Medical Physics Seminar – Monday, April 23, 2012
X-ray Phase Contrast Imaging: Moving Toward Clinical Implementation
Nick Bevins (student of Dr. Guang-Hong Chen)
Research Assistant, Department of Medical Physics, UW-School of Medicine & Public Health, Madison, WI - USA -
Interest in phase sensitive x-ray imaging techniques has grown rapidly in recent years. Numerous techniques have been demonstrated to measure the phase shift of x-rays as they pass through matter. One such method, grating-based interferometry, has shown the most promise for clinical utility. This presentation will cover the basics of x-ray phase imaging with a grating interferometer. It will also discuss further characterization and optimization of the system that is necessary for moving the technique from the benchtop to the clinic. This includes measuring the effects of beam hardening, improving the phase retrieval technique, and determining the best method for grating fabrication.