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Articles 1 - 5 of 5
Full-Text Articles in Medicine and Health Sciences
The Combined Effects Of Physical Exercise And Cognitive Training On Gait Speed And Primary Motor Cortex Metabolism In Individuals With Mild Cognitive Impairment: A 1h-Mrs Analysis, Jack Thomas Emsey Elkas
The Combined Effects Of Physical Exercise And Cognitive Training On Gait Speed And Primary Motor Cortex Metabolism In Individuals With Mild Cognitive Impairment: A 1h-Mrs Analysis, Jack Thomas Emsey Elkas
Electronic Thesis and Dissertation Repository
Mild cognitive impairment (MCI) is a transitional stage before dementia. Altered gait in MCI has been associated with progression to dementia. Using magnetic resonance spectroscopy, a relationship between primary motor cortex (M1) neurochemistry and dual task gait speed has been reported in MCI. Interventional research suggests exercise, cognitive training, and vitamin D supplementation may benefit MCI, yet the combined effect of these treatments on gait speed and M1 metabolism is unknown. Participants with MCI (N=75) were assigned to one of five intervention arms and dual task cost on gait speed and M1 metabolism was assessed before and five months after …
Association Of Post-Traumatic Stress Disorder Exposure And Treatment In Pregnancy With Pregnancy, Obstetric And Neonatal Outcomes, Natalie Zitoun
Association Of Post-Traumatic Stress Disorder Exposure And Treatment In Pregnancy With Pregnancy, Obstetric And Neonatal Outcomes, Natalie Zitoun
Electronic Thesis and Dissertation Repository
A particular condition for which there is a dearth of pregnancy information is Post-Traumatic Stress disorder (PTSD). This thesis aimed to evaluate PTSD exposure and treatment in pregnancy. Our first study was a systematic review, meta-analysis, and GRADE assessment that reported associations between maternal PTSD exposure with pregnancy, obstetric, and neonatal outcomes. Our second study was a prospective evaluation of pregnancy outcomes after prazosin exposure in the first trimester of pregnant patients who were counselled at the Fetal Risk Assessment from Maternal Exposures (FRAME) clinic. Our review and analysis found positive associations between PTSD in pregnancy and some adverse pregnancy …
Improving The Reliability And Accessibility Of Ct Perfusion Imaging In Acute Ischemic Stroke, Kevin J. Chung
Improving The Reliability And Accessibility Of Ct Perfusion Imaging In Acute Ischemic Stroke, Kevin J. Chung
Electronic Thesis and Dissertation Repository
CT perfusion (CTP) imaging is a validated treatment decision support tool in acute ischemic stroke. Automated analysis of CTP cerebral blood flow (CBF) and Tmax maps produces estimates of ischemic core and penumbra volumes used to determine target mismatch profiles for treatment. However, availability and utilization of CTP is low due to diagnostic variability between CTP software and technical, logistical, and radiation dose considerations that may limit its routine adoption. The objective of this doctoral research was to improve the reliability and accessibility of CTP by (1) improving diagnostic agreement between CTP software, (2) enabling perfusion imaging with standard acute …
An Evaluation Of A Deep Learning Approach For Radiation Dose Reduction In 18f-Fdg Pet/Mri Pediatric Epilepsy Imaging, Confidence Raymond
An Evaluation Of A Deep Learning Approach For Radiation Dose Reduction In 18f-Fdg Pet/Mri Pediatric Epilepsy Imaging, Confidence Raymond
Electronic Thesis and Dissertation Repository
Epilepsy is a degenerative brain disease characterized by abruption of neural activities that result in seizures. The onset of epileptic seizures are usually from a primary source - the epileptogenic foci (EF) which could be distributed to nearby neurons and tissues. Accurate localization of EF is critical in epilepsy cases where drug treatment has failed, and surgery is indicated to resect the EF to alleviate seizure. Typically, hybrid positron emission tomography (PET) and computed tomography (CT) imaging are performed to functionally localize the EF in drug-resistant epilepsy for surgical planning when anatomical abnormalities representing the EF cannot be identified on …
Microvascular Responsiveness To Cardiopulmonary Bypass, Michael O'Neil
Microvascular Responsiveness To Cardiopulmonary Bypass, Michael O'Neil
Electronic Thesis and Dissertation Repository
Cardiopulmonary bypass can result in multiple organ failure due to mechanisms of ischemia reperfusion injury and the systemic inflammatory response syndrome. The primary objective of this thesis was to investigate and monitor the microvasculature in cardiac surgery patients using multiple methodologies and real-time monitoring techniques. The purpose of our first study was to determine whether pulsatile blood flow during bypass improves microvascular perfusion compared to non-pulsatile flow. We found that changes in sublingual mucosal microcirculation using orthogonal polarization spectral imaging correlate with indices of thenar muscle tissue oxygen saturation and its recovery during a vascular occlusion test using near-infrared spectroscopy …