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ID 52794
フルテキストURL
著者
Itami, Hisakazu Okayama Univ, Dept Neurol Surg, Grad Sch Med Dent & Pharmaceut Sci
Tokunaga, Koji Okayama Univ, Dept Neurol Surg, Grad Sch Med Dent & Pharmaceut Sci
Okuma, Yu Okayama Univ, Dept Neurol Surg, Grad Sch Med Dent & Pharmaceut Sci
Hishikawa, Tomohito Okayama Univ, Dept Neurol Surg, Grad Sch Med Dent & Pharmaceut Sci
Sugiu, Kenji Okayama Univ, Dept Neurol Surg, Grad Sch Med Dent & Pharmaceut Sci
Ida, Kentaro Okayama Univ, Dept Radiol, Grad Sch Med Dent & Pharmaceut Sci
Date, Isao Okayama Univ, Dept Neurol Surg, Grad Sch Med Dent & Pharmaceut Sci
抄録
Although self-expanding carotid stents may dilate gradually, the degrees of residual stenosis have been quantified by the NASCET criteria, which is too simple to reflect the configuration of the stented artery. We measured the volumes of the stent lumens chronologically by 3D-CT in patients after carotid artery stenting (CAS), and analyzed the correlations between the volume change and medical factors. Fourteen patients with carotid artery stenosis were treated using self-expanding, open-cell stents. All patients underwent preoperative plaque MRI (magnetization-prepared rapid acquisition gradient-echo, MPRAGE) and chronological 3D-CT examinations of their stents immediately after their placement and 1 day, 1 week, and 1 month after the procedure. The volume of the stent lumen was measured using a 3D workstation. The correlations between stent volume and various factors including the presence of underlying diseases, plaque characteristics, and the results of the CAS procedure were analyzed. Stent volume gradually increased in each case and had increased by 1.04-1.55 (mean, 1.25)-fold at 1 postoperative month. The presence of underlying medical diseases, plaque length, the degree of residual stenosis immediately after CAS, and plaque calcification did not have an impact on the change in stent volume. On the other hand, the stent volume increase was significantly larger in the patients with vulnerable plaques that demonstrated high MPRAGE signal intensity (P < 0.05). A 3D-CT examination is useful for precisely measuring stent volume. Self-expanding stents in carotid arteries containing vulnerable plaques expand significantly more than those without such plaques in a follow-up period.
キーワード
Carotid artery stenting
Carotid stenosis
Plaque MRI
3D-CT
発行日
2013-09
出版物タイトル
Neuroradiology
55巻
9号
開始ページ
1153
終了ページ
1160
ISSN
0028-3940
資料タイプ
学術雑誌論文
関連URL
http://ousar.lib.okayama-u.ac.jp/metadata/52517
言語
English
OAI-PMH Set
岡山大学
論文のバージョン
author
査読
有り
DOI
Web of Sience KeyUT