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Full-Text Articles in Science and Mathematics Education
Infrared Radiography: Modeling X-Ray Imaging Without Harmful Radiation, Otto Zietz, Elliot E. Mylott, Ralf Widenhorn
Infrared Radiography: Modeling X-Ray Imaging Without Harmful Radiation, Otto Zietz, Elliot E. Mylott, Ralf Widenhorn
Physics Faculty Publications and Presentations
Planar x-ray imaging is a ubiquitous diagnostic tool and is routinely performed to diagnose conditions as varied as bone fractures and pneumonia. The underlying principle is that the varying attenuation coefficients of air, water, tissue, bone, or metal implants within the body result in non-uniform transmission of x-ray radiation. Through the detection of transmitted radiation, the spatial organization and composition of materials in the body can be ascertained. In this paper, we describe an original apparatus that teaches these concepts by utilizing near infrared radiation and an up-converting phosphorescent screen to safely probe the contents of an opaque enclosure.
Developing And Assessing Curriculum On The Physics Of Medical Instruments, Warren Christensen, James K. Johnson, Grace R. Van Ness, Elliot E. Mylott, Justin C. Dunlap, Elizabeth A. Anderson, Ralf Widenhorn
Developing And Assessing Curriculum On The Physics Of Medical Instruments, Warren Christensen, James K. Johnson, Grace R. Van Ness, Elliot E. Mylott, Justin C. Dunlap, Elizabeth A. Anderson, Ralf Widenhorn
Physics Faculty Publications and Presentations
Undergraduate educational settings often struggle to provide students with authentic biologically or medically relevant situations and problems that simultaneously improve their understanding of physics. Through exercises and laboratory activities developed in an elective Physics in Biomedicine course for upper-level biology or pre–health majors at Portland State University, we aim to teach fundamental physical concepts, such as light absorption and emission and atomic energy levels, through analysis of biological systems and medical devices. The activities address the properties of electromagnetic waves as they relate to the interaction with biological tissue and make links between physics and biomedical applications such as microscopy …