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タイトル: | Clinical evaluation of time-of-flight MR angiography with sparse undersampling and iterative reconstruction for cerebral aneurysms |
著者: | Fushimi, Yasutaka https://orcid.org/0000-0002-1982-3168 (unconfirmed) Okada, Tomohisa https://orcid.org/0000-0003-2312-5677 (unconfirmed) Kikuchi, Takayuki Yamamoto, Akira https://orcid.org/0000-0002-8894-3622 (unconfirmed) Okada, Tsutomu Yamamoto, Takayuki Schmidt, Michaela Yoshida, Kazumichi https://orcid.org/0000-0002-8898-079X (unconfirmed) Miyamoto, Susumu Togashi, Kaori |
著者名の別形: | 伏見, 育崇 岡田, 知久 菊池, 隆幸 山本, 憲 岡田, 務 吉田, 和道 宮本, 享 富樫, かおり |
キーワード: | cerebral aneurysm compressed sensing parallel imaging time‐of‐flight MR angiography |
発行日: | Nov-2017 |
出版者: | Wiley |
誌名: | NMR in biomedicine |
巻: | 30 |
号: | 11 |
論文番号: | e3774 |
抄録: | Compressed sensing (CS) MRI has just been introduced to research areas as an innovative approach to accelerate MRI. CS is expected to achieve higher k‐space undersampling by exploiting the underlying sparsity in an appropriate transform domain. MR angiography (MRA) provides high spatial resolution information on arteries; however, a relatively long acquisition time is necessary to cover a wide volume. Reduction of acquisition time by CS for time‐of‐flight (TOF) MR angiography (Sparse‐TOF) is beneficial in clinical examinations; therefore, the clinical validity of Sparse‐TOF needs to be investigated. The aim of this study was to compare the diagnostic capability of TOF MRA between parallel imaging (PI)‐TOF with an acceleration factor of 3 (annotated as 3×) and Sparse‐TOF (3× and 5×) in patients with cerebral aneurysms. PI‐TOF (3×) and Sparse‐TOF (3× and 5×) imaging were performed in 20 patients using a 3 T MRI system. Aneurysms in PI‐TOF (3×) and Sparse‐TOF (3× and 5×) were blindly rated as visible or scarcely visible by neuroradiologists. The neck, height and width of aneurysms were also measured. Twenty‐six aneurysms were visualized and rated as visible in PI‐TOF (3×) and Sparse‐TOF (3× and 5×), with excellent agreement between two raters. No significant differences were found in measured neck, height or width of aneurysms among them. Sparse‐TOF (3× and 5×) were acquired and reconstructed within 6 min, and cerebral aneurysms were visible in both of them with equivalent quality to PI‐TOF (3×). Sparse‐TOF (5×) is a good alternative to PI‐TOF (3×) to visualize cerebral aneurysms. |
著作権等: | This is the peer reviewed version of the following article: [Yasutaka Fushimi etc. Clinical evaluation of time‐of‐flight MR angiography with sparse undersampling and iterative reconstruction for cerebral aneurysms. NMR in biomedicine, 30(11) e3774], which has been published in final form at https://doi.org/10.1002/nbm.3774. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. The full-text file will be made open to the public on 16 October 2018 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/235677 |
DOI(出版社版): | 10.1002/nbm.3774 |
PubMed ID: | 28796397 |
出現コレクション: | 学術雑誌掲載論文等 |
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