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Utility of noncontrast-enhanced time-resolved four-dimensional MR angiography with a vessel-selective technique for intracranial arteriovenous malformations

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Title: Utility of noncontrast-enhanced time-resolved four-dimensional MR angiography with a vessel-selective technique for intracranial arteriovenous malformations
Authors: Fujima, Noriyuki Browse this author →KAKEN DB
Osanai, Toshiya Browse this author
Shimizu, Yukie Browse this author
Yoshida, Atsushi Browse this author
Harada, Taisuke Browse this author
Nakayama, Naoki Browse this author →KAKEN DB
Kudo, Kohsuke Browse this author →KAKEN DB
Houkin, Kiyohiro Browse this author →KAKEN DB
Shirato, Hiroki Browse this author →KAKEN DB
Keywords: arteriovenous malformation
arterial spin labeling
4D-MRA
vessel-selective technique
Issue Date: Oct-2016
Publisher: Wiley
Journal Title: Journal of magnetic resonance imaging
Volume: 44
Issue: 4
Start Page: 834
End Page: 845
Publisher DOI: 10.1002/jmri.25222
PMID: 26970348
Abstract: Purpose: To evaluate the utility of a vessel-selective four-dimensional (4D) magnetic resonance angiography (MRA) technique for the evaluation of intracranial arteriovenous malformations (AVMs). Materials and Methods: Twelve AVM patients were evaluated retrospectively. Time-of-flight (TOF) MRA, non-vessel-selective 4D-MRA (NS-4D-MRA) and vessel-selective 4D-MRA (VS-4D-MRA) were performed using a 3-tesla MR unit in all patients, and used to identify feeding arteries and draining veins and measure nidus size. The diagnostic accuracy of the three techniques was compared using digital subtraction angiography (DSA). If a multi-feeder was observed, the percentage of blood flow of each feeding artery to the entire nidus was evaluated, and compared to the DSA findings using the 'error value', defined as the degree of overestimation of the blood flow. All imaging findings were assessed by two neuroradiologists. Results: In both raters, the detectability of feeding arteries by VS-4D-MRA (12 and 11 patients) was significantly higher than those of TOF-MRA (7 and 6 patients) and NS-4D-MRA (8 and 7 patients) (p<0.016, respectively). The detectability of drainer veins by TOF-MRA (10 and 10 patients) was significantly higher than that of VS-4D-MRA (7 and 6 patients). In the percentage of the blood flow of each feed artery to the entire nidus, the DSA findings (error value; 27.1 ± 5.7) indicated overestimations of the blood flow compared to the VS-4D-MRA (error value; 7.1 ± 3.9) (p<0.001). Conclusions: VS-4D-MRA was shown to be a useful technique for the evaluation of intracranial AVMs, especially for detecting feed arteries and estimating details of the nidus structure.
Rights: This is the peer reviewed version of the following article: Fujima, N., Osanai, T., Shimizu, Y., Yoshida, A., Harada, T., Nakayama, N., Kudo, K., Houkin, K. and Shirato, H. (2016), Utility of noncontrast-enhanced time-resolved four-dimensional MR angiography with a vessel-selective technique for intracranial arteriovenous malformations. J. Magn. Reson. Imaging, 44: 834–845, which has been published in final form at http://dx.doi.org/10.1002/jmri.25222. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Type: article (author version)
URI: http://hdl.handle.net/2115/67227
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
国際連携研究教育局 : GI-CoRE (Global Institution for Collaborative Research and Education : GI-CoRE) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤間 憲幸

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