-Suppressed Turbo Spin Echo (SPACE): Diagnostic Performance and Comparison With Contrast-Enhanced Magnetic Resonance Angiography Using Volume Interpolated Breath-Hold Examination in the Detection of Portosystemic and Portohepatic Collaterals

Song, Qiong MD; Zeng, Mengsu PhD, MD; Chen, Caizhong BS; Ma, Jing MD; Yun, Hong MD; Rao, Shengxiang PhD, MD; Yao, Xiuzhong PhD, MD

Journal of Computer Assisted Tomography: November/December 2012 - Volume 36 - Issue 6 - p 675–680
doi: 10.1097/RCT.0b013e31826999df
Cardiothoracic Imaging

Objectives The objective of this study was to evaluate the diagnostic performance of non–contrast-enhanced magnetic resonance angiography (non–CE-MRA) using SPACE (“Sampling Perfection with Application optimized Contrasts using different flip angle Evolutions”) in comparison with CE-MRA using volume interpolated breath-hold examination (VIBE) in the detection of portosystemic and portohepatic collaterals.

Methods Thirty consecutively enrolled cirrhotic patients with suspicion of portosystemic and portohepatic collaterals underwent SPACE followed by VIBE at 1.5-T magnetic resonance imaging scanner. The contrast-to-noise ratio, signal-to-noise ratio, and scores of the portal vein segments and overall image were used to compare the diagnostic performance of SPACE with that of VIBE. The paired Student t test and the Wilcoxon signed rank test were used for statistical analysis.

Results Diagnostic results of SPACE were equivalent to those of VIBE. However, both the signal-to-noise ratio and contrast-to-noise ratio of portal vein segments in the former were better than those in the latter (P < 0.0001), and the scores of displaying the portal vein distal branches in SPACE were higher than those in VIBE (P < 0.05).

Conclusions The SPACE has a comparable ability in demonstrating portosystemic and portohepatic collaterals as well as VIBE does.

From the *Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai; and †Department of Radiology, Zhejiang Provincial People’s Hospital, Hangzhou, People’s Republic of China.

Received for publication May 8, 2012; accepted July 11, 2012.

Reprints: Mengsu Zeng, PhD, MD, Department of Radiology, Zhongshan Hospital, Fudan University, 180 Fenglin Rd, Shanghai, People’s Republic of China 200032 (e-mail: zengmengsu@gmail.com).

The authors have no conflicts of interest to declare.

Copyright © 2012 Wolters Kluwer Health, Inc. All rights reserved.