The diagnostic value of the resistivity index of the common carotid arteries in severe internal carotid artery stenosis

Autorzy: S. Zarrintan¹, A.B. Shakeri², M. Shakeri-Bavil³ 1 - Department of Neurosurgery, Imam Hospital, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
2 - Department of Radiology, Imam Hospital, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
3 - Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran

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Abstrakt

Duplex ultrasound is currently used both for screening and for preoperative assessment of the carotid arteries and has completely replaced carotid angiography for the latter purpose in many institutions. The study aimed to identify resistivity index abnormalities in the common carotid arteries in patients with severe internal carotid artery stenosis or occlusion over a twelve-month period were studied by duplex ultrasonography. The resistivity index in the common carotid artery was 0.85 ± 0.03 on the stenotic side compared to 0.74 ± 0.04 on the opposite side (p < 0.05). There was no side difference regarding flow velocity. In patients with occluded or severely stenosed internal carotid arteries compensatory vasodilation occurs in cerebral vessels on the same side, and this carotid artery of the opposite side.

(Folia Morphol 2008; 67: 175–178)

Wydane przez: Via Medica
Język: angielski
Profil: anatomia

Tagi: internal carotid artery, common carotid artery, stenosis, duplex sonography, peak systolic velocity,

Rodzaj: Artykuł, Dostęp: Dla wszystkich, Odpłatność: Darmowe