6533b856fe1ef96bd12b2e80

RESEARCH PRODUCT

Inclusion of Inter Crystal Scatter data in PET

Magdalena RafecasJohn E. GillamJosep F. OliverP. Solevi

subject

Photonmedicine.diagnostic_testComputer scienceScatteringbusiness.industryImage qualityResolution (electron density)Iterative reconstructionPositron emission tomographymedicineComputer visionSensitivity (control systems)Artificial intelligencebusinessImage resolution

description

In PET, as the spatial resolution of the measurement system is increased, multiple interactions of a single photon may be separately measured and such events are often removed from the data used in image reconstruction. While for some PET imaging tasks this effect is unimportant, for primate, brain and high-spatial-resolution imaging where sensitivity is important, such Inter Crystal Scattering (ICS) events may constitute a large fraction of the measured data. On-the-fly list-mode image reconstruction is generally required in order to use all the information provided by ICS. Simulated One-Pass List-mode image reconstruction is used in this investigation to study the inclusion of ICS information into the reconstructed image using data acquired with the AX-PET prototype. In almost all cases an increase in image quality was observed, particularly for larger features. A small resolution penalty was also observed.

yearjournalcountryeditionlanguage
2012-05-012012 9th IEEE International Symposium on Biomedical Imaging (ISBI)
https://doi.org/10.1109/isbi.2012.6235484