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Estimating linear functionals of a PET image

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2 Author(s)
Bickel, P.J. ; Dept. of Stat., California Univ., Berkeley, CA, USA ; Ritov, Y.

The authors discuss the effect of having a finite number of detectors on the estimation of a bounded linear functional of a PET image. They argue that the functional should be estimated directly from the detector counts and give an estimate of the effect of the binning of the counts to order D-2, where D is the number of detectors. The authors then suggest an estimator that includes a data determined bias correction reducing the bias to o(D-2)

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Medical Imaging, IEEE Transactions on  (Volume:14 ,  Issue: 1 )