書誌事項
- タイトル別名
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- Usefulness of acceleration time for assessment of stenosis in the extracranial internal carotid artery
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The aim of this study was to investigate the usefulness of acceleration time (AcT) determined by sonography for evaluation of severe stenosis in the internal carotid artery (iCA). We evaluated 127 ICAs and common carotid arteries (CCAs). Linear- and convex-array probes were used for sonographic assessment, and the peak systolic flow velocity (PSV) at the carotid bulb was evaluated by the pulsed Doppler method. The linear-array probe was set in the CCA 2cm above the carotid sinus, and the convex-array probe was set in the ICA 3cm above its origin to measure the Doppler waveform. The Act ratio was calculated as ICA/AcT of the ipsilateral CCA and correlated with the PSV. Simple regression analysis and the receiver operating characteristic curve were used to examine the relationship between the AcT ratio and PSV. There was a significant relationship between the PSV and AcT ratio. Based on the receiver operating characteristic curve, the sensitivity and specificity of the AcT ratio using a cutoff level of 2.0 were 90.0% and 96.6%, respectively, for diagnosis of a PSV exceeding 200cm/s. These results suggest that an AcT ratio of 2.0 reflects a degree of stenosis exceeding 70%.
収録刊行物
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- Neurosonology:神経超音波医学
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Neurosonology:神経超音波医学 22 (2-3), 79-82, 2009
一般社団法人日本脳神経超音波学会
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詳細情報 詳細情報について
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- CRID
- 1390001204419760256
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- NII論文ID
- 10026713093
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- NII書誌ID
- AN10236361
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- ISSN
- 18843336
- 0917074X
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可