Edina Nagy-Baló, Diana Tint, Marcell Clemens, Ildikó Beke, Katalin Réka Kovács, László Isolation: A Comparison of Two Ablation Techniques Transcranial Measurement of Cerebral Microembolic Signals During Pulmonary Vein Print ISSN: 1941-3149. Online ISSN: 1941-3084 Copyright © 2013 American Heart Association, Inc. All rights reserved. Avenue, Dallas, TX 75231 is published by the American Heart As...

The aim of this work was the definition of a method devoted to the automated recognition of different composition of cerebral microemboli. The developed diagnostic procedure made use of a feature-based analysis of ultrasonographic images containing the characteristic microembolic signals. The images were acquired with a transcranial Doppler and classified using a hierarchical neural network. Th...

s: Greber C, Karapanayiotides T, Ruchat P, Kemény V, Piechowski-Jozwiak B, Despland PA, Bogousslavsky J, Devuyst G. The cognitive impact ofcarotid endarterectomy: benefit and for whom? Cerebrovasc Dis 2003;16(suppl4):42. Karapanayiotides T, Ruchat P, Darbellay G, Kemény V, Piechowski-Jozwiak B, Vesin JM, Despland PA, Bogousslavsky J, Devuyst G. What is thenature and clinical...

BACKGROUND AND PURPOSE High-intensity transient signals (HITS) detected by transcranial Doppler ultrasonography correspond to microemboli in intracranial arteries. The purpose of this study was to develop new diagnostic criteria for the differentiation of these microembolic signals from artifact, based on a high-resolution analysis of Doppler power spectra in an in vitro model. METHODS Two hu...

Robust detection of the smallest circulating cerebral microemboli is an efficient way of preventing strokes, which is second cause of mortality worldwide. Transcranial Doppler ultrasound is widely considered the most convenient system for the detection of microemboli. The most common standard detection is achieved through the Doppler energy signal and depends on an empirically set constant thre...

The purpose of this study was to reveal the cause of frequency modulation (FM) present in microembolic Doppler ultrasound signals. This novel explanation should help the development of sensitive microembolus discrimination techniques. We suggest that the frequency modulation detected is caused by the ultrasonic radiation force (URF) acting directly on microemboli. The frequency modulation and t...

BACKGROUND AND PURPOSE Moyamoya disease (MMD) is a unique cerebrovascular disease characterized by the progressive stenosis of large intracranial arteries and a hazy network of basal collaterals, called moyamoya vessels. Although hemodynamic studies have been applied in MMD patients, the mechanisms of stroke in MMD are still unclear. The present study evaluated the infarct pattern and collatera...