An integrated PET-SPECT small animal imager: preliminary results

Author

Guerra, A. Del ; Damiani, C. ; Domenico, G. Di ; Motta, A. ; Giganti, M. ; Marchesini, R. ; Piffanelli, A. ; Sabba, N. ; Sartori, L. ; Zavattini, G.

Author_Institution

Dipt. di Fisica, Pisa Univ., Italy

Volume

1

fYear

1999

fDate

1999

Firstpage

541

Abstract

We have successfully built and characterised a small animal PET based on 4 rotating detectors with a spatial resolution <2 mm over its field of view and a sensitivity of 640 cps/μCi at the centre. The scanner is based on four matrices of 400 YAP:Ce finger crystals (2×2×30 mm³ each) coupled to Position Sensitive PhotoMultipliers (Hamamatsu R2486-06.) We have now applied two high resolution collimators to two opposite detectors, hence realising an integrated PET-SPECT scanner for small animals. The collimators are made of lead with 20 mm long, 0.6 mm hexagonal holes with 0.15 mm septa. The read-out and data acquisition system are handled by NIM-CAMAC standard electronics. The Field Of View (FOV) of the tomograph has a diameter of 4 cm and an axial length of 4 cm in both PET and SPECT configuration which is appropriate for mice and rat studies

Keywords

CAMAC; cerium; positron emission tomography; single photon emission computed tomography; solid scintillation detectors; yttrium compounds; NIM-CAMAC standard electronics; YAP:Ce; YAP:Ce finger crystals; YAlO3:Ce; axial length; data acquisition system; integrated PET-SPECT scanner; integrated PET-SPECT small animal imager; rotating detectors; spatial resolution; Animals; Collimators; Crystals; Data acquisition; Fingers; Mice; Photomultipliers; Position sensitive particle detectors; Positron emission tomography; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1999. Conference Record. 1999 IEEE

Conference_Location

Seattle, WA

ISSN

1082-3654

Print_ISBN

0-7803-5696-9

Type

conf

DOI

10.1109/NSSMIC.1999.842543

Filename

842543