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Biomedical Engineering and Bioengineering Commons™
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Full-Text Articles in Biomedical Engineering and Bioengineering
Characterization And Feasibility Of A Portable Oxygen Concentrator For Use With A Mass Casualty Ventilator, Paul Robert Williams
Characterization And Feasibility Of A Portable Oxygen Concentrator For Use With A Mass Casualty Ventilator, Paul Robert Williams
Boise State University Theses and Dissertations
The American Association for Respiratory Care has reported a need to stockpile 5,000-10,000 mass casualty ventilators with supplemental oxygen in preparation for pandemic emergencies (1). The American Medical Association specifies oxygen concentrators supply oxygen at 5 liters per minute at ≥90% purity (2). However, these design specifications may not be the most efficient use of system resources in portable oxygen concentrators using pressure swing adsorption. A testbed was developed to investigate the system performance of an oxygen concentrator while altering the system inlet and outlet pressures and flow rates. This investigation demonstrates that a more efficient portable oxygen concentrator, which …
Biomedical Photoacoustic Imaging Using Gas-Coupled Laser Acoustic Detection, Jami L. Johnson
Biomedical Photoacoustic Imaging Using Gas-Coupled Laser Acoustic Detection, Jami L. Johnson
Student Research Initiative
Several detection methods have been explored for photoacoustic and ultrasound imaging of biological tissues. Piezoelectric transducers are commonly used, which require contact with the sample and have limiting bandwidth characteristics. Interferometry detection exhibits improved bandwidth characteristics and resolution, yet generally require complicated optics and the incorporation of a contacting reflective medium. Here, we report the use of a noncontact photoacoustic and laser-ultrasound imaging system that does not require the use of a reflective layer. A simple, robust technique known as gas-coupled laser acoustic detection is used, which has previously been applied to composite material evaluation. This technique has the potential …