scholarly journals Functional transcranial Doppler ultrasound for high temporal resolution measurement of lateralization in visual memory and visual search cognitive tasks

2015 ◽  
Author(s):  
B. Hage ◽  
M. Alwatban ◽  
E. Barney ◽  
M. Mills ◽  
M. Dodd ◽  
...  
Keyword(s):  
Visual Search ◽  
Doppler Ultrasound ◽  
Temporal Resolution ◽  
Transcranial Doppler ◽  
Visual Memory ◽  
Transcranial Doppler Ultrasound ◽  
Cognitive Tasks ◽  
High Temporal Resolution ◽  
Resolution Measurement

scholarly journals Assessment of hemodynamic cerebral lateralization during the performance of verbal mnestic tasks with the use of functional transcranial doppler ultrasound

2015 ◽  
Vol 8 (3) ◽  
pp. 62-73
Author(s):  
Yu.V. Mikadze ◽  
M.D. Bogdanova ◽  
E.S. Lysenko ◽  
A.R. Shakhnovich ◽  
S.M. Abuzaid
Keyword(s):  
Doppler Ultrasound ◽  
Transcranial Doppler ◽  
Visual Memory ◽  
Transcranial Doppler Ultrasound ◽  
Dominant Hemisphere ◽  
Cerebral Lateralization ◽  
Preliminary Results ◽  
Non Invasive ◽  
Activity Performance ◽  
Left And Right

There are the preliminary results of the research of interhemispheric asymmetry of cerebral hemodynamics during the performance of auditory-verbal and visual memory tasks with the use of functional transcranial doppler ultrasound (fTCD). The fTCD is considered as a non-invasive and objective method for assessment the dominant hemisphere for verbal functions. The aim of two experiments was to analyze the effect of a) different types of verbal and nonverbal tasks and b) the conditions of the mnestic activity performance (memorize and recognize) on the changes of blood flow velocity in left and right hemispheres in 62 healthy subjects. There are preliminary results of possible application fTCD to identify the dominant hemisphere for speech functions with combination of concrete verbal cognitive tasks and condition of its presentation.

High-Grade Stenosis of a Traumatic Brachiocephalic Pseudoaneurysm and the Change in Cerebral Blood Flow Assessed With Transcranial Doppler Ultrasound

2021 ◽  
pp. 154431672110023
Author(s):  
Winnie Nguyen ◽  
Tammy Albanese ◽  
Vanessa Tran ◽  
Anne Moore ◽  
Laligam Sekhar
Keyword(s):  
Doppler Ultrasound ◽  
Transcranial Doppler ◽  
Transcranial Doppler Ultrasound ◽  
Computed Tomographic Angiography ◽  
Computed Tomographic ◽  
Vertebral Arteries ◽  
Luminal Narrowing ◽  
Basilar Arteries ◽  
The Right ◽  
Tomographic Angiography

This is a case report of a 35-year-old female pedestrian struck by a semi-truck. computed tomographic angiography (CTA) revealed a pseudoaneurysm at the proximal brachiocephalic artery measuring 1.8 cm in cranio-caudal length and 1.2 × 0.6 cm transverse. Just distal to the pseudoaneurysm, there was severe luminal narrowing caused by either a dissection flap or mural thrombus. Due to profound left-sided weakness, transcranial Doppler ultrasound was performed which demonstrated “hesitant” waveforms in the right middle cerebral and right vertebral arteries secondary to proximal obstruction. Hesitant waveforms display mid-systolic velocity deceleration and may also be referred to as the “bunny” waveform. Emboli monitoring of the right middle cerebral and basilar arteries were positive for active embolization

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