METHOD FOR PET ATTENUATION CORRECTION
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United States of America Patent
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Issued Date -
Apr 28, 2016
app pub date -
Apr 10, 2015
filing date -
Oct 23, 2014
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Abandoned
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Abstract
The present disclosure illustrates a method for PET attenuation correction, and the method includes the steps: computing linear attenuation coefficients and mean CT numbers of water, various iodine contrasts and a plant oil-based phantom, to generate energy-mapping curve data by ANN; providing an object to be detected, and reconstructing CT data to generate a CT image after the object is scanned by CT and PET respectively; introducing the CT numbers of pixels the CT image into the energy-mapping curve to generate an attenuation map; computing the attenuation map to generate an attenuation correction factor; multiplying the PET image by the attenuation correction factor to generate a corrected PET sinogram, and reconstructing the corrected PET sinogram to generate a corrected PET image.
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