Results 191 to 200 of about 11,646 (214)

Transcranial doppler ultrasonography

Journal of neurology, neurosurgery, and psychiatry
Abstract Transcranial Doppler ultrasonography (TCD) is a noninvasive, bedside procedure that can detect blood flow in the proximal cerebral intracranial arteries. TCD has multiple applications, including rapid assessment of anterior circulation blood flow in acute, large-vessel occlusion. For patients with subarachnoid hemorrhage, trends
Michelle P. Lin, Josephine F. Huang
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Transcranial Doppler ultrasonography in intensive care

European Journal of Anaesthesiology, 2008
Transcranial Doppler is an innovative, flexible, accessible tool for the bedside monitoring of static and dynamic cerebral flow and treatment response. Introduced by Rune Aaslid in 1982, it has become indispensable in clinical practice. The main obstacle to ultrasound penetration of the skull is bone. Low frequencies, 1-2 MHz, reduce the attenuation of
RASULO, Francesco Antonio, DE PERI E, LAVINIO A.   +2 more
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Transcranial Doppler Ultrasonography

2019
Abstract Transcranial Doppler (TCD) ultrasonography is a diagnostic technology for ascertaining numerous physiologic and pathologic phenomena by monitoring the direction and velocity of blood flow in intracranial vasculature. It is a noninvasive, point-of-care diagnostic tool that provides continuous and reproducible bedside data without
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Transcranial Doppler ultrasonography in the determination of brain death

Neurosurgery, 1989
Abstract Transcranial Doppler (TCD) ultrasonography was used to perform multiple examinations of 24 patients who sustained cranial injuries, 23 of whom progressed to death. In the 20 of these 23 patients for whom an adequate TCD signal could be obtained, a characteristic reverberating wave form pattern was observed, with an associated ...
A D, Powers, M C, Graeber, R R, Smith
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Principles of Transcranial Doppler Ultrasonography

2020
Transcranial Doppler (TCD) ultrasonography is a non-invasive bedside tool applied to the assessment of cerebral blood flow haemodynamics in major intracranial arteries. TCD allows dynamic monitoring of vessel pulsatility, with a high temporal resolution, and it is relatively inexpensive, repeatable and portable.
Danilo Cardim, Chiara Robba
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Transcranial Doppler Ultrasonography: Year 2000 Update

Journal of Neuroimaging, 2000
In this update, the main clinical applications of transcranial Doppler ultrasonography are reassessed. A specific format for technology assessment, personal experience, and an extensive review of the literature form the basis of the evaluation. The document is approved by the American Society of Neuroimaging and the Neurosonology Research Group of the ...
V L, Babikian, E, Feldmann, L R, Wechsler, D W, Newell, C R, Gomez, U, Bogdahn, L R, Caplan, M P, Spencer, C, Tegeler, E B, Ringelstein, A V, Alexandrov   +10 more
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Transcranial colour Doppler ultrasonography

Rivista di Neuroradiologia, 2001
Transcranial colour Doppler ultrasonography (TCCD), being a non-invasive method is an invaluable source of information on cerebral haemodynamics. It is the blood flow disturbances that often lead to irreversible ischemic lesions, which can then be detected a posteriori with various imaging techniques.
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Transcranial Doppler Ultrasonography With Induction of Anesthesia for Neurosurgery

Journal of Neurosurgical Anesthesiology, 1994
Intracranial hypertension can occur with induction of anesthesia; however, the clinical significance of this is unclear. We used transcranial Doppler (TCD) ultrasonography in neurosurgical patients during induction of anesthesia and endotracheal intubation to assess the incidence of high intracranial pressure (ICP) waveforms and to correlate TCD ...
W A, Kofke, M L, Dong, M, Bloom, R, Policare, J, Janosky, L, Sekhar   +5 more
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Role of Transcranial Doppler Ultrasonography in Cerebrovascular Disease

Recent Patents on CNS Drug Discovery, 2010
Transcranial Doppler ultrasonography (TCD) is the only non-invasive examination that provides a reliable evaluation of intracranial blood flow patterns in real-time, adding physiological information to the anatomical information obtained from other neuroimaging modalities. TCD is relatively cheap, can be performed bedside, and allows monitoring both in
Leonard L L, Yeo, Vijay K, Sharma
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Vascular Dizziness and Transcranial Doppler Ultrasonography

Annals of Otology, Rhinology & Laryngology, 1989
Dizziness as defined herein will include an illusion of motion caused by various degrees of ischemia to the vestibular pathway or its interconnecting pathways. “Syndrome,” such as the lateral medullary syndrome, denotes a macroinfarct, while a microinfarct or an area of incomplete infarct (where there may develop an incomplete degeneration of the ...
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