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Maximum-Likelihood Joint Image Reconstruction/Motion Estimation in Attenuation-Corrected Respiratory Gated PET/CT Using a Single Attenuation Map

Alexandre Bousse, Ottavia Bertolli, David Atkinson, Simon Arridge, Sebastien Ourselin, Brian F. Hutton, Kris Thielemans
2016 IEEE Transactions on Medical Imaging  
This suggests a practical low-dose solution for implementation of motion-corrected respiratory gated PET/CT.  ...  This work provides an insight into positron emission tomography (PET) joint image reconstruction/motion estimation (JRM) by maximization of the likelihood, where the probabilistic model accounts for warped  ...  JOINT IMAGE RECONSTRUCTION/MOTION ESTIMATION ALGORITHM A.  ... 
doi:10.1109/tmi.2015.2464156 pmid:26259017 fatcat:s4msuzwl4naqdgdkkgkfp42q54

Evaluation of a direct motion estimation/correction method in respiratory-gated PET/MRI with motion-adjusted attenuation

Alexandre Bousse, Richard Manber, Beverley F. Holman, David Atkinson, Simon Arridge, Sébastien Ourselin, Brian F. Hutton, Kris Thielemans
2017 Medical Physics (Lancaster)  
In previous work, we developed a direct method for joint image reconstruction/motion estimation (JRM) for attenuation-corrected (AC) respiratory-gated PET, which uses a single attenuation-map (l-map).  ...  Purpose: Respiratory motion compensation in PET/CT and PET/MRI is essential as motion is a source of image degradation (motion blur, attenuation artifacts).  ...  The authors gratefully acknowledge Simon Wan, Institute of Nuclear Medicine (University College Hospital, London, UK), for identifying hot lesions in patient data and for clinical assessment.  ... 
doi:10.1002/mp.12253 pmid:28375560 fatcat:lzxa4ngk5vdwlpt2qf64cv3pzi

Attenuation correction in emission tomography using the emission data-A review

Yannick Berker, Yusheng Li
2016 Medical Physics (Lancaster)  
likelihood reconstruction of attenuation and activity (MLAA), the maximum likelihood attenuation correction factors (MLACF) algorithm, and their offspring.  ...  computed tomography (CT) in 2001; single photon emission computed tomography (SPECT) has seen a similar development.  ...  joint image reconstruction/motion estimation, ML-JRM); one then notes that only an arbitrarily warped µ-map is required to solve for λ and µ in all gates. 196 Using a similar algorithm (minimal MRI prior  ... 
doi:10.1118/1.4938264 pmid:26843243 pmcid:PMC4715007 fatcat:7oqbi5ttpvblbmmlzi7t5dgjqm

Recent advances in cardiac SPECT instrumentation and imaging methods

Jing Wu, Chi Liu
2019 Physics in Medicine and Biology  
(CFR), multi-radionuclide imaging, and improved image quality as a result of attenuation, scatter, motion, and partial volume corrections (PVCs).  ...  Cardiac SPECT continues to play a critical role in detecting and managing cardiovascular disease, in particularly coronary artery disease (CAD) (Jaarsma et al 2012 J. Am. Coll.  ...  We would like to thank PMB reviewers and Drs R Glenn Wells, Grant T Gullberg, Brian F Hutton and Michael A King for helpful feedbacks.  ... 
doi:10.1088/1361-6560/ab04de pmid:30726779 fatcat:dlanwzmuvfh47cix3s6opaxreq

Spatial Resolution Properties of Motion-Compensated Tomographic Image Reconstruction Methods

Se Young Chun, J. A. Fessler
2012 IEEE Transactions on Medical Imaging  
Many motion-compensated image reconstruction (MCIR) methods have been proposed to correct for subject motion in medical imaging.  ...  This effect may lead to quantification errors in small or narrow structures (such as small lesions or rings) of reconstructed images.  ...  This work was supported in part by NIH/NCI grant 1P01 CA87634.  ... 
doi:10.1109/tmi.2012.2192133 pmid:22481813 pmcid:PMC3389228 fatcat:6kzh5cophbdalll5gsav2pbcq4

Hybrid Imaging: Instrumentation and Data Processing

Jacobo Cal-Gonzalez, Ivo Rausch, Lalith K. Shiyam Sundar, Martin L. Lassen, Otto Muzik, Ewald Moser, Laszlo Papp, Thomas Beyer
2018 Frontiers in Physics  
This review covers milestones of the development of various hybrid imaging systems for use in clinical practice and small-animal research.  ...  and biological information, such as new types of image reconstruction and data correction schemes.  ...  Ladefoged for kindly providing us with the image data for Figure 6 and Jun Bao for providing us with the technical specifications of the uMI PET/CT systems.  ... 
doi:10.3389/fphy.2018.00047 fatcat:zd6zgyynnvgurozph22yadz7ga

Noise Properties of Motion-Compensated Tomographic Image Reconstruction Methods

Se Young Chun, Jeffrey A. Fessler
2013 IEEE Transactions on Medical Imaging  
We show the relationship among three MCIR methods-motion-compensated temporal regularization (MTR), the parametric motion model (PMM), and post-reconstruction motion correction (PMC)-for penalized weighted  ...  Motion-compensated image reconstruction (MCIR) methods incorporate motion models to improve image quality in the presence of motion.  ...  Acknowledgments This work was supported in part by NIH/NCI grant 1P01 CA87634.  ... 
doi:10.1109/tmi.2012.2206604 pmid:22759442 pmcid:PMC3821946 fatcat:64ix5olqyjdoxoqftmztm4wrva

Respiratory motion correction in 4D-PET by simultaneous motion estimation and image reconstruction (SMEIR)

Faraz Kalantari, Tianfang Li, Mingwu Jin, Jing Wang
2016 Physics in Medicine and Biology  
In this study, we investigated the use of simultaneous motion estimation and image reconstruction (SMEIR) methods for motion estimation/correction in 4D-PET.  ...  Errors were reduced to less than 10% in most images by using the SMEIR algorithm, showing its potential in motion estimation/correction in 4D-PET. 1999; Siddon, 1985) .  ...  ACKNOWLEDGMENTS We acknowledge funding support from the American Cancer Society (RSG-13-326-01-CCE), the US National Institutes of Health (R01 EB020366) and the Cancer Prevention and Research Institute  ... 
doi:10.1088/0031-9155/61/15/5639 pmid:27385378 pmcid:PMC4972500 fatcat:7alkpfs2ffb6fhpe2w32e7tjnq

Strategies for magnetic resonance imaging-guided attenuation correction in whole-body PET-MRI

Hossein Arabi, Habib Zaidi
In PET/CT imaging, the data provided by CT images can be utilized to generate an attenuation map at 511-keV for fulfilling the task of attenuation correction of PET data.  ...  As opposed to PET/CT imaging, where attenuation correction is relatively straightforward, attenuation correction in PET/MRI is a major challenge due to the lack of sufficient information provided by MR  ...  Acknowledgments Acknowledgements Undertaking this PhD has been a truly life-changing experience for me and it would not have been possible to do  ... 
doi:10.13097/archive-ouverte/unige:138384 fatcat:4hs5q55v5rggjffdkgwp22y7oa