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Transcranial Color-Coded Real-Time Sonographic Criteria for Occlusion of the Middle Cerebral Artery in Acute Ischemic Stroke

Toshiyasu Ogata, Kazumi Kimura, Makoto Nakajima, Kouichi Ikeno, Hiroaki Naritomi and Kazuo Minematsu
American Journal of Neuroradiology November 2004, 25 (10) 1680-1684;
Toshiyasu Ogata
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Kazumi Kimura
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Makoto Nakajima
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Kouichi Ikeno
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Hiroaki Naritomi
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Kazuo Minematsu
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    Fig 1.

    Left anteroposterior carotid angiograms in representative cases evaluated with cerebral angiography and TCCS. Y axis is represented blood flow velocity (cm/s). Left image shows occlusion of the horizontal portion of the left MCA (a). Occlusion site overlies the external carotid artery branch. Doppler waveforms of the left (b) and right (c) MCAs show EDVs of 14.5 and 49.9 cm/s, respectively. Right image shows occlusion of the branch in the left MCA (a). Doppler waveforms of the left (b) and right (c) MCAs show EDVs of 18.2 and 44.6 cm/s, respectively.

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    Fig 2.

    Scattergrams. Top, Mean EDVs (±2 SDs) for the control, MO, and MB groups are 40.5 ± 11.5, 12.2 ± 3.6, and 19.6 ± 4.8, respectively (P < .001, Scheffé test). Bottom, Mean end-diastolic ratios (±2 SDs) for the control, MO, and MB groups are 1.2 ± 0.1, 4.2 ± 1.5, and 1.8 ± 0.5, respectively (P < .001, Scheffé test).

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    Fig 3.

    Sensitivity-specificity curves.

    A, Predicting MO or MB by EDV. Optimal threshold value for EDV is 25 cm/s.

    B, Differentiating MO from MB by the end-diastolic ratio. Optimal threshold value for the ratio is 2.7.

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    Fig 4.

    Algorithm for diagnosing MO and MB by using the EDV and end-diastolic ratio on TCCS.

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American Journal of Neuroradiology: 25 (10)
American Journal of Neuroradiology
Vol. 25, Issue 10
1 Nov 2004
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Cite this article
Toshiyasu Ogata, Kazumi Kimura, Makoto Nakajima, Kouichi Ikeno, Hiroaki Naritomi, Kazuo Minematsu
Transcranial Color-Coded Real-Time Sonographic Criteria for Occlusion of the Middle Cerebral Artery in Acute Ischemic Stroke
American Journal of Neuroradiology Nov 2004, 25 (10) 1680-1684;

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Transcranial Color-Coded Real-Time Sonographic Criteria for Occlusion of the Middle Cerebral Artery in Acute Ischemic Stroke
Toshiyasu Ogata, Kazumi Kimura, Makoto Nakajima, Kouichi Ikeno, Hiroaki Naritomi, Kazuo Minematsu
American Journal of Neuroradiology Nov 2004, 25 (10) 1680-1684;
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Cited By...

  • Transcranial Color-Coded Duplex Sonography of the Middle Cerebral Artery: More Than Just the M1 Segment
  • A Case of Recanalized Cardioembolic Stroke: Possible Effect of Transcranial Color-Coded Real-time Sonography on Thrombolytic Therapy
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