CdZnTe detectors for the positron emission tomographic imaging of small animals

Author

Drezet, Arnaud ; Monnet, Olivier ; Montémont, Guillaume ; Rustique, Jacques ; Sanchez, Gérard ; Verger, Loïck

Author_Institution

LETI-CE Recherches Technol., Grenoble, France

Volume

7

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

4564

Abstract

We report the timing performances between two cadmium zinc telluride (CZT) detectors equipped with a specific electrode geometry and a dedicated electronic setup for positron emission tomography (PET) application. The measured coincidence times reach 2,6ns Full Width at Half Maximum (FWHM) for a 500V bias voltage and 300keV energy threshold. Subsequently, a simulation study was carried out to assess the spatial and efficiency performances of these detectors which allow the Depth Of Interaction (DOI) measurement. Preliminary results show that the proposed design could reach a resolution better (1mm Full Width at Half Maximum instead of 2,5mm in the middle of the field of view) than what is achieved with the standard PET scintillation detectors. Experimental confirmation of this result is in progress.

Keywords

coincidence techniques; positron emission tomography; semiconductor counters; 500 V; CdZnTe detectors; Depth Of Interaction measurement; coincidence time; electrode geometry; positron emission tomographic imaging; small animals; standard PET scintillation detectors; Animals; Cadmium compounds; Detectors; Electrodes; Energy measurement; Geometry; Positron emission tomography; Radioactive decay; Timing; Zinc compounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466899

Filename

1466899