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The Egyptian Journal of Neurology, Psychiatry and Neurosurgery
Fig. 1 | The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Fig. 1

From: Comparison between intracranial collaterals and cerebral hemodynamics in patients with extracranial carotid stenosis versus combined extra- and intracranial stenosis using transcranial duplex

Fig. 1

PSV in both groups. Regarding those 30 patients with acute stroke, cerebral hemodynamics were assessed by transcranial Doppler by the assessment of both PSV and EDV in ipsilateral MCAs; in the 15 patients with extracranial stenosis, only one patient (6.67%) showed increased PSV over 160 cm/s, with mean 59.38 ± 22.25, while in 15 patients of both intracranial and extracranial stenosis, also only one patient (6.67%) showed increased PSV in MCA over 160 cm/s with mean 68.133 ± 26.963

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