Maximum-likelihood estimation of 3D event position in monolithic scintillation crystals: Experimental results

Author

Moore, S.K. ; Hunter, W.C.J. ; Furenlid, L.R. ; Barrett, H.H.

Author_Institution

Univ. of Arizona, Tucson

Volume

5

fYear

2007

fDate

Oct. 26 2007-Nov. 3 2007

Firstpage

3691

Lastpage

3694

Abstract

We present a simple 3D event position-estimation method using raw list-mode acquisition and maximum-likelihood estimation in a modular gamma camera with a thick (25 mm) monolithic scintillation crystal. This method involves measuring 2D calibration scans with a well-collimated 511 keV source and fitting each point to a simple depth-dependent light distribution model. Preliminary results show that angled collimated beams appear properly reconstructed.

Keywords

calibration; gamma-ray detection; maximum likelihood estimation; positron emission tomography; single photon emission computed tomography; solid scintillation detectors; 2D calibration scans; 3D event position; PET; SPECT; depth-dependent light distribution model; maximum likelihood estimation; modular gamma camera; monolithic scintillation crystals; raw list-mode acquisition; slant-beam reconstruction; Boring; Calibration; Cameras; Collimators; Crystals; Hardware; Maximum likelihood detection; Maximum likelihood estimation; Solid scintillation detectors; Tomography; Depth of interaction (DOI); Emission tomography; PET; SPECT; gamma camera; gamma ray; maximum likelihood; monolithic scintillation crystal;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE

Conference_Location

Honolulu, HI

ISSN

1095-7863

Print_ISBN

978-1-4244-0922-8

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2007.4436923

Filename

4436923