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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

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Showing 1 to 20 of 48 for “"cerebral perfusion"”.

  1. Compensation of the Cerebral Perfusion in Patients with Infarction : SPM Analysis

    홍, 선표2011

    … study was to evaluate the compensatory effect on cerebral perfusion in patients with cerebral infarction. Ninety three Tc-99m ECD brain perfusion SPECTs (male/female: 58/35, mean age 58) of 93 patients with cerebral infarction were evaluated retrospectively. Any patient with bilateral …

    ajou Repository record

  2. Resting-State Cerebral Perfusion Patterns: An Exploratory Factor Analysis of Single-Photon Emission Computed Tomography Clinical Data

    Harcourt, ScottNSUWorks2021

    … emission computed tomography (SPECT) regional cerebral blood flow (rCBF) to analyze RS. The omission is critical because SPECT RS networks have a different structure and statistical representation than functional magnetic resonance imaging (fMRI) RS networks. Moreover, recent fMRI research has …

    nova2 Repository record

  3. Effects of Mild Blast Traumatic Brain Injury on Cerebral Vascular Function, Histopathological and Behavioral Outcomes in Rats

    Rodriguez, Uylissa AnnThe University of Texas Medical Branch at Galveston2018

    … non-blast TBI) is often associated with reduced cerebral perfusion and impaired cerebrovascular function due, in part, to the generation of reactive oxygen (ROS) and reactive nitrogen species (RNS) (e.g. peroxynitrite, ONOO‾). Although blast TBI (bTBI) also reduces cerebral perfusion, less is …

    utmb Repository record

  4. Prospective study to compare the difference in cerebral perfusion in patients undergoing shoulder surgery with the standard beach chair position compared to 30˚ inclination

    Naude, Petrus HendrikDepartment of Health and Rehabilitation Sciences2016

    … angles patients suffered a significant number of cerebral desaturation events that may lead to ischaemic neurological events. This angle is far more upright than what is used in our practice. We postulated that decreasing the angle of inclination may be protective of cerebral perfusion. We …

    cape-town Repository record

  5. Intracranial Monitoring after Severe Traumatic Brain Injury

    Donnelly, JosephUniversity of Cambridge2018

    … physiological insults. In this thesis, I explore cerebral insults due raised intracranial pressure, decreased cerebral perfusion pressure and impaired cerebral pressure reactivity after traumatic brain injury. In chapter 2, the importance of intracranial pressure, cerebral perfusion pressure and …

    cambridge Repository record

  6. Impact of Prolonged Sitting on Cognitive Function: Implications for Cardio-metabolic Risk

    Miller, Sabina2018

    … sitting negatively impacts cognitive function, cerebral perfusion, and central cardiovascular hemodynamics; and secondly, to test whether weight or physical activity status alters this response. <strong>Methods:</strong> Participants (N=20, age=26±7; BMI=30±7 kg/m<sup>2</sup>; 7 female) were …

    usm Repository record

  7. Predictive utility of neuropsychological measures and single photon emission computed tomography (SPECT) in the classification of cerebral perfusion deficits in dementia of the Alzheimer type (DAT)

    Moren, Mark G.1995

    … between neuropsychological tests scores and perfusion deficits, based upon measures of regional cerebral blood flow (rCBF) taken from the single photon emission computed tomography (SPECT) scans of patients suffering from dementia of the Alzheimer type (DAT). The study was designed to …

    ballstate-thes Repository record

  8. The Effect Of Body Position On Cerebral Bllod Flow, Cognition, Cardiac Output, Map,and Motor Function In Patients Undergoing Shoulder Surgery : Lateral Versus Beach Chair Position Under General Anesthesia

    Labonty, Kelley2014

    … <p>The Effect of Body Position on Changes in Cerebral Blood Flow, Cognition, and Motor Function in Patients Undergoing Shoulder Surgery: Lateral versus Beach Chair Position Under General Anesthesia</p> <p> By</p> <p> KELLEY LABONTY</p> <p> December 2013</p> <p>Advisor: Dr. Steven Cala</p> …

    wayne-thes Repository record

  9. The Effects of Dendro[60]Fullerene on Neurobehavioral Outcome and Cerebral Vascular Function After Traumatic Brain Injury

    Wynne, Karon ElizabethThe University of Texas Medical Branch at Galveston2016

    … in reactive oxygen species (ROS) that leads to cerebral vascular dysfunction. The reduction of ROS can preserve vascular function and lead to improved outcomes. The antioxidant carboxyfullerene nanoparticle, dendro[60]fullerene (DF-1) was examined as a potential therapy for TBI because of its …

    utmb Repository record

  10. Neurovascular implications of life-long exposure to contact in rugby union; the link to cognition

    Owens, Thomas2022

    … extent this relates to an accelerated decline in cerebral perfusion, a major risk factor for cognitive impairment and neurodegeneration remains to be explored.<br/><br/><b>Aims</b>: This thesis sought to: 1) determine the molecular, cerebrovascular and cognitive signatures of professional rugby …

    southwales Repository record

  11. Cerebral haemodynamics in man: Clinical and applied observations

    Imray, Christopher H. E.2005

    … oxygenated blood to function normally. Cerebral oxygen delivery is dynamic, and alters rapidly in response to changes in physiological and pathological stimuli. Interference with cerebral oxygen delivery, either as a result of decreased cerebral blood flow, decreased arterial oxygenation …

    southwales Repository record

  12. NON-INVASIVE MONITORING OF INTRACRANIAL PRESSURE USING TRANSCRANIAL DOPPLER ULTRASONOGRAPHY

    Cardim, Danilo AugustoUniversity of Cambridge2017

    … (TCD)-based non-invasive methods for ICP and cerebral perfusion pressure (CPP) monitoring. The thesis is divided into three sections: I) The accuracy of existing TCD-based nICP estimators in various scenarios of varying ICP (traumatic brain injury, rise of ICP during plateau waves, and rise in …

    cambridge Repository record

  13. Improving the Robustness of Perfusion Imaging with Arterial Spin Labeling Magnetic Resonance Imaging

    Tan, HuanWake Forest University2010

    Tissue function depends heavily on perfusion, a process which brings the blood supply to the tissue through the arterial system and removes the metabolic by-products via the veins. Abnormalities and disruptions in this process can have profound effects. Cerebral blood flow (CBF), a quantitative …

    wfu Repository record

  14. Regional Low Cerebral Blood Flow Predicts Leukoaraiosis Development at 18 Months in Patients with TIA and Minor Stroke

    Bernbaum, ManyaGraduate Studies2013

    … of this study was to investigate whether low cerebral blood flow (CBF) is associated with subsequent white matter hyperintensity (WMH) development in minor stroke and transient ischemic attack (TIA) patients. New WMH at 18 months were identified by comparing follow-up with baseline FLAIR, and …

    calgary Repository record

  15. Quantifying methodological uncertainties and navigating feasibilities in monitoring of cerebral autoregulation - Towards individualised management of TBI.

    Beqiri, ErtaUniversity of Cambridge2024

    … taking advantage of such technologies like cerebral autoregulation (CA) monitoring, has the potential to improve outcomes by tailoring interventions to the unique physiological responses of each patient. However, a significant barrier to the widespread clinical use of CA-based metrics is the …

    cambridge Repository record

  16. Modeling and estimation for non-invasive monitoring of intracranial pressure and cerebrovascular autoregulation

    Kashif, Faisal M. (Faisal Mahmood)Massachusetts Institute of Technology2011

    … innate ability of the vasculature to maintain cerebral blood flow in the face of changes in cerebral perfusion pressure. Cerebrovascular autoregulation is often impaired in patients with brain trauma or stroke, and also in pre-term neonates, as their cerebrovascular system is not fully matured. …

    mit Repository record

  17. Pressure, Compliance, and Autoregulation Studies in Intracranial Dynamics

    Pelah, AdamUniversity of Cambridge2024

    … for the physiological relevance of the optimal cerebral perfusion pressure paradigm, CPPopt, and further demonstrated its potential, alongside CPP-oriented therapy, as clinical tools. Two novel indices were developed: UBP, the compensatory reserve upper breakpoint, which may serve as an …

    cambridge Repository record

  18. Impact of secondary insults on the outcome of paediatric traumatic brain injury : a retrospective cross sectional study at the Red Cross Children’s Hospital, Cape Town

    Mogere, EdwinDepartment of Medicine2013

    … of hypoxia, hypotension, raised ICP, and low cerebral perfusion pressure (CPP). ICP parameters included initial ICP, mean ICP in the first 24 hours, mean ICP overall, peak ICP, mean ICP over 20 mmHg, and episodes of ICP over 20 mmHg. Hypotension was defined by age †and height †adjusted …

    cape-town Repository record

  19. The effect of induced normothermia on the outcomes of severe traumatic brain injury patients at Boston Medical Center

    Sturzoiu, Tudor2015

    … 0.0001). Average intracranial pressure (ICP) and cerebral perfusion pressure (CPP) were not different between the two groups, although mean arterial pressure (MAP) was (p = 0.84; p = 0.08; p = 0.02, respectively). Mortality was lower in the case group by hospital discharge (p = 0.007) and patients …

    bu Repository record

  20. The Measurement and Interpretation of Intracranial Pressure

    Saxena, UtkarshResearchSpace@Auckland2018

    … matching increases in blood pressure, such that cerebral perfusion pressure remained almost constant. This implied that within a rigid cranium, the cerebral circulation is limited in its ability to expand and accommodate an increase in blood volume. Thus, making blood supply pressure or cerebral …

    auckland-ms Repository record

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