An integrated PET-SPECT small animal imager: preliminary results

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

Open link

Publication date

January 2000

DOI

10.1109/23.873012

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

ISSN

0018-9499

Citation count (estimate)

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/mu Ci at the centre. The scanner is based on four matrices of 400 YAP:Ce finger crystals (2x2x30 mm(3) 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 0.15mm 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...