Scatter estimation and motion correction in PET

This paper discusses how to estimate scatter when performing motion correction of PET data. It concentrates on head movement, but some results are valid for non-rigid motion as well. We show that rigid motion affects scattered events differently then unscattered events. This has consequences for the scatter estimation procedure. We show with simulations, phantom measurements and patient data that our proposed method obtains fully quantitative motion-corrected PET images.

[1]  Kris Thielemans,et al.  Correction of head movement on PET studies: comparison of methods. , 2006, Journal of nuclear medicine : official publication, Society of Nuclear Medicine.

[2]  D. Newport,et al.  A Single Scatter Simulation Technique for Scatter Correction in 3D PET , 1996 .

[3]  T. Spinks,et al.  Physical characteristics of the ECAT EXACT3D positron tomograph. , 2000, Physics in medicine and biology.

[4]  J. Ollinger.  Model-based scatter correction for fully 3D PET. , 1996, Physics in medicine and biology.

[5]  Claire Labbé,et al.  An object-oriented library incorporating efficient projection/backprojection operators for volume reconstruction in 3D PET , 1999 .

[6]  P B Hoffer,et al.  Computerized three-dimensional segmented human anatomy. , 1994, Medical physics.

[7]  Y. Picard,et al.  Motion correction of PET images using multiple acquisition frames , 1995, 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference Record.