Model-based Scatter Correction For Fully 3D PET
- 24 August 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 41 (1) , 1264-1268
- https://doi.org/10.1109/nssmic.1993.701845
Abstract
A method,is presented that directly calculates the mean,number,of scattered coincidences in data acquired with fully 3D positron emission tomography,(PET). This method uses a transmission scan, an emission scan, the physics of Compton scatter, and a mathematical model of the scanner in a forward calculation of the number,of events for which one photon has undergone,a single Compton,interaction. The distribution of events for which,multiple Compton,interactions have occurred is modelled,as a linear transformation of the single-scatter distribution. Computational efficiency is achieved by sampling,at rates no higher than those required by the scatter distribution and by implementing,the algorithm using look-up tables. Evaluation studies in phantoms,with large scatter fractions show that the method,yields images with quantitative accuracy equivalent to that of slice-collimated PET in clinically useful times.Keywords
This publication has 8 references indexed in Scilit:
- Model based scatter correction in three dimensions (positron emission tomography)Published by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- The problem of scatter correction in positron volume imagingIEEE Transactions on Medical Imaging, 1993
- Physical performance of a positron tomograph for brain imaging with retractable septaPhysics in Medicine & Biology, 1992
- Fully three-dimensional reconstruction for a PET camera with retractable septaIEEE Transactions on Medical Imaging, 1991
- A normalization technique for 3D PET dataPhysics in Medicine & Biology, 1991
- Object shape dependent scatter simulations for PETIEEE Transactions on Nuclear Science, 1991
- Quantitation in Positron Emission Computed TomographyJournal of Computer Assisted Tomography, 1986