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Motion-robust parameter estimation in abdominal diffusion-weighted MRI by simultaneous image registration and model estimation
2017
Medical Image Analysis
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Specifically, we estimated motioncompensated model parameters by simultaneously solving image registration and model estimation (SIR-ME) problems utilizing the interdependence of acquired volumes along ...
Graphical abstract Keywords Diffusion-weighted imaging; motion compensation; abdomen; intra voxel incoherent motion model Kurugol et al. ...
Simultaneous Image Registration and Model Estimation (SIR-ME) for Motion-Compensated DW-MRI We introduce a motion-compensated parameter estimation model that simultaneously solves image registration and ...
doi:10.1016/j.media.2017.04.006
pmid:28494271
pmcid:PMC5514879
fatcat:x6c54udtavaezdl3hb4b2bz2um
Motion Compensated Abdominal Diffusion Weighted MRI by Simultaneous Image Registration and Model Estimation (SIR-ME)
[chapter]
2015
Lecture Notes in Computer Science
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In this work, we introduce a motion-compensated parameter estimation framework that simultaneously solves image registration and model estimation (SIR-ME) problems by utilizing the interdependence of acquired ...
parameter estimates obtained by fitting the signal decay model to the acquired DW-MRI images. ...
Methods
Simultaneous Image Registration and Model Estimation (SIR-ME) for Motion Compensated DW-MRI Parameter Estimation In abdominal DW-MRI, we acquire images at multiple (i = 1‥N) b-values. ...
doi:10.1007/978-3-319-24574-4_60
pmid:26550612
pmcid:PMC4636124
fatcat:l7vet6owh5hhlga4zgzwhkedni
Front Matter: Volume 10133
2017
Medical Imaging 2017: Image Processing
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of non-rigid registration parameters for atlas-based segmentation of CT images
of human cochlea [10133-35]
10133 10
ACIR: automatic cochlea image registration [10133-36]
10133 11
Whole-body diffusion-weighted ...
in MR/CT using detectors trained
by articulated parameterized spine model [10133-45]
10133 1A
Subject-specific longitudinal shape analysis by coupling spatiotemporal shape modeling
with medial analysis ...
doi:10.1117/12.2270368
dblp:conf/miip/X17
fatcat:resfpzholvbtbalfkbg3pj64gu
Robust estimation of the apparent diffusion coefficient invariant to acquisition noise and physiological motion
2018
Magnetic Resonance Imaging
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Purpose: In this work we have proposed a methodology for the estimation of the apparent diffusion coefficient in the body from multiple breath hold diffusion weighted images, which is robust to two preeminent ...
Methods: We have extended a method for the joint groupwise multimodal registration and apparent diffusion coefficient estimation, previously proposed by the authors, in order to correct the bias that arises ...
Acknowledgments This work was partially supported by the European Regional Development ...
doi:10.1016/j.mri.2018.07.005
pmid:30036654
fatcat:dubexjh4ezhlxjalochgsutmdu
A Unified Approach to Diffusion Direction Sensitive Slice Registration and 3-D DTI Reconstruction From Moving Fetal Brain Anatomy
2014
IEEE Transactions on Medical Imaging
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Previous image registration techniques have been described to estimate the between slice fetal head motion, allowing the reconstruction of 3D a diffusion estimate on a regular grid using interpolation. ...
This also incorporates image resolution modeling to iteratively deconvolve the effects of the imaging point spread function using the multiple views provided by thick slices acquired in different anatomical ...
The noise therefore needs to be estimated simultaneously with the image and transformation parameters. ...
doi:10.1109/tmi.2013.2284014
pmid:24108711
pmcid:PMC4271809
fatcat:reaqfnwjibgtve2iue3ndxpuxu
GIFTed Demons: deformable image registration with local structure-preserving regularization using supervoxels for liver applications
2018
Journal of Medical Imaging
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Deformable image registration, a key component of motion correction in medical imaging, needs to be efficient and provides plausible spatial transformations that reliably approximate biological aspects ...
We illustrate the approach by applying it to estimate sliding motions at lung and liver interfaces on challenging four-dimensional computed tomography (CT) and dynamic contrast-enhanced magnetic resonance ...
Acknowledgments The authors acknowledge funding from the Cancer Research UK/Engineering and Physical Sciences Research Council Cancer Imaging Centre at Oxford. B.W.P. would like to thank D.F. ...
doi:10.1117/1.jmi.5.2.024001
pmid:29662918
pmcid:PMC5886381
fatcat:ulgejw2uknc5zjeidvh4qau7lq
Registration of Free-Breathing 3D+t Abdominal Perfusion CT Images via Co-segmentation
[chapter]
2013
Lecture Notes in Computer Science
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Dynamic contrast-enhanced computed tomography (DCE-CT) is a valuable imaging modality to assess tissues properties, particularly in tumours, by estimating pharmacokinetic parameters from the evolution ...
The proposed method is validated on 15 datasets acquired from patients with renal lesions and shows improvement in terms of registration and estimation of pharmacokinetic parameters over the state-of-the-art ...
The major challenge in parameter estimation is therefore to design a robust registration method, that cannot use temporal consistency because of the low framerate. ...
doi:10.1007/978-3-642-40763-5_13
fatcat:v6b65lddjbcrhic3pekzk46mdi
2007 Index IEEE Transactions on Medical Imaging Vol. 26
2007
IEEE Transactions on Medical Imaging
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., +, TMI Jan. 2007 68-76
Estimating 3-D Respiratory Motion From Orbiting Views by Tomographic
Image Registration. ...
., +, TMI Feb. 2007 249-260
Estimating 3-D Respiratory Motion From Orbiting Views by Tomographic
Image Registration. ...
doi:10.1109/tmi.2007.912905
fatcat:4kodjew23ffjvebqt5fopjo5oa
Optimal acquisition scheme for flow‐compensated intravoxel incoherent motion diffusion‐weighted imaging in the abdomen: An accurate and precise clinically feasible protocol
2019
Magnetic Resonance in Medicine
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Flow-compensated (FC) diffusion-weighted MRI (DWI) for intravoxel-incoherent motion (IVIM) modeling allows for a more detailed description of tissue microvasculature than conventional IVIM. ...
Therefore, we developed an optimized abdominal FC-IVIM acquisition with a clinically feasible scan time. ...
the intravoxel incoherent motion (IVIM) model fit to diffusion-weighted MRI (DWI) data is a promising example without contrast injection. ...
doi:10.1002/mrm.27990
pmid:31566262
pmcid:PMC6899942
fatcat:ss3lrj3lafdhpjqtcxtazitksy
Separating fetal and maternal placenta circulations using multiparametric MRI
2018
Magnetic Resonance in Medicine
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In this work, we propose a new multiparametric model for placental tissue signal in MRI. ...
fitted to overlapping multiecho T2 relaxometry and diffusion MRI with low b-values. ...
ACKNOWLEDGMENT We thank all the families who agreed to take part in this research.
ORCID
David Owen http://orcid.org/0000-0002-5381-7722 David Atkinson http://orcid.org/0000-0003-1124-6666 ...
doi:10.1002/mrm.27406
pmid:30239036
fatcat:2culbfa4xfg6ddjp2whon4obha
Technical advancements and protocol optimization of diffusion-weighted imaging (DWI) in liver
2016
Abdominal Radiology
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An area of rapid advancement in abdominal MRI is diffusion-weighted imaging (DWI). ...
More advanced DWI techniques, including Intra-Voxel Incoherent Motion (IVIM) diffusion imaging, anomalous diffusion imaging, and Diffusion Kurtosis Imaging (DKI) are discussed. ...
Page 4 Diffusion-weighted Echo-planar Imaging (EPI) In order to make MRI signal sensitive to the diffusive motion of water molecules, a diffusion encoding module can be added to a MRI pulse sequence. ...
doi:10.1007/s00261-015-0602-x
pmid:26830624
fatcat:eusrd4ae6jhz5p6vr4mdw2pfg4
DCE-MRI, DW-MRI, and MRS in Cancer
2016
Topics in Magnetic Resonance Imaging (TMRI)
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Multi-parametric magnetic resonance imaging (mpMRI) offers a unique insight into tumor biology by combining functional MRI techniques that inform on cellularity (diffusion-weighted MRI), vascular properties ...
Challenges in the application of mpMRI in the clinic include the technical considerations in acquiring good quality functional MRI data, development of robust techniques for analysis, and clinical interpretation ...
Centre and the Clinical Research Facility in Imaging. ...
doi:10.1097/rmr.0000000000000103
pmid:27748710
pmcid:PMC5081190
fatcat:7f64gjelhrgrvlv4obgwb2mnc4
Evaluation of semiautomated quantification of cranial ultrasound images in newborns as a predictor of Neonatal Behavioral Assessment Scale
2011
2011 IEEE International Symposium on Biomedical Imaging: From Nano to Macro
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WITH ............................931 EXISTING DIFFUSION WEIGHTED MRI METHODS Alpay Özcan, Washington University in Saint Louis, United States TH-OS4.4: EXACT INTEGRATION OF DIFFUSION ORIENTATION DISTRIBUTION ...
Calhoun, The Mind Research Network and The University of New Mexico, United States; Tulay Adali, University of Maryland, Baltimore County, United States
TH-PS1b.1: ROBUST REAL TIME MOTION ESTIMATION ...
doi:10.1109/isbi.2011.5872350
dblp:conf/isbi/Bonet-CarneTFGA11
fatcat:hz26tx4dmzbbnefruo7eh5jrbm
MRI Measurement of Placental Perfusion and Fetal Blood Oxygen Saturation in Normal Pregnancy and Placental Insufficiency
[chapter]
2018
Lecture Notes in Computer Science
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The fetal blood saturation is a relative unknown, thus we describe a method to simultaneously estimate the fetal blood volume in addition to the fetal blood T2 relaxation time from which we can estimate ...
We report differences in vascular compartments and saturation values observed between 5 normal pregnancies, and two complicated by placental insufficiency. ...
Acknowledgements We would like to acknowledge the Wellcome Trust (210182/Z/18/Z, 101957/Z/13/Z), the National Institute for Health Research (NIHR), the EP-SRC (NS/A000027/1) and the Radiological Research ...
doi:10.1007/978-3-030-00934-2_101
fatcat:nmgfbt2kwzgf7o4vfojvf4b4ty
Capturing intraoperative deformations: research experience at Brigham and Women's hospital
2005
Medical Image Analysis
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We have developed algorithms to model the motion of key anatomical structures and system implementations that enable us to estimate the deformation of the critical anatomy from sequences of volumetric ...
This paper reviews the experience at Brigham and WomenÕs Hospital through the process of developing and applying novel algorithms for capturing intraoperative deformations in support of image guided therapy ...
Acknowledgements This investigation was supported in part by NIH Grants R21 MH67054, R01 LM007861, P41 RR13218, P01 CA67165, R01 AG19513 and R33 CA99015 and by a research grant from CIMIT. ...
doi:10.1016/j.media.2004.11.005
pmid:15721230
fatcat:mahu4a6za5gz5lpg3sr2crzkfq
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