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Automated Least-Squares Calibration of the Coregistration Parameters for a Micro PET-CT System

Bing Feng,Shikui Yan,Mu Chen,Derek W. Austin,Junjun Deng,Robert A. Mintzer

IEEE Transactions on Nuclear Science（2011）

Cited 10|Views14
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Abstract
PET-CT coregistration parameters can be derived from PET and CT images of a four-point-source calibration phantom for a micro PET-CT scanner. An automated segmentation method has been developed, based on thresholding and application of constraints on the sizes of point sources in the images. After point sources are identified on PET and CT images, coregistration is performed using an analytic rigi...
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Key words
Positron emission tomography,Computed tomography,Calibration,Phantoms,Animals,Accuracy
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