Speaker
Description
Including inter-crystal scattering (ICS) events in Positron Emission Tomography (PET) can be beneficial in low-count scenarios such as small-animal imaging, where sensitivity is a limiting factor. To this end, conventional ICS-recovery techniques typically aim to identify the original line of response, usually with insufficient success rates. We have recently proposed a new physics-based analytical model for ICS events that obviates the aforementioned need. There, the additional information provided by the measured deposited energies in ICS events was not used. In this work, we investigate how this information can be integrated in the system matrix by using an energy-uncertainty model. Monte-Carlo-simulated data of the MERMAID small-animal PET was used to assess the effects on an image quality phantom. Ongoing results show that, while using the detected deposited energies might be beneficial to improve the spatial resolution when using ICS events, these benefits are constrained to the detector energy and spatial resolution.
| Track | PSMR |
|---|---|
| Presentation type | Oral |