Usefulness of 16-Slice Multislice Spiral Computed Tomography for Follow-up Study of Coronary Stent Implantation

• Watanabe Makoto

  First Department of Medicine, Nara Medical University

• Uemura Shiro

  First Department of Medicine, Nara Medical University

• Iwama Hajime

  First Department of Medicine, Nara Medical University

• Okayama Satoshi

  First Department of Medicine, Nara Medical University

• Takeda Yukiji

  First Department of Medicine, Nara Medical University

• Kawata Hiroyuki

  First Department of Medicine, Nara Medical University

• Horii Manabu

  First Department of Medicine, Nara Medical University

• Nakajima Tamio

  First Department of Medicine, Nara Medical University

• Hirohashi Shinji

  Department of Radiology, Nara Medical University

• Kichikawa Kimihiko

  Department of Radiology, Nara Medical University

• Ookura Akira

  Department of Radiology, Kokuho Central Hospital

• Saito Yoshihiko

  First Department of Medicine, Nara Medical University

抄録

Background Although multislice spiral computed tomography (MSCT) is a promising technique for non-invasive coronary angiography, its usefulness in patients with stent implantation remains unclear. The aim of the present study was to compare the usefulness of MSCT with that of invasive coronary angiography for evaluating coronary stent patency. Methods and Results Thirty-one patients were enrolled after coronary stent implantation. Sixteen-slice MSCT scans were performed (39.0±21.8 days) before follow-up coronary angiography. After assigning an image score based on luminal visibility (1= poor, 2= fair, 3= good), factors determing image quality were analyzed. Among 42 implanted stents, 33 (78%) were assigned an image score of 3, 2 (5%) a score of 2, and 7 (17%) a score of 1. Image scores among stents with diameters ≥3.5 mm were significantly (p<0.05) higher than among smaller stents (≤3.0 mm). Stent strut thickness did not affect image quality, but coronary calcification significantly (p<0.01) hampered the image quality. After excluding 7 stents with image scores of 1, the sensitivity, specificity, positive and negative predictive values of MSCT to identify patent stents were 83%, 90%, 63% and 96%, respectively. Conclusions MSCT can provide useful and valuable clinical information for assessing stent patency during the follow-up period when patients are treated with relatively large diameter coronary stents. (Circ J 2006; 70: 691 -697)<br>

収録刊行物

• Circulation Journal

  Circulation Journal 70 (6), 691-697, 2006

  一般社団法人 日本循環器学会

キーワード

• Coronary artery disease
• Coronary stent
• Multislice spiral computed tomography

詳細情報

• CRID: 1390282680082259328
• NII論文ID: 110004750144
• NII書誌ID: AA11591968
• DOI: 10.1253/circj.70.691
• ISSN: 13474820
• ISSN: 13469843
• Web Site: http://www.jstage.jst.go.jp/article/circj/70/6/70_6_691/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2007115756
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
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