Embolus Detection and Differentiation Using Multifrequency Transcranial Doppler
نویسندگان
چکیده
منابع مشابه
Embolus differentiation using multifrequency transcranial Doppler.
Embolus Differentiation Using Multifrequency Transcranial Doppler To the Editor: Markus and Punter report disappointing results for differentiation between solid and gaseous emboli using both the default settings of the Embo-Dop multifrequency transcranial Doppler system,1 and the modified criteria recommended by Russell and Brucher.2,3 One reason for this poor performance is a fundamental limi...
متن کاملAutomatic online embolus detection and artifact rejection with the first multifrequency transcranial Doppler.
BACKGROUND AND PURPOSE The goal of this study was to assess the first multifrequency transcranial Doppler system specially developed for online automatic detection of cerebral microemboli. METHODS The multifrequency Doppler instrumentation insonates simultaneously with 2.0- and 2.5-MHz frequencies. The detection threshold for embolus detection used in this study was a relative Doppler energy ...
متن کاملMultifrequency transcranial Doppler for intraoperative automatic detection and characterisation of cerebral microemboli during port-access mitral valve surgery.
In 20 patients (6 male; age 56.5+/-6.4 years; BSA 1.6+/-0.1 m(2)) undergoing port-access mitral valve surgery, automated intraoperative transcranial Doppler was used to monitor absolute amount, side distribution, and type of embolic events during selected phases of the procedure to evaluate the impact of specific surgical manoeuvres on cerebral microembolism. The rate of events per minute was a...
متن کاملTranscranial Doppler Detection of Circulating Cerebral Emboli
Background: The identification of gaseous emboli using Doppler ultrasound was described as early as the 1960s. Recently it has been demonstrated that this method can also detect solid emboli such as thrombi and platelet aggregates. This may make this technology useful in a large number of patients with, or at risk of, embolic stroke. Summary of Review: Emboli appear as short-duration, high-inte...
متن کاملTranscranial doppler detection of fat emboli.
BACKGROUND AND PURPOSE The fat embolism syndrome (FES) is characterized by the simultaneous occurrence of pulmonary and neurological symptoms as well as skin and mucosal petechiae in the setting of long-bone fractures or their surgical repair. Its pathophysiology is poorly understood, and effective treatments are lacking. We present 5 patients with long-bone fractures in whom in vivo microembol...
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ژورنال
عنوان ژورنال: Stroke
سال: 2005
ISSN: 0039-2499,1524-4628
DOI: 10.1161/01.str.0000157956.44063.f2