ABSTRACT
Objective To evaluate the diagnostic value of transcranial color duplex sonography for vertebrobasilar arterial insufficiency (VBI). Methods Transcranial color duplex sonography was performed on 30 healthy controls and 30 VBI patients confirmed clinically to examine the flow velocities and wave form parameters of the main supra and infra tentorial basal cerebral arteries. The anterior, middle, and posterior cerebral arteries on either side of the cranium and the vertebrobasilar system were observed using a 2.0 MHz transducer of a computed sonographic system. Results The vertebral artery system resistance index and pulsitive index were significantly higher in VBI patients than those in the controls ( P
ABSTRACT
Objective To evaluate the reliability of transcranial color duplex sonography(TCCD) in the detection of stenosis of the middle cerebral artery(MCA).Method 168 patients with cerebrovascular di sease were underwent both cerebral angiography and TCCD examination.Result 18 stenosis of the MCA were diagnosed by angiography, 15 of the 18 stenosis were detected by TCCD. But 2 MCA stenosis diagnosed by TCCD were not proved by angiography. TCCD diagnosed MCA stenosis with sensitivity(83%) and specificity(88%) respectively.Conclusion MCA stenosis diagnosed by TCCD was better than by transcranial Doppler(TCD).