A small animal helical SPECT scanner
- Resource Type
- Conference
- Authors
- Mingshan Sun; Izaguirre, E.W.; Funk, T.; Hwang, A.B.; Carver, J.; Thompson, S.; Patt, B.E.; Parnham, K.B.; Vandehei, T.; Junqiang Li; Hasegawa, B.H.
- Source
- IEEE Nuclear Science Symposium Conference Record, 2005 Nuclear Science Symposium Nuclear Science Symposium Conference Record, 2005 IEEE. 4:2066-2069 2005
- Subject
- Nuclear Engineering
Power, Energy and Industry Applications
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Animals
Spatial resolution
Detectors
Geometry
Biomedical engineering
Physics
Radiology
Biomedical imaging
Laboratories
Image reconstruction
- Language
- ISSN
- 1082-3654
Small animal imaging relies on cone-beam reconstruction geometries to achieve high spatial resolution for both microSPECT and microCT. However, normal circular-orbit cone-beam geometries offer a restricted field of view which for microSPECT has nonuniform sensitivity and spatial resolution. These limitations can be addressed by using a more complex detector orbit such a helix. In this paper, we present a small animal helical SPECT system which uses CZT detectors to acquire radionuclide data with excellent energy resolution and spatial resolution. It incorporates a gantry with integrated slip-ring for continuous detector rotation and an automated animal bed for translation. Both simulation studies and experimental data show this scanner improves the axial spatial resolution and lengthens the field of view in the axial direction.