Calibration of an ultrasound tomography system for medical imaging with 2D contrast-source inversion
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Date
2013-04-03
Authors
Faucher, Gabriel Paul
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Abstract
This dissertation describes two possible methods for the calibration of an ultrasound
tomography system developed at University of Manitoba's Electromagnetic Imaging
Laboratory for imaging with the contrast-source inversion algorithm. The calibration
techniques are adapted from existing procedures employed for microwave tomography.
A theoretical model of these calibration principles is developed in order to provide a
rationale for the effectiveness of the proposed procedures. The applicability of such an
imaging algorithm and calibration methods in the context of ultrasound are discussed.
Also presented are 2D and 3D finite-difference time-domain update equations for the
simulation of acoustic wave propagation in inhomogeneous media. Details regarding
the application of an absorbing boundary-condition, point-source modelling and the
treatment of penetrable objects are included in this document.
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Keywords
ultrasound, imaging, medical, calibration, inversion, fdtd, fem, csi, tomography, contrast-source, breast, cancer, acoustic, inhomogeneous, acoustical, modelling