Results 191 to 200 of about 35,724 (244)

Transcranial Doppler

2016
Transcranial Doppler ultrasonography (TCD) is the only diagnostic modality that provides a reliable evaluation of intracranial blood flow patterns in real-time. The physiological information obtained from TCD is complementary to the anatomical details obtained from other neuroimaging modalities.
Vijay K, Sharma, Ka Sing, Wong, Andrei V, Alexandrov   +2 more
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Transcranial Doppler in Neurosurgery

1993
This chapter describes the use of the transcranial Doppler apparatus in neurosurgery. The principles of Doppler insonation, the techniques of recording and the use of activation techniques is described. The relationship between blood flow and blood velocity is discussed, and the interaction of various pharmacological agents. The establishment of normal
K F, Lindegaard, W, Sorteberg, H, Nornes
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Transcranial Doppler in children

Pediatric Radiology, 2011
Transcranial Doppler US, a non-invasive tool for evaluating the cerebral arteries, has evolved significantly during the last two decades. This review describes the practical procedure, and summarises and illustrates its established and "work-in-progress" indications in children. Indications for a transcranial Doppler US examination include, but are not
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Transcranial Doppler Ultrasonography

Neurosurgery Clinics of North America, 1994
Transcranial Doppler ultrasonography is an extremely useful adjunct in neurosurgical intensive care. Continuous improvements in TCD equipment as well as computer software have improved examination success and also vessel identification. Recent expanding applications of TCD have also allowed the study of disorders of control of the cerebral circulation.
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Advances in transcranial doppler ultrasonography

Current Neurology and Neuroscience Reports, 2008
Transcranial Doppler ultrasonography (TCD) is the only noninvasive real-time neuroimaging modality for the evaluation of characteristics of blood flow in basal intracerebral vessels that adds physiologic information to structural imaging. TCD has been rapidly evolving from a simple noninvasive diagnostic tool to an imaging modality with a broad ...
Georgios, Tsivgoulis, Andrei V, Alexandrov, Michael A, Sloan   +2 more
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Transcranial Doppler Sonography

Archives of Neurology, 1994
Despitegrowing interest and a rapidly expanding literature, the clinical usefulness of transcranial Doppler sonography (TCD) has not been universally accepted. 1 Imaging modalities such as venous digital subtraction angiography and xenon 133 enjoyed similar initial enthusiasm only to be relegated to limited indications or abandoned because of ...
L R, Wechsler, V L, Babikian
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Transcranial Doppler: state of the art

European Journal of Radiology, 1998
Transcranial color Doppler sonography permits the accurate assessment of intracranial arteries. The latest Doppler units, using the color and power techniques, can show even very small flow volumes (1 x 1 mm). Low frequency (2-2.5 MHz) and very focused transducers are used in transcranial color Doppler.
BAZZOCCHI, Massimo, Quaia E, ZUIANI, Chiara, Moroldo M.   +3 more
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Transcranial Doppler in brain death

Neurology, 1987
Transcranial Doppler examinations (TCD) of 24 brain-dead adult patients demonstrated persistent movement of blood within the middle cerebral arteries in 21. The characteristic pattern of Doppler shift frequencies, seen in 14, was a sharply contoured, brief anterograde systolic envelope with reversed diastolic flow.
A H, Ropper, S M, Kehne, L, Wechsler
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Transcranial Doppler in carotid endarterectomy

Journal of Clinical Neuroscience, 2001
To evaluate the role of transcranial Doppler monitoring in reducing the complications of carotid endarterectomy, by analysing: (1) perioperative intracerebral blood flow velocity; (2) embolic load; and (3) effect of Dextran-40 therapy on patient outcome.Retrospective case series.The study cohort consisted of 30 consecutive patients undergoing 32 ...
V G, Dunne, M, Besser, W J, Ma
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Transcranial Doppler In Cerebral Vasospasm

Neurosurgery Clinics of North America, 1990
Transcranial Doppler provides a noninvasive method for recording blood flow velocity (and indirectly, diameter) in the basal cerebral arteries and therefore is especially useful in detecting vasospasm following subarachnoid hemorrhage. Vasospasm most commonly involves the basal arteries, where the changes in vessel diameter will be inversely ...
D W, Newell, H R, Winn
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