The microPET Primate 4 ring system (P4) is a small animal PET tomograph with an 8cm axial extent, 18cm transaxial field of view (FOV) and an animal port of 22cm diameter. The system is comprised of 168 detectors, each with an 8×8 array of 2.2×2.2×l0mm LSO crystals, for 32 crystal rings with a detector diameter of 26cm. The crystals of each detector are coupled to a Hamamatsu R5900-C8 position sensitive photomultiplier tube (PMT) via a 10cm long fiber bundle. The reconstructed image resolution was measured with an F-18 line source positioned at different radial offsets [0-5cm] across the FOV. The reconstructed radial and tangential components of the spatial resolution range from 2.3mm at the center to 3.0mm at 5 cm radial offset. The tomograph has peak system sensitivity of 1.7% at the center FOV with an energy window of 250-700 keV. The energy resolution of the individual crystal elements ranges from 22 to 34%, with a mean of 26%. A miniature Derenzo and a monkey brain phantom were scanned and reconstructed with filtered back projection to illustrate the capabilities of the tomograph. Randoms subtraction was performed on all acquisitions.
|State||Published - 2000|
|Event||2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France|
Duration: Oct 15 2000 → Oct 20 2000
|Conference||2000 IEEE Nuclear Science Symposium Conference Record|
|Period||10/15/00 → 10/20/00|