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Finite-difference time-domain analysis of microwave heart monitoring
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Dissertation
Finite-difference time-domain analysis of microwave heart monitoring
2005
Overview
Life signal detection is an old concept with contemporary applications, including predicting cardiac arrhythmia from heart signals, and helping in the search for lost survivors. The underlying principle of the microwave heart monitoring is based on detecting the changes in the reflected microwaves caused by the movement of the chest wall in response to respiration and ventricular activities. This thesis seeks to analyze the induced current distribution and specific-absorption rate (SAR) using the finite-difference time-domain (FDTD) method on an accurate two-dimensional thoracic model provided by the Visual Human Project (VHP). Additional test cases are analyzed which model the two-dimensional heart model in different media, such as air, water, and lungs. The signal used in all simulations is a 1V/m 10GHz TM plane wave. The discussion of the two-dimensional results yields a preliminary assessment of microwave-tissue interaction in the process of heart monitoring at microwave frequencies.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
9780494226834, 0494226838
