Abstract
We are currently developing microPET II, a second-generation dedicated PET scanner for small animal imaging. The design goal is to achieve ∼1 mm3 volumetric resolution, a larger axial field of view, and higher system sensitivity than our original prototype system. To minimize development time and cost, Monte Carlo simulation was used to determine appropriate dimensions for the detector crystals and for the system geometry. Simulations of the existing microPET system were compared to its measured performance to estimate errors in the simulations. Measurements from a pair of prototype detectors (12×12 array of 1×1×10 mm LSO crystals) agreed well with the simulation and provided a validation of the system design. The chosen design for microPET II has 0.975×0.975×12.5 mm LSO crystals arranged in a ring of 7.2 cm radius, and a 4.83 cm axial field of view. These specifications provide a volumetric image resolution <1.05 mm3 within 10 mm radius from the CFOV. The absolute sensitivity is estimated to be 3.6 times that of the current microPET. With 2.7 times the axial field of view, microPET II will have up to 9.7 times the total efficiency of the existing microPET system for whole body studies in mice and rats.
| Original language | English (US) |
|---|---|
| Title of host publication | IEEE Nuclear Science Symposium and Medical Imaging Conference |
| Editors | D. Merelli, J. Surget, M. Ulma |
| Volume | 3 |
| State | Published - 2000 |
| Externally published | Yes |
| Event | 2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France Duration: Oct 15 2000 → Oct 20 2000 |
Other
| Other | 2000 IEEE Nuclear Science Symposium Conference Record |
|---|---|
| Country/Territory | France |
| City | Lyon |
| Period | 10/15/00 → 10/20/00 |
ASJC Scopus subject areas
- Computer Vision and Pattern Recognition
- Industrial and Manufacturing Engineering