Study on intracranial arterial collateral pathways and hemodynamics in patients with internal carotid artery occlusion using transcranial color Doppler ultrasonography
- VernacularTitle:经颅彩色多普勒超声对颈内动脉闭塞患者颅内侧支循环及血供的研究
- Author:
Biao LIU
;
Baozhen ZHAO
;
Yi MU
;
Xiaoyu CHEN
- Publication Type:Journal Article
- Keywords:
Ultrasonography,Doppler,transcranial;
Contrast media;
Carotid artery diseases;
Cerebral arteries
- From:
Chinese Journal of Ultrasonography
1993;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the intracranial arterial collateral blood flow pathways and the changes of hemodynamics. Methods A total of 29 patients with unilateral internal carotid artery occlusion were selected. In these cases, their ophthalmic arteries(OA) and cerebral arteries were observed using transcranial color Doppler ultrasonography (TCCD), color Doppler energy imaging(CDE) and contrast-enhanced color Doppler ultrasonography. Collateral pathways through the ill-lateral OA, anterior and ill-lateral posterior communicating artery(ACoA and PCoA, respectively) were demonstrated by reversal of blood flow in the ipsilateral OA, reversal of blood flow in the ipsilateral A1 segment of the anterior cerebral artery(ACA) or decrease of blood flow velocity in ipsilateral middle cerebral arteries (MCA) during contralateral common carotid artery(CCA) compression and the increase of blood flow velocity in ipsilateral P1 segment of the posterior cerebral artery(PCA) during ipsilateral CCA compression, respectively. Results ①Among 29 cases, bilateral OA of 29 patients(100%) and bilateral MCA, ACA and PCA of 16 patients ( 55.2 %) could be visualized by TCCD and CDE. The other 13 patients( 44.8 %) can be seen clearly only after contrast-enhanced color Doppler ultrasonography. ② There were intracranial arterial collateral blood flow pathways of 29 patients(100%) through OA, 24 patients( 82.7 %) ACoA and 2 patients ( 6.8 %) PCoA, respectively. ③ The blood flow velocity was higher in ill-lateral OA than in contralateral OA, but PI and RI lower( P
