transcranial Doppler
Transcranial Doppler Ultrasonography to Prevent Cerebrovascular Accident in Children with Sickle Cell Disease
... The time required for the Transcranial Doppler examination to be repeated will depend on the result obtained. If the initial TCD is normal (TAMMX < 170 cm/s), follow-up should be performed annually; If ...
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Transcranial Doppler sonographic monitoring during cerebral aneurysm embolization: a preliminary report
... The endovascular treatment of intracranial aneu- rysms with Guglielmi detachable coils (GDCs) is an interventional technique that has been shown to be as safe and effective as the standard surgical approach in selected ...
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The Effect of Contrast Material on Transcranial Doppler Evaluation of Normal Middle Cerebral Artery Peak Systolic Velocity
... Transcranial Doppler sonography is a noninvasive, portable method for evaluating intracranial hemo- ...Similarly, transcranial Doppler sonog- raphy may also be used to evaluate other entities ...
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Transcranial doppler ultrasound to assess cerebrovascular reactivity: reliability, reproducibility and effect of posture
... Transcranial Doppler ultrasound (TCD) allows measurement of blood flow velocities in the intracranial vessels, and can be used to assess cerebral vasodilator responses to a hypercapnic ...
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Sickle Cell Disease: Reference Values and Interhemispheric Differences of Nonimaging Transcranial Doppler Blood Flow Parameters
... flow Doppler velocities between sides may suggest that TCD re- cordings are reliable indicators of a balanced hemodynamic ...of transcranial Doppler mean blood flow velocity in centimeters per second ...
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Assessment: Transcranial Doppler ultrasonography: [RETIRED]Report of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology*
... Abstract—Objective: To review the use of transcranial Doppler ultrasonography (TCD) and transcranial color-coded sonography (TCCS) for diagnosis. Methods: The authors searched the literature for ...
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Importance of Angle Correction in the Measurement of Blood Flow Velocity with Transcranial Doppler Sonography
... Transcranial Doppler (TCD) sonography enables measurement of flow velocities in intracranial ar- teries (1, 2). A major limitation of the method is the sonographer’s inability to visualize the artery being ...
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Investigation of ischemic and demyelinating lesions by cerebral vasoreactivity based on transcranial Doppler sonography: a comparative study
... group. Transcranial Doppler sonography was undertaken in all subjects to calculate the mean flow velocity (MFV) of the right middle cerebral artery (MCA) and, after a breath-holding (BH) maneuver, the ...
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Effects of fasting during Ramadan on cerebrovascular hemodynamics: A transcranial Doppler study
... Hence, we decided to determine whether Islamic fasting which causes hemodynamic and metabolic blood changes has any significant effect on brain hemodynamics. According to the literature review most of the previous ...
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Association between two distinct executive tasks in schizophrenia: a functional transcranial Doppler sonography study
... Functional transcranial Doppler sonography (fTCD) has been shown to detect specific alterations in MFV during the WCST [10,12,13], the Tower of Hanoi (TOH) [12] and the SOC ...
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Point-of-care transcranial Doppler by intensivists
... investigations. Transcranial color-coded sonography and two-dimensional transcranial Doppler imaging of the brain have the potential to be a middle ground to bridge this gap for certain ...
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A Hybrid Brain-Computer Interface Based on Electroencephalography and Functional Transcranial Doppler Ultrasound
... electrical noise as well as electromyography artifacts [41]. However, as mentioned earlier, fNIRS has a relatively slow response [42] and is difficult to setup as it requires at least 20 sensors for data acquisition ...
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Diagnostic Accuracy of Transcranial Doppler for Brain Death Confirmation: Systematic Review and Meta Analysis
... We searched PubMed, Scopus, and the Cochrane Central data bases for all published studies by using the terms “transcranial Doppler,” “cerebral circulatory arrest,” and “brain death.” Three reviewers ...
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Original Article The value of monitoring transcranial Doppler ultrasonography combined with electroencephalogram detection in carotid endarterectomy
... Abstract: Objective: To evaluate the value of monitoring transcranial Doppler ultrasonography (TCD) combined with electroencephalogram (EEG) detection in carotid endarterectomy. Methods: A total of 73 ...
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Role of serum biomarkers and transcranial Doppler in predicting cerebral vasospasm after aneurysmal subarachnoid hemorrhage
... Background: Aneurysmal subarachnoid hemorrhage (aSAH) can have serious consequences related to vasospasm and delayed cerebral ischemia (DCI). Serum biomarkers have emerged as a promising assessment tool to facilitate ...
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Role of Transcranial Doppler Sonography in Diagnosis of Brain Death: A Single Center Study
... Background: Diagnosis of brain death relies on clinical and electroencephalographic (EEG) criteria. Waiting for 24 hours is mandatory to make definitive diagnosis of the condition in the Iranian protocol. Although it has ...
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Ischemia after Carotid Endarterectomy: Comparison between Transcranial Doppler Sonography and Diffusion Weighted MR Imaging
... which transcranial Doppler sonography (TCD) was used intraoperatively to detect mi- croembolic signals have revealed a high prevalence of such signals but a low rate of perioperative ...
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Transcranial Doppler ultrasound in the ICU: it is not all sunshine and rainbows
... 7. Alexandrov AV, Sloan MA, Wong LK, Douville C, Razumovsky AY, Koroshetz WJ, Kaps M, Tegeler CH, American Society of Neuroimaging Practice Guidelines Committee (2007) Practice standards for transcranial ...
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A comparison of transcranial Doppler with near infrared spectroscopy and indocyanine green during hemorrhagic shock: a prospective experimental study
... have been described [4]. Near infrared spectroscopy (NIRS) is a non-invasive technique capable of detecting changes in cerebral oxygenation and cerebral blood volume continuously [5]. NIRS also enables detection of the ...
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Transcranial Doppler measurements in migraine and nitroglycerin headache
... Transcranial Doppler (TCD) has often been used to inves- tigate cerebral blood flow during migraine headache. The mechanism underlying the pathogenesis of migraine is not well understood and multiple ...
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