Acta clinica Croatica, Vol. 44 No. 1, 2005.
Case report
Microembolus Detection by Transcranial Doppler Sonography . Technical and Clinical Aspects
Vlasta Vuković
Arijana Lovrenčić-Huzjan
Vida Demarin
Abstract
Transcranial Doppler can detect microembolic signals which are characterized by unidirectional high intensity increase, short duration, random occurrence, producing a "whistling" sound. Microembolic signals have been proven to represent solid or gaseous particles within the blood flow. Microemboli have been detected in a number of clinical settings: carotid artery stenosis, aortic arch plaques, atrial fibrillation, myocardial infarction, prosthetic heart valves, patent foramen ovale, valvular stenosis, during invasive procedures (angiography, percutaneous transluminal angioplasty), surgery (carotid, cardiopulmonary bypass, orthopedic), and in certain systemic diseases. Despite numerous studies performed so far, clinical significance of microembolic signals is still unclear. This article provides an
overview of the development and current state of technical and clinical aspects of microembolus detection.
Keywords
Brain - physiopathology; Brain - pathology; Intracranial embolism - physiopathology; Intracranial embolism - complications; Intracranial embolism - ultrasonography
Hrčak ID:
14239
URI
Publication date:
3.3.2005.
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