Method and apparatus for singles spectrum estimation and for dead-time correction in positron emission tomography (PET)

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United States of America Patent

PATENT NO 11241211
APP PUB NO 20210282732A1
SERIAL NO

16816953

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A method and apparatus is provided to perform dead-time correction in a positron emission tomography (PET) by estimating a full singles spectrum using a scatter model. The scatter model can use a Monte Carlo method, a radiation transfer equation method, an artificial neural network, or an analytical expression. The scatter model simulates scatter based on an emission image/map and an attenuation image/map to estimate Compton scattering. In the full singles spectrum, the singles counts with energies less than 511 keV are determined from the simulated scatter. The attenuation image can be generated based on X-ray computed tomography or based on applying a joint-estimation to PET data.

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CANON MEDICAL SYSTEMS CORPORATION1385 SHIMOISHIGAMI OTAWARA-SHI TOCHIGI 324-8550

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Balakrishnan, Karthikayan Vernon Hills, US 9 59
Lu, Yujie Vernon Hills, US 29 64
Qi, Wenyuan Vernon Hills, US 44 52
Qiang, Yi Vernon Hills, US 41 55

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