Results 31 to 40 of about 11,817 (216)

Abnormal transcranial Döppler ultrasonography in children with sickle cell disease

open access: yesRevista Brasileira de Hematologia e Hemoterapia, 2012
BACKGROUND: Stroke is a potentially fatal complication of sickle cell disease in children between 2-16 years and transcranial Döppler has been recommended as a screening method in these cases.
Ana Claudia Celestino Bezerra Leite   +4 more
doaj   +1 more source

Transcranial doppler ultrasonography should it be the first choice for persistent foramen ovale screening? [PDF]

open access: yes, 2014
BACKGROUND: Persistent foramen ovale (PFO) is considered a cause of cryptogenic stroke and a risk factor for neurological events in young patients. The reference standard for identifying a PFO is contrast-enhanced transesophageal echocardiography (TEE ...
Anna Kabłak-Ziembicka   +9 more
core   +1 more source

Transcranial Doppler Ultrasound Detection of Microemboli as a Predictor of Cerebral Events in Patients with Symptomatic and Asymptomatic Carotid Disease: A Systematic Review and Meta-Analysis. [PDF]

open access: yes, 2016
OBJECTIVE: Identification of patients who will benefit from carotid endarterectomy is not entirely effective, primarily utilising degree of carotid stenosis.
Best, LM   +4 more
core   +1 more source

Resultados do estudo do Doppler transcraniano em crianças e adolescentes portadores de doença falciforme e correlação entre a velocidade média máxima e características hematológicas: um estudo transversal analítico [PDF]

open access: yes, 2011
CONTEXT AND OBJECTIVE: Transcranial Doppler (TCD) detects stroke risk among children with sickle cell anemia (SCA). Our aim was to evaluate TCD findings in patients with different sickle cell disease (SCD) genotypes and correlate the time-averaged ...
Braga, Josefina Aparecida Pellegrini   +3 more
core   +2 more sources

A noninvasive estimation of cerebral perfusion pressure using critical closing pressure. [PDF]

open access: yes, 2015
OBJECT: Cerebral blood flow is associated with cerebral perfusion pressure (CPP), which is clinically monitored through arterial blood pressure (ABP) and invasive measurements of intracranial pressure (ICP). Based on critical closing pressure (CrCP), the
Brady, Ken M   +7 more
core   +2 more sources

Results of an international survey on the investigation and endovascular management of cerebral vasospasm and delayed cerebral ischemia [PDF]

open access: yes, 2015
Background: Delayed cerebral ischemia (DCI) is a major cause of morbidity and mortality in aneurysmal subarachnoid hemorrhage. Endovascular management of this condition offers a new hope in preventing adverse outcome; however, a uniform standard of ...
Bulsara, Ketan R.   +5 more
core   +1 more source

Non‐Invasive Multidimensional Capacitive Sensing for In Vivo Traumatic Brain Injury Monitoring

open access: yesAdvanced Materials Technologies, EarlyView.
Single‐electrode, multidimensional capacitive sensors noninvasively assess cerebral autoregulation and compliance for traumatic brain injury monitoring. ABSTRACT Traumatic brain injury (TBI) is a major cause of death and disability, but invasive intracranial pressure (ICP) monitoring is risky, and current non‐invasive methods lack the resolution and ...
Shawn Kim   +8 more
wiley   +1 more source

Impaired Cerebral Haemodynamics in Vascular Depression: Insights From Transcranial Doppler Ultrasonography

open access: yesFrontiers in Psychiatry, 2018
Introduction: Late-life depression is a well-known risk factor for future dementia. Increasing evidences also show a link between cerebral hypoperfusion and neurodegeneration, although data on Transcranial Doppler ultrasonography (TCD)-derived measures ...
Valentina Puglisi   +9 more
doaj   +1 more source

Inferring common cognitive mechanisms from brain blood-flow lateralization data: a new methodology for fTCD analysis [PDF]

open access: yes, 2014
Current neuroimaging techniques with high spatial resolution constrain participant motion so that many natural tasks cannot be carried out. The aim of this paper is to show how a time-locked correlation-analysis of cerebral blood flow velocity (CBFV ...
Fairlie, Jo   +3 more
core   +2 more sources

Sleep Alters the Velocity of Physiological Brain Pulsations in Humans

open access: yesAdvanced Science, EarlyView.
Sleep alters I/CSF oscillatory flow, driven by increased respiratory (29%) and vasomotor pulsation (21%) velocities, while cardiovascular pulsations decreased by (22%). Velocity is quantified using optical flow analysis of MREG data. Spectral power increases alongside these pulsations (spatial correlation, r = 0.35 and r = 0.39, respectively ...
Ahmed Elabasy   +13 more
wiley   +1 more source

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