Log in

Relevant bibliographies by topics / Doppler transcranial / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Doppler transcranial.

Dissertations / Theses on the topic 'Doppler transcranial'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Doppler transcranial.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Santos, Renata da Silva Almeida. "Qualidade da janela transtemporal definida pelo ultrassom transcraniano colorido." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/17/17161/tde-06012017-155144/.

Full text

Abstract:

INTRODUÇÃO: O ultrassom transcraniano colorido (UTC) é um eficiente método para avaliação da circulação intracraniana e do fluxo sanguíneo cerebral em diversas condições clínicas incluindo o acidente vascular isquêmico agudo. Uma das principais limitação deste método reside na incapacidade de insonação intracraniana adequada através da janela transtemporal em até 20% dos pacientes. Neste contexto, surge a necessidade do desenvolvimento de uma metodologia estruturada que permitisse caracterizar a qualidade da janela transtemporal de forma mais detalhada e objetiva. No presente estudo, objetivam

APA, Harvard, Vancouver, ISO, and other styles

2

Pietrangelo, Sabino Joseph. "A wearable Transcranial Doppler ultrasound phased array system." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108848.

Full text

Abstract:

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 183-190).<br>Transcranial Doppler (TCD) sonography is a specialized ultrasound technique that enables measurement of blood ow velocity from the basal intracerebral vessels. Use of TCD sonography is highly compelling as a diag

APA, Harvard, Vancouver, ISO, and other styles

3

Pietrangelo, Sabino Joseph. "An electronically steered, wearable transcranial doppler ultrasound system." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79234.

Full text

Abstract:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 137-144).<br>This thesis details the design of a transcranial Doppler (TCD) ultrasound system to measure cerebral blood flow velocity (CBFV) at the middle cerebral artery (MCA). TCD sonography has been clinically indicated in a variety of neurovascular diagnostic applications. Acceptance of conventional TCD methods, however, has been primarily impeded by several constraints, including restrictive sy

APA, Harvard, Vancouver, ISO, and other styles

4

Weir, Alexander James. "Channel characterisation and modelling for transcranial Doppler ultrasound." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3341.

Full text

Abstract:

The detection of micro-embolic signals (MES) is a mature application of transcranial Doppler (TCD) ultrasound. It involves the identification of abnormally highpitched signals within the arterial waveform as a method of diagnosis and prediction of embolic complications in stroke patients. More recently, algorithms have been developed to help characterise and classify MES using advanced signal processing techniques. These advances aim to improve our understanding of the causes of cereberovascular disease, helping to target the most appropriate interventions and quantifying the risk to patients

APA, Harvard, Vancouver, ISO, and other styles

5

Payne, H. M. "Assessing language lateralisation using functional transcranial Doppler sonography." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10044714/.

Full text

Abstract:

This thesis uses functional transcranial Doppler sonography (fTCD) to investigate hemispheric asymmetries in brain activity during language processing. FTCD is a simple method that provides a measure of relative lateralisation. Given its portability and tolerance for movement, it allows physiological activity and behaviour to be measured simultaneously in understudied paediatric populations. The fi rst half of the thesis describes three methodologically motivated studies with adults. The results indicated that the strength of lateralisation is affected by experimental manipulations of task and

APA, Harvard, Vancouver, ISO, and other styles

6

Libardi, Milena Carvalho. "Acurácia da ultrassonografia transcraniana colorida no diagnóstico de forame oval patente." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/17/17161/tde-21072016-155101/.

Full text

Abstract:

Introdução:O Forame Oval Patente (FOP) é a comunicação direita-esquerda (CDE) ou shunt direita-esquerda (SDE) mais comum e frequentemente encontrada em adultos jovens com Acidente Vascular Cerebral (AVC) relacionado ao mecanismo de embolia paradoxal. A Ecocardiografia Transesofágia (ETE) é considerada o padrão para visualização direta do FOP. O Doppler Transcraniano com o teste de microbolhas é frequentemente usado para detectar CDE com boa correlação com o ETE para o diagnóstico de FOP. Mais recentemente, a Ultrassonografia Transcraniana Colorida (TCCS) com inclusão do modo-B e fluxo de cor t

APA, Harvard, Vancouver, ISO, and other styles

7

Magee, Timothy Raymond. "The role of bilateral transcranial doppler sonography in carotid endarterectomy." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322523.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Weber, Marcel Grolimund Peter Seiler Rolf W. "Evaluation of post-traumatic cerebral vasospasm by transcranial doppler ultrasound /." [Bern] : [s.n.], 1989. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Cardim, Danilo Augusto. "Non-invasive monitoring of intracranial pressure using transcranial Doppler ultrasonography." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267988.

Full text

Abstract:

Intracranial pressure (ICP) is an important monitoring modality in the clinical management of several neurological diseases carrying the risk of fatal intracranial hypertension. However, this parameter is not always considered due to its invasive assessment. In this scenario, a non-invasive estimation of ICP (nICP) may be essential, and indeed it has become a Holy Grail in Clinical Neurosciences: extensively searched, albeit never found. This thesis is devoted to the assessment, applications and development of transcranial Doppler (TCD)-based non-invasive methods for ICP and cerebral perfusion

APA, Harvard, Vancouver, ISO, and other styles

10

Goh, Day-Eel. "The clinical application of transcranial Doppler ultrasonography in infants and children." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/26543.

Full text

Abstract:

Transcranial Doppler ultrasound (TCD) is a non-invasive, safe and readily repeatable technique of measuring cerebral blood flow velocity (CBFV) which may be ideally suited for the bedside assessment of cerebrohaemo-dynamic changes in children. A number of clinical conditions in which this technique could yield useful information was investigated i.e in infants and children with hydrocephalus, pyogenic meningitis and during cardiopulmonary bypass (CPB) surgery. A range of normal CBFV values was first established from 51 normal children. Data on the peak-systolic (PSV), end-diastolic (EDV), mean

APA, Harvard, Vancouver, ISO, and other styles

11

Haratz, Salo Semelmann. "Nova metodologia de Doppler transcraniano funcional durante tarefa motora unimanual." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-04092014-150433/.

Full text

Abstract:

INTRODUÇÃO: O Doppler Transcraniano funcional pode avaliar mudanças na velocidade do fluxo sanguíneo encefálico associadas a tarefas cognitivas e/ou sensitivo-motoras. Mede de maneira indireta a atividade metabólica de regiões cerebrais, segundo o princípio do acoplamento neurovascular. Os objetivos deste estudo foram: desenvolver um novo método de análise de Doppler transcraniano funcional para análise da lateralização hemisférica e verificar a capacidade deste novo método em diferenciar a lateralização hemisférica durante a execução de uma tarefa motora unimanual por indivíduos saudáveis. Ad

APA, Harvard, Vancouver, ISO, and other styles

12

Wong, Michael Lik Hang. "Transcranial doppler ultrasound pulsatility index and cerebral blood flow autoregulation in neurotrauma /." Title page and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09MS.B/09ms.bw872.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Muchacha, López Marián. "Predictores clínicos y hemodinámicos de respuesta al tratamiento trombolítico endovenoso en pacientes con ictus isquémico agudo." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/285159.

Full text

Abstract:

INTRODUCCIÓN: El ictus es una enfermedad con una elevada morbimortalidad, siendo en España la primera causa de mortalidad en la mujer y la segunda en el hombre, además de ser la primera causa médica de discapacidad permanente en la edad adulta, y la segunda de demencia. El ictus isquémico representa el 80-85% de los ictus. Actualmente, el único tratamiento aprobado es la trombolisis intravenosa. Predecir el pronóstico y evolución de los pacientes en la fase aguda del ictus resulta complicado, dadas las numerosas variables que intervienen tanto previas al tratamiento como durante y tras el mism

APA, Harvard, Vancouver, ISO, and other styles

14

Nogueira, Ricardo de Carvalho. "Autorregulação encefálica durante manobra de preensão manual avaliada pela técnica de autorregressão de médias móveis através do Doppler transcraniano." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-28082012-093603/.

Full text

Abstract:

Foram analisados os efeitos da manobra de preensão manual (PM) na autorregulação encefálica (AE) dinâmica, através de um método não estacionário que utiliza o modelo de autorregressão de médias móveis. Doze indivíduos saudáveis foram orientados a realizar a manobra de PM durante 11 minutos com contração muscular constante e carga de 30% da força máxima. Registraram-se continuamente as medidas da velocidade do fluxo sanguíneo nas artérias cerebrais médias, pressão parcial de CO2 (PCO2) no ar expirado e pressão arterial (PA) não invasiva, durante o repouso (5 min), PM (3 min) e recuperação (3 mi

APA, Harvard, Vancouver, ISO, and other styles

15

Shen, Qiaomei. "An investigation into transcranial Doppler ultrasonography : observer agreement of variability of data in healthy volunteers and patients /." [St. Lucia, Qld.], 2000. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16192.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Barrett, Natasha Ann. "Estimating the Capacity of Visual Short-Term Memory: A Transcranial Doppler Sonography Study." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/psych_theses/44.

Full text

Abstract:

Estimates of the capacity of visuospatial short-term memory (VSTM) have ranged from less than 1 item to 4 +/- 1 items. The purpose of the present study was to find the capacity of VSTM by looking at the contribution of the other working memory systems (phonological loop and central executive) and determine the factor that limits VSTM capacity (either number of objects or object complexity). In this study, the psychophysiological measure of cerebral blood flow velocity also was incorporated to determine whether changes in cerebral blood flow velocity were indicative of VSTM performance and ca

APA, Harvard, Vancouver, ISO, and other styles

17

Barrett, Natasha. "Estimating the capacity of visual short-term memory a transcranial doppler sonography study /." unrestricted, 2007. http://etd.gsu.edu/theses/available/etd-11272007-104111/.

Full text

Abstract:

Thesis (M.A.)--Georgia State University, 2007.<br>Title from file title page. David A. Washburn, committee chair; Heather M. Kleider, Eric J. Vanman, committee members. Electronic text (65 p. : ill. (some col.)) : digital, PDF file. Description based on contents viewed May 23, 2008. Includes bibliographical references (p. 58-64).

APA, Harvard, Vancouver, ISO, and other styles

18

Cullinane, M. "The study of cerebral emboli using transcranial doppler ultrasound : clinical and technical studies." Thesis, King's College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Krauskopf, Erin Elizabeth. "Cognitive Function Following Bubble-Contrast Transcranial Doppler for Evaluation of Right-to-Left Shunt." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5518.

Full text

Abstract:

Background: Stroke is a leading cause of significant physical, cognitive, and psychiatric morbidity. One risk factor for stroke is paradoxical embolization through a patent foramen ovale (PFO). In cardiac clinical practice, power M-mode Transcranial Doppler (TCD) evaluation is the gold standard for diagnosis of PFO, or right-to-left cardiac shunt (RLS). Brain micro-embolization due to diagnostic bubble contrast echocardiography may cause neurological symptoms in patients with PFO. However, the neurocognitive effects of TCD have not been studied. Objective: The purpose of this study was to eval

APA, Harvard, Vancouver, ISO, and other styles

20

Poulin, Marc J. "Aspects of cerebral blood flow in humans." Thesis, University of Oxford, 1998. http://ora.ox.ac.uk/objects/uuid:a2af655f-9198-4cd0-a126-57c070f6399d.

Full text

Abstract:

The technique of transcranial Doppler ultrasound (TCD) was used to assess cerebral blood flow (CBF) in humans. Studies were performed at rest and during dynamic submaximal exercise. In the resting experiments, TCD was combined with the technique of dynamic end-tidal forcing to study the dynamics of the CBF response to step changes in end-tidal (i.e. arterial) PC02 and PO2 In the resting and exercise experiments, the degree of consistency was examined between three indices of CBF that can be extracted from the TCD spectrum. Finally, the ventilatory and the CBF responses to acute isocapnic hypox

APA, Harvard, Vancouver, ISO, and other styles

21

Hitchcock, Edward M. "EFFECTS OF SIGNAL SALIENCE AND CUEING ON CEREBRAL BLOOD FLOW VELOCITY DURING SUSTAINED ATTENTION." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin971875192.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Sardinha, Luiz Antonio da Costa. "Analise retrospectiva da aplicação do doppler transcraniano no diagnostico de morte encefalica em potenciais doadores de orgãos." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/312008.

Full text

Abstract:

Orientadores: Sebastião Araujo, Venancio Pereira Dantas Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-12T15:16:20Z (GMT). No. of bitstreams: 1 Sardinha_LuizAntoniodaCosta_M.pdf: 2011440 bytes, checksum: 851ec72bdf3a8bdfb52b9cb454b11066 (MD5) Previous issue date: 2008<br>Resumo: Justificativa e Objetivo. No Brasil, o diagnóstico clínico de morte encefálica (ME) requer pelo menos um exame subsidiário para sua confirmação, e o Doppler transcraniano (DTC) tem sido aceito para documentar a parada circulató

APA, Harvard, Vancouver, ISO, and other styles

23

Bridges, Nathaniel Reese. "Predicting Vigilance Performance Under Transcranial Direct Current Stimulation." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1309616451.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Cerqueira, Telma Cristina Fontes. "Repercussão da manobra de hiperventilação breve sobre a hemodinâmica cerebral, sistêmica e alterações gasométricas em pacientes sob assistência ventilatória mecânica." Universidade Federal de Sergipe, 2006. http://ri.ufs.br:8080/xmlui/handle/123456789/3925.

Full text

Abstract:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Measurements of respiratory mechanics, very important to conduct the patient with mechanical ventilation, are obtained with the relaxation of respiratory muscle in sedated or paralyzed patients or through a brief period of hyperventilation (HV), which is possible to decrease the drive ventilation of patient. However, it´s known that the hyperventilation decreases the carbon dioxide arterial pressure (PaCO2) and can induce changes in the cerebral blood flow. Then, this study proposes to verify the effects of this brief period of HV

APA, Harvard, Vancouver, ISO, and other styles

25

Vora, Yashail Y. "The role of transcranial Doppler ultrasonography in the diagnosis of cerebral vasospasm following aneursymal subarachnoid hemorrhage." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0002/MQ34429.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

MacKinnon, Andrew David. "Cerebral embolism in carotid stenosis : embolic signal detection with conventional and novel ambulatory transcranial Doppler ultrasound." Thesis, St George's, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424769.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Jeste, Neelum D. M. D. "SACRED: Stroke Avoidance for Children in Republica Dominicana." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1495807669759263.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Liu, Xiuyun. "Optimization of the assessment of cerebral autoregulation in neurocritical care unit." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/265164.

Full text

Abstract:

Introduction Cerebral autoregulation (CA) refers to the physiological mechanisms in the brain to maintain constant blood flow despite changes in cerebral perfusion pressure (CPP). It plays an important protective role against the danger of ischaemia or oedema of the brain. Over the years, various methods for CA assessment have been proposed, while most commonly used parameters include the autoregulation index (ARI), which grades CA into ten levels; transfer function (TF) analysis, describing CA as a high pass filter; the mean flow index (Mx), that estimates CA through the correlation coefficie

APA, Harvard, Vancouver, ISO, and other styles

29

Beam, Christina Ashley. "Effects of Sensory and Cognitive Vigilance Tasks on Cerebral Blood Flow Velocity." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1036017621.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Errico, Claudia. "Ultrasound sensitive agents for transcranial functional imaging, super-resolution microscopy and drug delivery." Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC013.

Full text

Abstract:

Cette thèse porte sur deux branches majeures de l'utilisation d'agents sensibles aux ultrasons: l'échographie ultrarapide du cerveau assistée par microbulles et la délivrance par ultrasons de médicaments pour la thérapie du cancer. Dans la première approche, des microbulles remplies de gaz fluoré ont été utilisés pour observer l'activation du cerveau à travers le crâne des rongeurs. Nous avons été en mesure de reconstituer de manière non invasive le réseau vasculaire du cerveau, puis de récupérer sa réponse hémodynamique avec une résolution spatio-temporelle élevée. La validation de cette appr

APA, Harvard, Vancouver, ISO, and other styles

31

Glass, Ivani Rodrigues. "Características hemodinâmicas cerebrais não invasivas em indivíduos com doença de chagas crônica do município de Umbaúba, estado de Sergipe." Pós-Graduação em Ciências da Saúde, 2018. http://ri.ufs.br/jspui/handle/riufs/9363.

Full text

Abstract:

Chagas disease is endemic in a region from Mexico to Argentina. In Brazil, chronic cases predominate with approximately two million infected individuals. Central nervous system involvement, triggering stroke in chagasic patients with myocardiopathy, has occurred in high incidence, usually due to cardiac emboli originating from apical aneurysm, mural thrombi and atrial fibrillation. However, the occurrence of stroke can also occur in individuals with Chagas disease (CD) even without a history of cardiopathy. This study aims to evaluate cerebral hemodynamics in individuals with serologica

APA, Harvard, Vancouver, ISO, and other styles

32

Júnior, Fernando Mendes Paschoal. "Autorregulação encefálica na insuficiência hepática fulminante antes e após transplante hepático." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-09082016-153844/.

Full text

Abstract:

O presente estudo avaliou a autorregulação encefálica (ARE) em doentes com insuficiência hepática fulminante (IHF) antes e após transplante hepático. Foram avaliados 25 pacientes com diagnóstico de IHF, 17 foram avaliados antes e após o transplante hepático, sendo seis (24,0%) do sexo masculino e 19 (76,0%) feminino. A média de idade foi de 33,8 anos, que variou de 14 a 56 anos, com desvio padrão de 13,1 anos. A hemodinâmica encefálica foi avaliada pela velocidade de fluxo sanguíneo encefálico (VFSE) nas artérias cerebrais médias e artéria basilar (AB), que usou o ultrassom Doppler transcrania

APA, Harvard, Vancouver, ISO, and other styles

33

Oliveira, Matheus Fernandes de. "Derivação ventriculosinusal retrógrada em lactentes com hidrocefalia após correção de mielomeningocele." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-19062017-161737/.

Full text

Abstract:

INTRODUÇÃO. Atualmente, o tratamento da hidrocefalia é realizado principalmente através de uma Derivação ventrículo-peritoneal (DVP). Este estudo tem como objetivo descrever a aplicação da derivação ventrículosinusal retrógrada (DVSR) em pacientes com hidrocefalia após o tratamento cirúrgico de mielomeningocele. MÉTODO. Estudo prospectivo, randomizado e controlado. Foram selecionados consecutivamente 9 pacientes com hidrocefalia após correção cirúrgica de mielomeningocele de janeiro de 2010 a janeiro de 2012. Os pacientes foram submetidos à DVSR ou DVP eletiva. Cinco submetidos à DVSR e 4 à DV

APA, Harvard, Vancouver, ISO, and other styles

34

Brisson, Rodrigo Tavares. "Associação entre características tomográficas do osso temporal e a qualidade da janela transtemporal com o ultrassom transcraniano colorido em pacientes com AVC e AIT: estudo observacional analítico." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/17/17161/tde-27082018-110538/.

Full text

Abstract:

Introdução: O ultrassom transcraniano colorido (UTCC) é uma técnica ultrassonográfica que incorpora a imagem do parênquima cerebral à avaliação do fluxo sanguíneo dos vasos do polígono de Willis. Uma de suas maiores limitações é a necessidade de uma janela transtemporal adequada para insonação transcraniana, o que está ausente em cerca de 5-44% dos pacientes. A hiperostose da escama temporal tem sido fortemente associada a falência de janela transtemporal. Objetivamos neste estudo observacional analítico, avaliar a relação entre a a qualidade da janela transtemporal determinada com o UTCC e as

APA, Harvard, Vancouver, ISO, and other styles

35

Figaji, Anthony A. "Multimodality monitoring in paediatric severe traumatic brain injury : the contributions of brain oxygen, transcranial doppler and autoregulation monitoring to conventional methods on monitoring." Doctoral thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/2882.

Full text

Abstract:

Includes abstract.<br>Includes bibliographical references (p. 175-218).<br>Traumatic brain injury (TBI) is a highly complex clinical condition in the most complex organ of the body. The foundation of care of the patient with severe TBI is the prevention of secondary insults to the brain. This relies on conventional monitoring tools to identify patients at risk, but often these may fail to detect important secondary insults. Moreover, the therapies that are used commonly in the critical care environment all have potential adverse effects, many of which may not be evident. TBI treatment in child

APA, Harvard, Vancouver, ISO, and other styles

36

Jacikevičius, Kęstutis. "Transkranijinės doplerografijos diagnostinė reikšmė esant galvos smegenų arterioveninėms malformacijoms." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20060328_124449-54644.

Full text

Abstract:

CONTENT 1. INTRODUCTION 7 2. PATIENTS AND METHODS 8 2.1. Patients 8 2.2. Control Group 8 2.3. Study Methods 9 2.4. Treatment of Patients 9 2.5. Outcome State 10 2.6. Statistical Data Analysis 10 3. RESULTS 10 3.1. Clinical Manifestations of Cerebral Arteriovenous Malformations 10 3.2. Consciousness according to Glasgow Coma Scale 10 3.3. Distribution of Patients According to Spetzler-Martin Classification 11 3.4. Localization of Cerebral Arteriovenous Malformations 11 3.5. The Localization of Intracranial Haemorrhages after the Rupture of Cerebral Arteriovenous Malformations 11 3.6. Distribu

APA, Harvard, Vancouver, ISO, and other styles

37

Punter, Martin Nicholas Michael. "Understanding the mechanisms of embolic stroke : transcranial Doppler ultrasound as a tool to understand patterns of embolism and mechanisms of stroke in patients at risk of embolic stroke." Thesis, St George's, University of London, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546776.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Cheatham, Sharon Laneau. "Neurodevelopmental Outcomes in Infants with Hypoplastic Left Heart Syndrome after Hybrid Stage I Palliation." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354649654.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Shaw, Tyler H. "Effects of Signal Modality and Event Asynchrony on Vigilance Performance and Cerebral Hemovelocity." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154632131.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

LANGHEIM, LISA KAY. "Cerebral Blood Flow Velocity as a Diagnostic Index of Stress and Fatigue in Simulated Vehicle Driving." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218750196.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Gahn, Georg, Gabriele Hahn, Susanne Hallmeyer-Elgner, et al. "Echo-Enhanced Transcranial Color-Coded Duplexsonography to Study Collateral Blood Flow in Patients with Symptomatic Obstructions of the Internal Carotid Artery and Limited Acoustic Bone Windows." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-135371.

Full text

Abstract:

We prospectively evaluated 30 consecutive patients with echo-enhanced transcranial color-coded duplexsonography (TCCD) and correlative transfemoral digital subtraction angiography to assess the diagnostic efficacy of echo-enhanced TCCD for evaluation of collateral pathways through the circle of Willis in patients with limited acoustic bone windows and critical symptomatic carotid disease. Echo-enhanced TCCD detected collateral blood flow through the anterior communicating artery in 16 of 18 patients (sensitivity 89%, 95% CI 65–99%) and was false positive in one out of 12 patients without colla

APA, Harvard, Vancouver, ISO, and other styles

42

Rutkauskas, Saulius. "Galvos ir kaklo kraujagyslių ultragarsinių tyrimų parametrų vertė prognozuojant lengvo kognityvinio sutrikimo progresavimą į demenciją." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_233827-86761.

Full text

Abstract:

Demencija yra vienas iš dažniausiai sutinkamų psichikos sutrikimų vyresniame amžiuje. Pastebėta, kad dalis vyresnio amžiaus pacientų, kuriems vėliau išsivysto demencija, dažniau nei bendraamžiai skundžiasi pažinimo sutrikimais, tačiau kasdieninė veikla yra nesutrikusi. Ši būklė buvo pavadinta lengvu kognityviniu sutrikimu (LKS). Neurosonografiniai tyrimai pateikia daug naudingos informacijos apie funkcinius galvos ir kaklo kraujagyslių parametrus. Tyrimo tikslas buvo nustatyti neurosonografinių galvos ir kaklo arterijų parametrų vertę prognozuojant demenciją lengvu kognityviniu sutrikimu serga

APA, Harvard, Vancouver, ISO, and other styles

43

Gahn, Georg, Gabriele Hahn, Susanne Hallmeyer-Elgner, et al. "Echo-Enhanced Transcranial Color-Coded Duplexsonography to Study Collateral Blood Flow in Patients with Symptomatic Obstructions of the Internal Carotid Artery and Limited Acoustic Bone Windows." Karger, 2001. https://tud.qucosa.de/id/qucosa%3A27643.

Full text

Abstract:

We prospectively evaluated 30 consecutive patients with echo-enhanced transcranial color-coded duplexsonography (TCCD) and correlative transfemoral digital subtraction angiography to assess the diagnostic efficacy of echo-enhanced TCCD for evaluation of collateral pathways through the circle of Willis in patients with limited acoustic bone windows and critical symptomatic carotid disease. Echo-enhanced TCCD detected collateral blood flow through the anterior communicating artery in 16 of 18 patients (sensitivity 89%, 95% CI 65–99%) and was false positive in one out of 12 patients without colla

APA, Harvard, Vancouver, ISO, and other styles

44

Tiran, Elodie. "Imagerie cérébrale et étude de la connectivité fonctionnelle par échographie Doppler ultrarapide chez le petit animal éveillé et en mouvement." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC174/document.

Full text

Abstract:

Mes travaux de thèse portent sur l’application de l’imagerie fUS (functional ultrasound imaging) à l’imagerie cérébrale préclinique chez le petit animal. Le but était de transformer cette technique d’imagerie cérébrale récente en un véritable outil de quantification de l’état cérébral. Les objectifs principaux ont été de démontrer la faisabilité de l’imagerie fUS chez le petit animal non anesthésié ainsi que de passer du modèle rat au modèle souris - modèle de choix en imagerie préclinique en neurosciences - de surcroît de façon non invasive. J’ai tout d’abord mis au point une nouvelle séquenc

APA, Harvard, Vancouver, ISO, and other styles

45

Paiva, Bernardo Lembo Conde de. "Novo método de hipotermia encefálica exclusiva através de resfriamento nasofaríngeo: modelo experimental em suínos." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-09022015-090243/.

Full text

Abstract:

INTRODUÇÃO: Evidências relevantes acerca dos benefícios da hipotermia terapêutica provieram da utilização de técnicas de resfriamento sistêmico. Essas técnicas, no entanto, podem causar complicações graves que poderiam ser evitadas com métodos de hipotermia encefálica seletiva. O presente estudo objetiva: 1) verificar a viabilidade da hipotermia encefálica exclusiva através de um sistema de resfriamento nasofaríngeo concomitante ao de preservação da temperatura corpórea em suínos e 2) investigar os efeitos da hipotermia encefálica exclusiva nas variáveis fisiológicas sistêmicas e encefálicas.

APA, Harvard, Vancouver, ISO, and other styles

46

Lange, Marcos Christiano. "Embolia paradoxal avaliada pelo Doppler Transcraniano." reponame:Repositório Institucional da UFPR, 2011. http://hdl.handle.net/1884/26288.

Full text

Abstract:

Resumo: O Doppler transcraniano contrastado (DTCc) é um método diagnóstico utilizado com frequência na investigação da embolia paradoxal (EP) e do forame oval patente (FOP). Apesar da padronização do método, inúmeros questionamentos existem em relação a metodologia utilizada, entre as quais, a solução contrastante ideal, o momento de realização da manobra de Valsalva (MV) durante o exame sensibilizado e marcadores que diferenciem entre a EP devido o FOP e outras EPs, preferencialmente as extracardíacas. Este estudo teve como objetivos: 1) comparar a positividade de EP pelo DTCc com o uso de du

APA, Harvard, Vancouver, ISO, and other styles

47

Aleksandra, Lučić Prokin. "Procena cerebralne autoregulacije primenom apnea testa kod simptomatske karotidne stenoze pre i posle karotidne endarterektomije." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94905&source=NDLTD&language=en.

Full text

Abstract:

TCD apnea test kao neinvazivna i bezbedna neuroultrasonografska metoda pruža korisne informacije o vazomotornoj reaktivnosti (VMR) u procesu indirektnog sagledavanja funkcionisanja moždane autoregulacije. Vazomotorna reaktivnosti podrazumeva sposobnost dilatacije ili konstrikcije moždanih arteriola nastale kao odgovor na određeni vazoaktivni stimulus, najče&scaron;će ugljen dioksid. Cilj ove doktorske disertacije bio je ispitivanje i analiziranje promene karotidne hemodinamike kod bolesnika sa ishemijskim moždanim udarom (IMU) ili tranzitornim ishemijskim atakom (TIA) i simptomatskom karotidno

APA, Harvard, Vancouver, ISO, and other styles

48

Guhr, Susanne. "Visuell evozierte Flussgeschwindigkeitänderungen in der A. cerebri posterior bei Normalprobanden und Patienten mit Leitungsverzögerungen im Sehbahnbereich." Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2002. http://dx.doi.org/10.18452/14779.

Full text

Abstract:

In der vorliegenden Arbeit werden am Beispiel visuell evozierter Flussgeschwindigkeitsänderungen die Anpassung der zerebralen Hämodynamik an Änderungen der Gehirnaktivität untersucht. Dazu wurde das nichtinvasive Verfahren der transkraniellen Dopplersonographie angewendet. Ziele der Arbeit waren das Erstellen von Normwerten der Latenzen und Amplituden visuell evozierter Geschwindigkeitsänderungen an einer Gruppe von Normalprobanden sowie die Prüfung der Sensitivität der zeitlichen Auflösung dieses Verfahrens. Die Untersuchungen wurden an einer Gruppe von 20 Normalprobanden und an einer Grupp

APA, Harvard, Vancouver, ISO, and other styles

49

Demolis, Pierre. "Application du doppler transcranien aux études de pharmacologie clinique." Paris 11, 1994. http://www.theses.fr/1994PA11T015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Svetlana, Ružička Kaloci. "Procena značaja cerebralnih mikroembolusa u akutnom ishemijskom cerebrovaskularnom događaju." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2015. http://www.cris.uns.ac.rs/record.jsf?recordId=94481&source=NDLTD&language=en.

Full text

Abstract:

Otkrivanje embolusa u cerebralnoj cirkulaciji na egzaktan način moguće je samo upotrebom transkranijalnog doplera. Istraživanje je obuhvatilo 150 ispitanika, obolelih od akutnog ishemijskog cerebrovaskularnog događaja (ishemijskog moždanog udara i tranzitornog ishemijskog ataka) u zoni vaskularizacije a. cerebri medie (ACM), a lečenih na Klinici za neurologiju, Kliničkog centra Vojvodine. Ciljevi istraživanja su obuhvatili određivanje prevalence i frekvence MES kod bolesnika sa akutnim ishemijskim cerebrovaskularnim događajem (TIA, IMU) tokom serijskog monitoringa, utvrđivanje povezanost pojav

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!