PMID: 15250070Jul 15, 2004Paper

Exact reconstruction in 2D dynamic CT: compensation of time-dependent affine deformations

Physics in Medicine and Biology
Sébastien RouxPierre Grangeat

Abstract

This work is dedicated to the reduction of reconstruction artefacts due to motion occurring during the acquisition of computerized tomographic projections. This problem has to be solved when imaging moving organs such as the lungs or the heart. The proposed method belongs to the class of motion compensation algorithms, where the model of motion is included in the reconstruction formula. We address two fundamental questions. First what conditions on the deformation are required for the reconstruction of the object from projections acquired sequentially during the deformation, and second how do we reconstruct the object from those projections. Here we answer these questions in the particular case of 2D general time-dependent affine deformations, assuming the motion parameters are known. We treat the problem of admissibility conditions on the deformation in the parallel-beam and fan-beam cases. Then we propose exact reconstruction methods based on rebinning or sequential FBP formulae for each of these geometries and present reconstructed images obtained with the fan-beam algorithm on simulated data.

References

Feb 1, 1995·Physics in Medicine and Biology·J LiR E Coleman
Jul 23, 1996·Proceedings of the National Academy of Sciences of the United States of America·A RufG E Schulz
Mar 3, 1999·Twin Research : the Official Journal of the International Society for Twin Studies·D L DuffyN G Martin
May 28, 2002·Physics in Medicine and Biology·Weiguo Lu, Thomas R Mackie
Aug 13, 2002·Physics in Medicine and Biology·Frédéric NooHiroyuki Kudo
Sep 5, 2002·Physics in Medicine and Biology·Pierre GrangeatStéphane Bonnet
Jan 1, 1996·IEEE Transactions on Medical Imaging·C R CrawfordJ D Godwin
Jan 1, 1996·IEEE Transactions on Medical Imaging·C J RitchieY Kim

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Citations

Dec 10, 2009·Medical Physics·Colas SchretterMatthias Bertram
Dec 23, 2008·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Carsten Oliver SchirraMichael Grass
Feb 20, 2007·IEEE Transactions on Medical Imaging·Hengyong Yu, Ge Wang
Jun 14, 2006·IEEE Transactions on Medical Imaging·Hengyong YuGe Wang
Feb 13, 2009·IEEE Transactions on Medical Imaging·Simon RitLaurent Desbat
Oct 24, 2007·IEEE Transactions on Medical Imaging·Béatrice PerrenotFrançoise Peyrin
Feb 20, 2007·IEEE Transactions on Medical Imaging·Laurent DesbatPierre Grangeat
Jul 11, 2006·IEEE Transactions on Medical Imaging·Dirk SchäferMichael Grass
Jul 5, 2008·IEEE Transactions on Medical Imaging·Katsuyuki Taguchi, Hiroyuki Kudo
Jan 20, 2017·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Vincent Van NieuwenhoveJan Sijbers
Aug 12, 2018·Materials·Clément Jailin, Stéphane Roux
Sep 18, 2018·Physics in Medicine and Biology·Chun-Chien ShiehPaul J Keall
Jun 15, 2019·Nature Communications·Michal OdstrcilManuel Guizar-Sicairos
Feb 13, 2015·Physics in Medicine and Biology·J-H KimR Fulton

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