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Robust diffusion imaging framework for clinical studies
[article]
2015
arXiv
pre-print
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However, multiple artefacts abound in in vivo measurements; from either subject such as cardiac pulsation, bulk head motion, respiratory motion and involuntary tics and tremor, or imaging hardware related ...
These artefacts can severely degrade the resulting images and render diffusion analysis difficult or impossible. ...
(Zwiers, 2010) and kindly shared his PATCH code with us and Dr. Pavel Cizek who shared with us his publications. Authors thank Dr. Tony Stoecker for valuable discussions and Dr. ...
arXiv:1502.04967v1
fatcat:4ftaxqxp55g4pp2ridvgtgk4iq
Denoising human cardiac diffusion tensor magnetic resonance images using sparse representation combined with segmentation
2009
Physics in Medicine and Biology
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Cardiac diffusion tensor magnetic resonance imaging (DT-MRI) is noise sensitive, and the noise can induce numerous systematic errors in subsequent parameter calculations. ...
image contrast and fine structures. ...
The authors thank Stanislas Rapacchi for his help in acquiring the data, and many other researchers in CREATIS-LRMN for their helpful discussions and comments in this investigation. ...
doi:10.1088/0031-9155/54/6/004
pmid:19218737
fatcat:anry4od7bfg4nomdkxwqazt3hm
Specifics of cardiac magnetic resonance imaging in children
2016
Archives of Cardiovascular Diseases
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resolution; the higher and more variable heart rate limits tissue characterization and temporal resolution; and motion artefacts (notably respiratory motions) must be dealt with. ...
This review points out three specific features of cardiac magnetic resonance imaging (MRI) in children: the small size of the heart modifies the usual balance between signal-to-noise ratio and spatial ...
Motion artefacts Children's respiratory motion and small duration of middiastole diastasis cause important blurring and motion artefacts that impair the reliability of tissue characterization sequences ...
doi:10.1016/j.acvd.2015.11.004
pmid:26778085
fatcat:wunr5smebrewvliglnojoddzq4
Longitudinal relation between structural network efficiency, cognition, and gait in cerebral small vessel disease
2021
The journals of gerontology. Series A, Biological sciences and medical sciences
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We reconstructed the white matter network for each subject based on diffusion tensor imaging tractography, followed by graph-theoretical analyses to compute the global efficiency. ...
Background To investigate changes in gait performance over time and how these changes are associated with the decline in structural network efficiency and cognition in older patients with cerebral small ...
We corrected for cardiac and head motion as well as eddy currents by using the PATCH (Patching ArTefacts from Cardiac and Head motion) algorithm as reported previously (26) . ...
doi:10.1093/gerona/glab247
pmid:34459914
pmcid:PMC8893255
fatcat:hhrrxvs4yvcobe6hntqdmwcx6i
Automatic Multi-Class Cardiovascular Magnetic Resonance Image Quality Assessment using Unsupervised Domain Adaptation in Spatial and Frequency Domains
[article]
2021
arXiv
pre-print
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We identify four common CMR imaging artefacts, including respiratory motion, cardiac motion, Gibbs ringing, and aliasing. ...
The model can deal with images acquired in different views, including two, three, and four-chamber long-axis and short-axis cine CMR images. ...
The accuracy for detecting motion artefacts in the head area is 97% and in the abdomen area is 75%. ...
arXiv:2112.06806v1
fatcat:xzwdibekvfgsnhy2j6l3ct4whe
Remote Monitoring of Vital Signs in Diverse Non-Clinical and Clinical Scenarios Using Computer Vision Systems: A Review
2019
Applied Sciences
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From this review it emerges that automatic multiple regions of interest (ROIs) selection, removal of noise artefacts caused by both illumination variations and motion artefacts, simultaneous multiple person ...
In addition, video techniques allow measurements from multiple individuals opportunistically and simultaneously in groups. ...
The motion in the regions of the head, arterial pulse, and thoracic and abdominal region are included in this method. ...
doi:10.3390/app9204474
fatcat:nmktufnimzbszavjkxv7rt5dhe
A Decoupled Uncertainty Model for MRI Segmentation Quality Estimation
[article]
2021
arXiv
pre-print
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By augmenting training images with k-space artefacts, we propose a novel CNN architecture to decouple sources of uncertainty related to the task and different k-space artefacts in a self-supervised manner ...
and quantitatively in the form of error bars on volume measurements. ...
ADNI is funded by the National Institute on Aging, the National Institute of Biomedical Imaging and Bioengineering, and through generous contributions from the following:
Ethical Standards The work ...
arXiv:2109.02413v1
fatcat:24dhe4dqrrgdnnwkiv3cbweva4
Appropriate use criteria for cardiovascular magnetic resonance imaging (CMR): SIC-SIRM position paper part 1 (ischemic and congenital heart diseases, cardio-oncology, cardiac masses and heart transplant)
2021
Radiologia Medica
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The writing committee consisted of members and experts of both societies who worked jointly to develop a more integrated approach in the field of cardiac radiology. ...
Part 1 of the document will cover ischemic heart disease, congenital heart disease, cardio-oncology, cardiac masses and heart transplant. ...
There is inhomogeneous contrast enhancement in post-contrast T1-weighted and LGE images (b-c) as compared to pre-contrast T1-weighted short axis image (***). ...
doi:10.1007/s11547-020-01332-6
pmid:33629237
fatcat:jd3pwp6qkrg3vn3ibs7coh55ji
FaBiAN: A Fetal Brain magnetic resonance Acquisition Numerical phantom
[article]
2021
arXiv
pre-print
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We demonstrate its value to evaluate the robustness and optimize the accuracy of an algorithm for super-resolution fetal brain magnetic resonance imaging from simulated motion-corrupted 2D low-resolution ...
Accurate characterization of in utero human brain maturation is critical as it involves complex and interconnected structural and functional processes that may influence health later in life. ...
We would also like to thank Ji Hui from the Center for MR Research of University Children's Hospital Zurich (Zurich, Switzerland) for the annotation of the SR fetal brain MR images in subjects scanned ...
arXiv:2109.03624v1
fatcat:rwaqc7vkyfcgte4xqirotjhrjq
Associations between ADHD symptom remission and white matter microstructure: a longitudinal analysis
[article]
2020
bioRxiv
pre-print
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Method: We obtained diffusion-weighted imaging (DWI) data from 99 participants at two time points (mean age baseline: 16.91 years, mean age follow-up: 20.57 years). ...
Our findings indicate divergent WM developmental trajectories between individuals with persistent and remittent ADHD, and support the role of prefrontal and sensorimotor tracts in the remission of ADHD ...
NeuroImage Patching cardiac and head motion artefacts in diffusion-537 weighted images. NeuroImage, 53(2), 565-575. Elsevier Inc. ...
doi:10.1101/2020.09.24.311654
fatcat:ajmsfnroy5f5lmtgmxhlf7ygmu
High-dimensionality undersampled patch-based reconstruction (HD-PROST) for accelerated multi-contrast MRI
2019
Magnetic Resonance in Medicine
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To develop a new high-dimensionality undersampled patch-based reconstruction (HD-PROST) for highly accelerated 2D and 3D multi-contrast MRI. ...
. 28, 29 Although those techniques have shown promise for motion-resolved quantitative cardiac imaging by efficiently solving a global low-rank tensor decomposition, they do not exploit the strong non-local ...
This finding may be partly explained by the fact that B 1 imperfection, 52 magnetization transfer, 53 and diffusion-weighting 54 were not considered in this MRF study and could lead to inaccurate T ...
doi:10.1002/mrm.27694
pmid:30834594
pmcid:PMC6646908
fatcat:dknap4ijdrfzdilzdwiu7qrjp4
Layer-specific diffusion weighted imaging in human primary visual cortex in vitro
2013
Cortex
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In the present paper we show for the first time the layered structure of the human neocortex with ex vivo diffusion weighted imaging (DWI). ...
Abbreviations V1 = primary visual cortex, BA = Brodmann area, MRI = magnetic resonance imaging, DWI = diffusion weighted imaging, MR = magnetic resonance, MGE = multi-echo gradient echo, FA = fractional ...
The authors express their gratitude to Andor Veltien, David Norris and Dirk Ruiter for their advisory support in this project. ...
doi:10.1016/j.cortex.2012.11.015
pmid:23347559
fatcat:mezohrbxwzg7pley26dusx6g44
Resting-state fMRI in the Human Connectome Project
2013
NeuroImage
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Resting-state functional magnetic resonance imaging (rfMRI) allows one to study functional connectivity in the brain by acquiring fMRI data while subjects lie inactive in the MRI scanner, and taking advantage ...
echo-planar imaging. ...
FMRIB multiband motion piloting; to Erin Reid and Donna Dierker (WashU), for helping with the FIX training (hand-labelling of ICA components); and to David Flitney (Oxford), for creating the Melview ICA ...
doi:10.1016/j.neuroimage.2013.05.039
pmid:23702415
pmcid:PMC3720828
fatcat:fg67nqy3t5allcrpz2fgtqayym
2019 Index IEEE Transactions on Biomedical Engineering Vol. 66
2019
IEEE Transactions on Biomedical Engineering
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., +, TBME Aug. 2019 2140-2151 Auto-Regressive Discrete Acquisition Points Transformation for Diffusion Weighted MRI Data. ...
Zhang, D., +, TBME Feb. 2019 411-420 Auto-Regressive Discrete Acquisition Points Transformation for Diffusion Weighted MRI Data. ...
doi:10.1109/tbme.2020.2964087
fatcat:mdfzsmdahnao5ccnuj232hycsm
Functional connectomics from resting-state fMRI
2013
Trends in Cognitive Sciences
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After describing MRI acquisition and image-processing methods commonly used to generate data in a form amenable to connectomics network analysis, we discuss different approaches for estimating network ...
Presumably, the brain is continuously engaged in undirected cognitive activities (both conscious thought processes and subconscious activity such as learning/unlearning) and also responds to uncontrolled ...
They thank their many colleagues within the WU-Minn HCP Consortium for their invaluable contributions in generating the publicly available HCP data and in implementing the many procedures needed to acquire ...
doi:10.1016/j.tics.2013.09.016
pmid:24238796
pmcid:PMC4004765
fatcat:lgv3qwqmafeibkqgraqjlvrnzq
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