TY - GEN
T1 - VrPET/CT:Development of a rotating multimodality scanner for small-animal imaging
AU - Lage, Eduardo
AU - Vaquero, Juan José
AU - Sisniega, Alejandro
AU - España, Samuel
AU - Tapias, Gustavo
AU - Udías, Ángel
AU - García, Verónica
AU - Rodríguez-Ruano, Alexia
AU - Desco, Manuel
PY - 2008
Y1 - 2008
N2 - This work reports on the development and evaluation of the PET component of a PET/CT system for small-animal in-vivo imaging. The PET and CT subsystems are assembled in a rotary gantry in such a way that the center of rotation for both imaging modalities is mechanically aligned. The PET scanner configuration is based on 2 detector modules, each of which consist of 2 flat-panel type PS-PMTs (Hamamatsu, H8500) and 2 (30 x 30 elements) LYSO arrays. The dimension of the crystal matrix elements are 1.4 x 1.4 mm2 in cross section and 12 mm in depth. The VrPET detector modules are positioned in opposite sides of a 140 mm diameter ring, providing a transaxial field of view of 86.6 mm diameter and an axial field of view of 45.6 mm. The experimental results obtained in the performance tests are transaxial resolution of 1.5 mm FWHM in the CFOV, and the axial resolution of 2.3 mm FWHM. The absolute coincidence sensitivity is 2.22 % for a coincidence window of 6 ns (100-700 keV). The imaging capability of the PET unit is demonstrated on phantom and animal studies.
AB - This work reports on the development and evaluation of the PET component of a PET/CT system for small-animal in-vivo imaging. The PET and CT subsystems are assembled in a rotary gantry in such a way that the center of rotation for both imaging modalities is mechanically aligned. The PET scanner configuration is based on 2 detector modules, each of which consist of 2 flat-panel type PS-PMTs (Hamamatsu, H8500) and 2 (30 x 30 elements) LYSO arrays. The dimension of the crystal matrix elements are 1.4 x 1.4 mm2 in cross section and 12 mm in depth. The VrPET detector modules are positioned in opposite sides of a 140 mm diameter ring, providing a transaxial field of view of 86.6 mm diameter and an axial field of view of 45.6 mm. The experimental results obtained in the performance tests are transaxial resolution of 1.5 mm FWHM in the CFOV, and the axial resolution of 2.3 mm FWHM. The absolute coincidence sensitivity is 2.22 % for a coincidence window of 6 ns (100-700 keV). The imaging capability of the PET unit is demonstrated on phantom and animal studies.
KW - Positron emission tomography (PET)
KW - Small animal imaging
KW - X-ray computed tomography (CT)
UR - http://www.scopus.com/inward/record.url?scp=67649206968&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67649206968&partnerID=8YFLogxK
U2 - 10.1109/NSSMIC.2008.4774465
DO - 10.1109/NSSMIC.2008.4774465
M3 - Conference contribution
AN - SCOPUS:67649206968
SN - 9781424427154
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 4671
EP - 4674
BT - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
T2 - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Y2 - 19 October 2008 through 25 October 2008
ER -