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Proceedings Paper

Simulating ultra-wideband imaging for the early detection of tissue injury
Author(s): Weihong Niu; Kelan Hlavaty; Daria Tanska; Nancy Tseng; Jia Li; Barbara Penprase
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Paper Abstract

Various medical imaging techniques exist to detect the early development of tissue damage. However, a widely commercialized device that can be easily used and is cost effective is still needed. Through a literature review, we examined ultrasound, microwave tomography, and ultra-wideband (UWB) technology. Out of these techniques, UWB is the most promising since it has the capability to detect small adjustments in dielectric properties, which can change with minor alterations in perfusion and internal pressure. These minor alterations are vital in detecting the onset of ischemia, which precedes many serious conditions affecting tissue health. In addition to its ability in detection, UWB also has the potential to become a widely accessible technology to hospitals. Using software called XFdtd, we simulated ultrawideband pulses propagating through planes designed to resemble tissue in its dielectric properties. After testing several sizes of the horn antenna and configurations for the wire and port, the antenna's near field was finally able to reach the distance necessary to penetrate the tissue model. The resulting graph of voltage versus time was generated from the received antenna signal and it will be compared to the graphs that result after the dielectric properties of the model have been changed to simulate tissue injury. Through this manipulation of the tissue model, the sensitivity and selectivity of UWB in measuring small fluctuations in perfusion can be determined. In this future work with XFdtd, we want to show that UWB is a novel and viable technique in detecting early tissue injury.

Paper Details

Date Published: 14 March 2009
PDF: 8 pages
Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 725813 (14 March 2009); doi: 10.1117/12.813898
Show Author Affiliations
Weihong Niu, Oakland Univ. (United States)
Kelan Hlavaty, Central Michigan Univ. (United States)
Daria Tanska, Univ. of Michigan (United States)
Nancy Tseng, Univ. of Michigan (United States)
Jia Li, Oakland Univ. (United States)
Barbara Penprase, Oakland Univ. (United States)

Published in SPIE Proceedings Vol. 7258:
Medical Imaging 2009: Physics of Medical Imaging
Ehsan Samei; Jiang Hsieh, Editor(s)

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