background: the goal of this study was to determine the reliability of tcd in evaluation of vertebrobasilar arteries in comparison with brain mra in patients suffering from acute vertebrobasilar stroke. methods: samples were patients with definite clinical diagnosis of vertebrobasilar stroke. for all patients brain mri, mra and tcd were performed during the first 48 hours of admission. basilar ...

Background and Purpose: In this study we analyzed the value of ultrasound examination for diagnosis of vertebral artery dissection. Methods: The vertebrobasilar arterial system was assessed in 14 patients using transcranial and extracranial pulsed-wave Doppler and duplex sonography. Results: The dissections were verified by angiography (in 1 patient), magnetic resonance imaging (in 5), or both ...

BACKGROUND AND PURPOSE Embolic complications during ultrasound examinations are a rare cause of neurological deficits. The present case documents the occurrence of embolism by a nonobstructive compression maneuver during transcranial Doppler examination, resulting in a minor stroke. CASE DESCRIPTION A 63-year-old man suffered from recurrent transient ischemic attacks. Duplex sonography showed...

Takuo HASHIMOTO, M.D.,Toshinori KANKI,M.D.,Satoshi ABE, M.D. Norio NAKAMURA, M.D. Department. of Neurosurgery, The Jikei University School of Medicine (Received 4 September 1989, Accepted 10 January 1990) Abstract Flow patterns of the velocity measured by transcranial Doppler(TCD) were compared with the changes of intracranial pressure(ICP) in patient with subarachnoid hemorrhage and severe hea...

Background and Purpose—Functional transcranial Doppler ultrasonography (fTCD) can assess event-related changes in cerebral blood flow velocities and, by comparison between sides, can provide a measure of hemispheric perfusional lateralization. It is easily applicable, insensitive to movement artifacts, and can be used in patients with less than perfect cooperation. In the present study we inves...

Transcranial cerebral sonography (TCCS) is a noninvasive technique that allows the clinician to detect abnormal intracranial-inner-ear fluid interactions in terms of nanoliter tympanic membrane displacements. The displacements recorded in TCCS are evoked either by the acoustic stapedius reflex or spontaneous movements generated by intracranial cardiovascular or by respiratory pressure waves tra...

Children with congenital heart disease (CHD) remain at high risk for long-term neurodevelopmental disabilities. Acute neurologic complications, such as seizures, transient ischemic attack, intracranial hemorrhage, and stroke may occur in the setting of cardiac surgery catheterization.