Three dimensional reconstruction of PET data from a multi-ring camera

Author

Townsend, D.W. ; Sprinks, T. ; Jones, T. ; Geissbuhler, A. ; Defrise, M. ; Gilardi, M.C. ; Heather, J.

Author_Institution

Hammersmith Hospital, London, UK

Volume

36

Issue

1

fYear

1989

fDate

2/1/1989 12:00:00 AM

Firstpage

1056

Lastpage

1065

Abstract

In order to assess the potential of a multiring camera for three-dimensional PET (positron emission tomography) the septa were removed from a commercially produced PET camera (ECAT 931/08-12). An approximate reconfiguration was made to the data acquisition subsystem to acquire the full set of 64 sinograms containing all permitted lines of response between pairs of detectors. A number of different phantoms were imaged with this camera configuration, and one fluorodopa study was performed with a healthy volunteer. The authors discuss the results of these studies, and describe the back-projection and filtering procedure that has been adopted in order to incorporate the maximum amount of cross-plane data in the reconstruction. The results are compared with the same data reconstructed using the standard two-dimensional approach (i.e. for the direct and cross planes only), and with data collected for the same phantoms with the septa in place

Keywords

biomedical electronics; computerised picture processing; computerised tomography; data acquisition; radioisotope scanning and imaging; PET; back-projection; data acquisition subsystem; filtering procedure; fluorodopa study; multiring camera; phantoms; positron emission tomography; septa; sinograms; Cameras; Detectors; Electromagnetic scattering; Hospitals; Image reconstruction; Imaging phantoms; Nuclear medicine; Particle scattering; Positron emission tomography; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.34605

Filename

34605