scholarly journals Transcranial Doppler ultrasound to assess cerebrovascular reactivity: reliability, reproducibility and effect of posture

PeerJ ◽  
2013 ◽  
Vol 1 ◽  
pp. e65 ◽  
Author(s):  
Michelle N. McDonnell ◽  
Narelle M. Berry ◽  
Mark A. Cutting ◽  
Hannah A. Keage ◽  
Jonathan D. Buckley ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Transcranial Doppler ◽  
Transcranial Doppler Ultrasound ◽  
Cerebrovascular Reactivity

Impaired transcranial Doppler ultrasound cerebrovascular reactivity before carotid intervention is not predictive of a subsequent ischaemic event

2008 ◽  
Vol 12 (1) ◽  
pp. 11-15
Author(s):  
George Kwok-Chu Wong ◽  
Stephanie Chi-Ping Ng ◽  
Matthew Tak-Vai Chan ◽  
David Tin-Fung Sun ◽  
Wynnie Wai-Man Lam ◽  
...  
Keyword(s):  
Doppler Ultrasound ◽  
Transcranial Doppler ◽  
Transcranial Doppler Ultrasound ◽  
Cerebrovascular Reactivity ◽  
Ischaemic Event

Cerebrovascular reactivity assessed by transcranial Doppler ultrasound in sport-related concussion: a systematic review

2014 ◽  
Vol 49 (16) ◽  
pp. 1050-1055 ◽  
Author(s):  
Andrew J Gardner ◽  
Can Ozan Tan ◽  
Philip N Ainslie ◽  
Paul van Donkelaar ◽  
Peter Stanwell ◽  
...  
Keyword(s):  
Systematic Review ◽  
Doppler Ultrasound ◽  
Transcranial Doppler ◽  
Transcranial Doppler Ultrasound ◽  
Cerebrovascular Reactivity

Cerebrovascular Reactivity in Migraineurs as Measured by Transcranial Doppler

Cephalalgia ◽  
1990 ◽  
Vol 10 (2) ◽  
pp. 95-99 ◽  
Author(s):  
T Darrell Thomas ◽  
Gary J Harpold ◽  
B Todd Troost
Keyword(s):  
Blood Flow ◽  
Middle Cerebral Artery ◽  
Flow Velocity ◽  
Doppler Ultrasound ◽  
Cerebral Artery ◽  
Transcranial Doppler ◽  
Blood Flow Velocity ◽  
Transcranial Doppler Ultrasound ◽  
Cerebrovascular Reactivity ◽  
Artery Blood Flow

Transcranial Doppler ultrasound is a relatively new diagnostic modality which allows the non-invasive assessment of intracranial circulation. A total of 10 migraine patients were studied and compared to healthy controls without headaches. Migraineurs during the headache-free interval demonstrated excessive cerebrovascular reactivity to CO2, evidenced by an increase in middle cerebral artery blood flow velocity of 47% ± 15% compared to 28% ± 14% in controls ( p = 0.026). Differences between the two study groups revealed no significant decrease in middle cerebral artery blood flow velocity with hypocapnia. However, the differences between middle cerebral artery blood flow velocity during hyperventilation and CO2 inhalation were significantly different ( p = 0.004) comparing migraineurs and controls. Instability of the baseline blood flow velocities was also noted in migraineurs during the interictal period. Characteristics which may allow differentiation of migraineurs from other headache populations could possibly be obtained from transcranial Doppler ultrasound flow studies.

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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