Method and device of obtaining beam hardening correction coefficient for carrying out beam hardening correction on computed tomography data

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United States of America Patent

PATENT NO 9715744
APP PUB NO 20160171725A1
SERIAL NO

14567557

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Abstract

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The present invention relates to a method and device of obtaining a beam hardening correction coefficient for carrying out beam hardening correction on computed tomography data. The method includes the steps of: firstly, acquiring an original reconstructed image and an original sinogram of an object of a particular size; secondly, obtaining an error-reduced sinogram after processing the original reconstructed image by error reduction; thirdly, sampling and calculating an average value of the original sinogram and an average value of the error-reduced sinogram; fourthly, optimizing the original sinogram according to the error-reduced sinogram to determine a coefficient vector of optimization function for the object of the particular size; and finally fitting the coefficient vector of the optimization function of the original sinogram to obtain the beam hardening correction coefficient for the object of the particular size.

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Patent Owner(s)

Patent OwnerAddress
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY CO LLC3000 NORTH GRANDVIEW BOULEVARD-W-710 WAUKESHA WI 53188

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Dan BeiJing, CN 315 1390
Qu, Yanling Beijing, CN 3 3
Wang, Xueli BeiJing, CN 33 77

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