経頭蓋超音波ドプラ法による脳循環の評価(第1報) ： 脳血管造影との対比

Abstract

This study was undertaken to determine whether transcranial Doppler arteriography (TCDA) was useful in the diagnosis of cerebrovascular disorders. Intracranial hemodynamics of the basal cerebral arteries were evaluated by TCDA in 161 patients who underwent conventional cerebral angiography : 64 cases showed ischemic cerebrovascular disease while 97 showed normal findings on both cerebral angiography and brain CT. The basilar artery was insonated in every patient on TCDA ; of the 161 patients, the middle cerebral artery was detectable in 150 by transtemporal approach. Of the 32 patients evaluated for occlusion or stenosis by cerebral angiography, flow velocity mapping of the basal cerebral artery was made in 26, and TCDA indicated the presence of ischemic disease in 23. These results indicate that TCDA is useful in the evaluation of patients with ischemic cerebrovascular disease.