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Maximum-Likelihood Joint Image Reconstruction/Motion Estimation in Attenuation-Corrected Respiratory Gated PET/CT Using a Single Attenuation Map
2016
IEEE Transactions on Medical Imaging
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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
2017
Medical Physics (Lancaster)
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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
2016
Medical Physics (Lancaster)
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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
2019
Physics in Medicine and Biology
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(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
2012
IEEE Transactions on Medical Imaging
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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
2018
Frontiers in Physics
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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
2013
IEEE Transactions on Medical Imaging
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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)
2016
Physics in Medicine and Biology
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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
2016
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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