Electrical property enhanced tomography (EPET) apparatus and method
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United States of America Patent
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Feb 18, 2003
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N/A
app pub date -
Mar 8, 2000
filing date -
Sep 11, 1997
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Abstract
Enhanced information on the electrical properties of the subregions of a sample is generated by an enhanced tomography (EPET) apparatus connected to a tomographic device, wherein the EPET apparatus holds a voltage constant and measures the electrical current of the sample inserted within the EPET apparatus. A matching medium is applied to the sample such that when the sample is placed within an electromagnetic field generated by the EPET apparatus, the matching medium contacts the segmented sensor plates of the EPET apparatus and allows the detection of the net total charges Q on the surface of the sample. The EPET apparatus uses these net total charges Q in the calculation of the additional information on the electrical properties of the sample by using the scale factor method or the iterative correction method. The EPET apparatus and method has application in the medical imaging field, such as in the obtaining of enhanced dielectric constant and conductivity electrical properties values related to the imaging of the interior of the human body, e.g., in the determination of whether tissue is cancerous, dead or healthy.
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