Performance evaluation of the fully engineered YAP-(S)PET scanner for small animal imaging

Author

Del Guerra, Alberto ; Bartoli, Antonietta ; Belcari, Nicola ; Herbert, Deborah ; Motta, Alfonso ; Vaiano, Angela ; Di Domenico, Giovanni ; Sabba, Nicola ; Moretti, Elena ; Zavattini, Guido ; Lazzarotti, Marco ; Sensi, Luca ; Larobina, Michele

Author_Institution

Dept. of Phys., Pisa Univ.

Volume

5

fYear

2004

fDate

16-22 Oct. 2004

Firstpage

2990

Lastpage

2994

Abstract

At the Department of Physics of the University of Pisa, a new and fully engineered version of the YAP-(S)PET small animal scanner has been recently installed. The new YAP-(S)PET is able to perform both PET and SPECT studies on small animals. The scanner is made up of four heads: each one is composed of a 4times4 cm² YAlO₃:Ce (or YAP:Ce) matrix of 20times20 elements, 2times2times25 mm³ each, coupled to a PS-PMT (Hamamatsu R2486). The four modules are positioned on a rotating gantry. The switching to the SPECT modality is easily made by mounting a high resolution parallel hole (0.6 mm Phi, 0.15 mm septum) lead collimator in front of each crystal. This paper reports the performance of the system in terms] of absolute sensitivity and spatial resolution for both PET and SPECT modalities. The scatter fraction and noise-equivalent count rate (NEC) for a mouse phantom for different energy windows have been measured. Images of phantoms and animals are also presented

Keywords

image resolution; image scanners; phantoms; photomultipliers; single photon emission computed tomography; PS-PMT; SPECT; YAP-(S)PET small animal scanner; YAlO₃:Ce matrix; high resolution parallel hole; lead collimator; mouse phantom; noise-equivalent count rate; rotating gantry; scatter fraction; small animals; spatial resolution; Animals; Collimators; Head; Imaging phantoms; Mice; National electric code; Physics; Positron emission tomography; Scattering; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2004 IEEE

Conference_Location

Rome

ISSN

1082-3654

Print_ISBN

0-7803-8700-7

Electronic_ISBN

1082-3654

Type

conf

DOI

10.1109/NSSMIC.2004.1466313

Filename

1466313