Medicine and Health Sciences Commons^™

Optimization In Mri Experiment Design And Image Reconstruction, Mark Armstrong

Electronic Theses and Dissertations

Magnetic Resonance Imaging (MRI) is a non-invasive imaging modality with numerous applications due to its flexible contrast and high resolution. Recent improvements in computation power have enabled optimizations which were previously out of reach. This has led to improvements in image reconstruction and experiment design.

Compressed sensing (CS) allows for images to be reconstructed using less data than is normally required leading to faster image acquisitions. In this thesis, CS is applied to experiments tracking individual cells in time lapse MRI. The faster image acquisition with CS reduces blurring from cell motion, improving the Contrast-to-Noise ratio (CNR) of moving cells …

Virtual Versus Face-To-Face Cognitive Behavioral Treatment Of Depression: Meta-Analytic Test Of A Noninferiority Hypothesis And Men’S Mental Health Inequities, Carly M. Charron, Kevin M. Gorey

Social Work Publications

Global rates of depression have increased significantly since the beginning of the COVID-19 pandemic. It is unclear how the recent shift of many mental health services to virtual platforms has impacted service users, especially for the male population which are significantly more likely to complete suicide than women. This paper presents the findings of a rapid meta-analytic research synthesis of 17 randomized controlled trials on the relative efficacy of virtual versus traditional face-to-face cognitive behavioral therapy (CBT) in mitigating symptoms of depression. Participants’ aggregated depression scores were compared upon completion of the therapy (posttest) and longest follow-up measurement. The results …

Online Social Networking Among Clinically Depressed Young People: Scoping Review Of Potentially Supportive Or Harmful Behaviors, Carolyn L. Elias, Kevin M. Gorey

Social Work Publications

Online social networking sites are ubiquitous and prevalently used by young people. The COVID-19 pandemic demonstrated the potential for such sites to bring isolated people together to support their mental health. Virtual communications, however, are not without risks. Substantial knowledge exists on attendant risks and protections among the general population, but much less seems known about their effects among clinical populations. This scoping review mapped the novel knowledge and knowledge gaps related to online social networking experiences and perceptions of depressed young people, adolescents to emergent adults. It also explored moderators of their social networking supports versus harms. A broad …

Relative Effectiveness Of Online Cognitive Behavioural Therapy With Anxious Or Depressed Young People: Rapid Review And Meta-Analysis, Shikara T. Howes, Kevin M. Gorey, Carly M. Charron

Social Work Publications

Global estimates suggest that 25% and 20% of youth have reported elevated symptoms of depression and anxiety, respectively, since the beginning of the COVID-19 pandemic compared to baseline functioning (Racine et al., 2021). Cognitive behavioural therapy (CBT) has been found to significantly benefit young people experiencing anxiety and depression (Christ et al., 2020). Pandemic-related protocols have led many mental health services to shift to online platforms. We wondered about the comparative efficacy of online versus offline CBT for young people between the ages of 10-25. We responded with a rapid review and meta-analysis of eight randomized controlled trial outcomes. The …