Transcranial Doppler Ultrasound: Technique and Application
نویسندگان
چکیده
منابع مشابه
Transcranial Doppler ultrasound.
Transcranial Doppler ultrasound allows measurements of blood flow velocity to be made from the basal intracerebral vessels. The major advantages of transcranial Doppler ultrasound are that it is non-invasive, relatively cheap, can be performed with portable machines, allows monitoring for prolonged periods, and has a high temporal resolution making it ideal for studying dynamic cerebrovascular ...
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Magnetic resonance (MR)-guided stereotactic techniques that allow precise in vivo anatomic location have recently been developed (1). Using such a system, we tested the hypothesis that we are insonating from the midpoints of the M 1 segment of the middle cerebral artery and A 1 segment of the anterior cerebral artery during clinical hand-held transcranial Doppler examinations. We also compared ...
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BACKGROUND AND PURPOSE A cardiac right-to-left shunt (RLS) can be identified by transesophageal echocardiography and transcranial Doppler ultrasound (TCD) with contrast agents and a Valsalva maneuver (VM) as a provocation procedure. This article applies the modalities of these tests detailed in previous studies to a large patient cohort and compares 2 contrast agents (saline and Echovist-300). ...
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Doppler devices can provide clinically useful information about blood flow. This paper describes how a pulse-Doppler instrument has been linked to a B-scan machine so that flow patterns in any ultrasonically accessible vessel can be monitored from the skin surface. The same transducer is used for both modes of investigation to enable accurate and reliable positioning of the sample-volume. After...
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In this study, we investigate the feasibility of a BCI based on transcranial Doppler ultrasound (TCD), a medical imaging technique used to monitor cerebral blood flow velocity. We classified the cerebral blood flow velocity changes associated with two mental tasks--a word generation task, and a mental rotation task. Cerebral blood flow velocity was measured simultaneously within the left and ri...
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ژورنال
عنوان ژورنال: Seminars in Neurology
سال: 2013
ISSN: 0271-8235,1098-9021
DOI: 10.1055/s-0032-1331812