Results 31 to 40 of about 193,864 (156)

Ultrasound measurement of carotid stenosis: Recommendations from the Spanish Society of Neurosonology

open access: yesNeurología (English Edition), 2013
In Spain, approximately 28% of ischaemic strokes have an atherothrombotic cause, and most are due to carotid stenosis. Ultrasound is the most commonly used technique for diagnosing carotid stenosis.
J. Serena   +5 more
doaj   +1 more source

Autorregulación y vasorreactividad cerebral en el paciente crítico

open access: yesRevista de Educación en Cuidados Críticos, 2022
El fenómeno de la autorregulación cerebral (ARC) fue primero descrito por Lassen en 1959 y por mucho tiempo estuvo confinado en el baúl de las descripciones fisiopatológicas importantes, que difícilmente podían ser evaluadas a la cabecera del paciente ...
Víctor E. Segura-Lemus
doaj   +1 more source

Cuantificación ultrasonográfica de la estenosis carotídea: recomendaciones de la Sociedad Española de Neurosonología

open access: yesNeurología, 2013
Resumen: En España se estima que aproximadamente un 28% de los ictus isquémicos son de etiología aterotrombótica y mayoritariamente se deben a una estenosis carotídea.
J. Serena   +5 more
doaj   +1 more source

Increased pulsatility index supports diagnosis of vascular parkinsonism versus idiopathic Parkinson's disease

open access: yesNeurología (English Edition), 2020
Introduction: The diagnosis of vascular parkinsonism (VP) is based on a series of clinical criteria and neuroimaging findings. An increase in transcranial Doppler ultrasonography pulsatility index (PI) has been described as a frequent finding in patients
L.M. Caba   +5 more
doaj   +1 more source

El índice de pulsatilidad intracraneal elevado apoya el diagnóstico de parkinsonismo vascular frente a enfermedad de Parkinson idiopática

open access: yesNeurología, 2020
Resumen: Introducción: El diagnóstico de parkinsonismo vascular (PV) se realiza en función de una serie de criterios clínicos y hallazgos de neuroimagen compatibles. El aumento en el índice de pulsatilidad (IP) determinado por doppler transcraneal se ha
L.M. Caba   +5 more
doaj   +1 more source

Investigation into the selection of viewing configurations for three-component planar Doppler velocimetry measurements. [PDF]

open access: yes, 2007
A method for the calculation of three orthogonal velocity components in planar Doppler velocimetry (PDV) using four or more measured velocity components (to the three typically used) is presented.
Nobes, David S.   +2 more
core   +6 more sources

Validez del Doppler transcraneal en el diagnóstico de muerte encefálica [PDF]

open access: yesRevista médica de Chile, 2010
Background: The clinical diagnosis of brain death is complex. Aim: To evaluate the diagnostic accuracy of transcranial Doppler (TCD) for brain death. Patients and Methods: Patients seen on the intensive care unit of a private hospital between January 2004 to December 2008, were included if they were in structural coma, had no craniectomy and had a ...
BRUNSER, ALEJANDRO   +7 more
openaire   +2 more sources

Dual Illumination Planar Doppler Velocimetry using a Single Camera [PDF]

open access: yes, 2003
A Planar Doppler Velocimetry (PDV) illumination system has been designed which is able to generate two beams, separated in frequency by about 600 MHz. This allows a common-path imaging head to be constructed, using a single imaging camera instead of ...
Nobes, David S.   +7 more
core   +1 more source

Multistatic human micro-Doppler classification of armed/unarmed personnel [PDF]

open access: yes, 2015
Classification of different human activities using multistatic micro-Doppler data and features is considered in this paper, focusing on the distinction between unarmed and potentially armed personnel.
Griffiths, Hugh   +8 more
core   +1 more source

Acousto-optic frequency switching for single-camera planar Doppler velocimetry [PDF]

open access: yes, 2001
A single-camera Planar Doppler velocimetry system has been demonstrated, in which illumination beams at two closely-spaced optical frequencies are derived from a single Argon-ion laser.
Nobes, David S.   +5 more
core   +1 more source

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