ESTIMATING LINEAR FUNCTIONALS OF A PET IMAGE

Authors
BICKEL PJ RITOV Y
Citation
Pj. Bickel et Y. Ritov, ESTIMATING LINEAR FUNCTIONALS OF A PET IMAGE, IEEE transactions on medical imaging, 14(1), 1995, pp. 81-87
Citations number
12
Categorie Soggetti
Engineering, Biomedical","Radiology,Nuclear Medicine & Medical Imaging
Journal title
IEEE transactions on medical imaging → ACNP
ISSN journal
02780062
Volume
14
Issue
1
Year of publication
1995
Pages
81 - 87
Database
ISI
SICI code
0278-0062(1995)14:1<81:ELFOAP>2.0.ZU;2-J
Abstract
We discuss the effect of having a finite number of detectors on the es timation of a bounded linear functional of a PET image. We argue that the functional should be estimated directly from the detector counts a nd give an estimate of the effect of the binning of the counts to orde r D-2, where D is the number of detectors. We then suggest an estimato r that includes a data determined bias correction reducing the bias to o(D-2).