Silent MRA: arterial spin labeling magnetic resonant angiography with ultra-short time echo assessing cerebral arteriovenous malformation

Nobuhiko Arai, Takenori Akiyama, Kazuhiro Fujiwara, Kazunari Koike, Satoshi Takahashi, Takashi Horiguchi, Masahiro Jinzaki, Kazunari Yoshida

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Purpose: MR angiography using the silent MR angiography algorithm (silent MRA), which combines arterial spin labeling and an ultrashort time echo, has not been used for the evaluation of cerebral arteriovenous malformations (CAVMs). We aimed to determine the usefulness of silent MRA for the evaluation of CAVMs. Methods: Twenty-nine CAVMs of 28 consecutive patients diagnosed by 4D CT angiography or digital subtraction angiography, who underwent both time-of-flight (TOF) MRA and silent MRA, were enrolled. Two observers independently assessed the TOF-MRA and silent MRA images of CAVMs. Micro AVM was defined as AVM with a nidus diameter less than 10 mm. The detection rate, visualization of the components, and accuracy of Spetzler–Martin grade were evaluated with statistical software R. Results: For all 29 CAVMs, 23 (79%) lesions were detected for TOF-MRA and all for silent MRA. Of 10 micro AVMs, only 4 (40%) lesions were detectable on TOF-MRA and all (100%) on silent MRA. The visibility of the nidus and drainer was significantly better for silent MRA than TOF-MRA (p < 0.001), while there was no significant difference in the feeder between the two sequences. The accuracy rates of the Spetzler–Martin grade for the TOF and silent MRA were 38% (11/29) and 79.3% (23/29), respectively (p < 0.001). Conclusions: Silent MRA is useful for evaluating CAVM components and detecting micro AVM.

本文言語English
ページ(範囲)455-461
ページ数7
ジャーナルNeuroradiology
62
4
DOI
出版ステータスPublished - 2020 4月 1

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング
  • 臨床神経学
  • 循環器および心血管医学

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