METHOD FOR REMOVING NOISE OF PET SIGNAL USING MODELING IN PET-MRI FUSION DEVICE AND PET SYSTEM IN PET-MRI FUSION DEVICE USING THE SAME
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
Aug 30, 2010
filing date -
Apr 30, 2010
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Abandoned
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Abstract
Provided is a method for removing noise of a positron emission tomography (PET) signal in a PET-magnetic resonance imaging (MRI) fusion device without using an MRI radio frequency (RF) shield that degrades image quality. The method includes: (a1) converting a PET analog signal into a digital signal having a predetermined sampling frequency; (b1) determining whether the resulting PET digital signal is to be included in image reconstruction based on modeling using sampling points of the PET digital signal or an integration value of the PET digital signal; and (c1) extracting only the PET digital signal that will be included in image reconstruction. The method allows acquisition of molecular-level images without declined performance of a PET detector.
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