A prototype instrument for adaptive SPECT imaging

Melanie Freed; Matthew A. Kupinski; Lars R. Furenlid; Harrison H. Barrett

doi:10.1117/12.708818

28 March 2007 A prototype instrument for adaptive SPECT imaging

Melanie Freed, Matthew A. Kupinski, Lars R. Furenlid, Harrison H. Barrett

Author Affiliations +

Proceedings Volume 6510, Medical Imaging 2007: Physics of Medical Imaging; 65100V (2007) https://doi.org/10.1117/12.708818
Event: Medical Imaging, 2007, San Diego, CA, United States

Abstract

We have designed and constructed a small-animal adaptive SPECT imaging system as a prototype for quantifying the potential benefit of adaptive SPECT imaging over the traditional fixed geometry approach. The optical design of the system is based on filling the detector with the object for each viewing angle, maximizing the sensitivity, and optimizing the resolution in the projection images. Additional feedback rules for determining the optimal geometry of the system can be easily added to the existing control software. Preliminary data have been taken of a phantom with a small, hot, offset lesion in a flat background in both adaptive and fixed geometry modes. Comparison of the predicted system behavior with the actual system behavior is presented along with recommendations for system improvements.

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Melanie Freed, Matthew A. Kupinski, Lars R. Furenlid, and Harrison H. Barrett "A prototype instrument for adaptive SPECT imaging", Proc. SPIE 6510, Medical Imaging 2007: Physics of Medical Imaging, 65100V (28 March 2007); https://doi.org/10.1117/12.708818

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