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