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Parallel imaging: is GRAPPA a useful acquisition tool for MR imaging intended for volumetric brain analysis?

Terri L Lindholm, Lisa Botes, Eva-Lena Engman, Anders Frank, Tomas Jonsson, Leif Svensson, Per Julin
2009 BMC Medical Imaging  
The principle question is, "Can parallel imaging be used to acquire images at 1.5 T of sufficient quality to allow volumetric analysis of patient brains?"  ...  GRAPPA parallel imaging technique applied to the MPRAGE sequence.  ...  Yvonne Freund-Levi and Professor Lars-Olof Wahlund, in particular for the recruitment of the elderly patient group.  ... 
doi:10.1186/1471-2342-9-15 pmid:19650898 pmcid:PMC2734748 fatcat:z42ebuxnq5bfralczjwgv45hoa

Parallel magnetic resonance imaging

David J Larkman, Rita G Nunes
2007 Physics in Medicine and Biology  
Well-established applications including angiography, cardiac imaging and applications using echo planar imaging are reviewed and we discuss what makes a good application for parallel imaging.  ...  A brief summary of spatial encoding in MRI is followed by an introduction to the problem parallel imaging is designed to solve.  ...  Generalized auto calibrating partially parallel acquisition (GRAPPA).  ... 
doi:10.1088/0031-9155/52/7/r01 pmid:17374908 fatcat:5akpijhwgfdovkfe4wykbj6lqa

Comprehensive quantification of signal-to-noise ratio andg-factor for image-based andk-space-based parallel imaging reconstructions

Philip M. Robson, Aaron K. Grant, Ananth J. Madhuranthakam, Riccardo Lattanzi, Daniel K. Sodickson, Charles A. McKenzie
2008 Magnetic Resonance in Medicine  
A simple Monte Carlo based method is proposed for all linear image reconstruction algorithms, which allows measurement of signal-to-noise ratio and g-factor and is demonstrated for SENSE and GRAPPA reconstructions  ...  This method is universally applicable to the parallel imaging reconstruction techniques used in clinical applications and will allow pixel-by-pixel image noise measurements for all parallel imaging strategies  ...  Peter Kellman for helpful discussions. C.A. McKenzie holds the Canada Research Chair in Parallel Magnetic Resonance Imaging at the University of Western Ontario.  ... 
doi:10.1002/mrm.21728 pmid:18816810 pmcid:PMC2838249 fatcat:symaqw3cevhy3ipjownss7aomi

Effect of MRI acquisition acceleration via compressed sensing and parallel imaging on brain volumetry

Michael Dieckmeyer, Abhijit Guha Roy, Jyotirmay Senapati, Christian Wachinger, Lioba Grundl, Jörg Döpfert, Pere Ferrera Bertran, Andreas Lemke, Claus Zimmer, Jan S Kirschke, Dennis M Hedderich
2021 Magnetic Resonance Materials in Physics, Biology and Medicine  
Noise-to-contrast ratio as a measure of image quality was calculated for each dataset to analyze the association between acceleration factor, noise and volumetric brain measurements.  ...  Brain segmentation and volumetry was performed using two different software tools: md.brain, a proprietary software based on voxel-based morphometry, and FreeSurfer, an open-source software based on surface-based  ...  The present study is among the first to link a systematic volumetric bias of brain tissue with state of the art MR image acceleration techniques.  ... 
doi:10.1007/s10334-020-00906-9 pmid:33502667 fatcat:hf3llkzaybh2fbcope4ubcgxty

Simultaneous multi-slice inverse imaging of the human brain

Yi-Cheng Hsu, Ying-Hua Chu, Shang-Yueh Tsai, Wen-Jui Kuo, Chun-Yuan Chang, Fa-Hsuan Lin
2017 Scientific Reports  
These include, for example, MR-encephalography (MREG) 13 and inverse imaging (InI) 14, 15 .  ...  Together, these results indicate that SMS-InI is a useful tool in measuring cortical and subcortical hemodynamic responses with high spatiotemporal resolution.  ...  The reconstructed volumetric images of the reference scan using this sampling pattern had the same 1/3 FOV shift as SMS-InI. fMRI experiment paradigm and data analysis.  ... 
doi:10.1038/s41598-017-16976-0 pmid:29208906 pmcid:PMC5717110 fatcat:frvuc4pb2ba7lfvggiavrary3u

A Hybrid, Dual Domain, Cascade of Convolutional Neural Networks for Magnetic Resonance Image Reconstruction

Roberto Souza, R. Marc Lebel, Richard Frayne
2019 International Conference on Medical Imaging with Deep Learning  
is trained end-to-end for compressed sensing reconstruction of MR images.  ...  Deep-learning-based magnetic resonance (MR) imaging reconstruction techniques have the potential to accelerate MR image acquisition by reconstructing in real-time clinical quality images from k-spaces  ...  Chen Fong Fellowship in Medical Imaging from the University of Calgary. R.F. holds the Hopewell Professorship of Brain Imaging at the University of Calgary.  ... 
dblp:conf/midl/SouzaLF19 fatcat:sgddvb3dkbdaxk457b42y3ebly

Diffusion tensor and volumetric magnetic resonance imaging using an MR-compatible hand-induced robotic device suggests training-induced neuroplasticity in patients with chronic stroke

ASIMINA LAZARIDOU, LOUKAS ASTRAKAS, DIONYSSIOS MINTZOPOULOS, AZADEH KHANICHEH, ANEESH B. SINGHAL, MICHAEL A. MOSKOWITZ, BRUCE ROSEN, ARIA A. TZIKA
2013 International Journal of Molecular Medicine  
We employed a combination of diffusion tensor imaging (DTI) and volumetric MRI using a 3-tesla (3T) MRI system using a 12-channel Siemens Tim coil and a novel MR-compatible hand-induced robotic device.  ...  In this study, we hypothesized that brain mapping using a novel magnetic resonance (MR)-compatible hand device in conjunction with state-of-the-art magnetic resonance imaging (MRI) can serve as a novel  ...  Acknowledgements This study was supported in part by a grant from the National Institute of Biomedical Imaging and Bioengineering of the National Institutes of Health (Grant no.  ... 
doi:10.3892/ijmm.2013.1476 pmid:23982596 pmcid:PMC3820572 fatcat:djgmuabbz5ejjdkwm6co3ndiqe

Automatic cortical surface reconstruction of high-resolution T 1 echo planar imaging data

Ville Renvall, Thomas Witzel, Lawrence L. Wald, Jonathan R. Polimeni
2016 NeuroImage  
Echo planar imaging (EPI) is the method of choice for the majority of functional magnetic resonance imaging (fMRI), yet EPI is prone to geometric distortions and thus misaligns with conventional anatomical  ...  Here we present a framework for deriving cortical surface reconstructions directly from high-resolution EPI-based reference images that provide anatomical models exactly geometric distortion-matched to  ...  Support for this research was provided in part by the NIH National Institute for Biomedical Imaging and Bioengineering (P41-EB015896, K01-EB011498, and R01-EB019437), Finnish Cultural Foundation Kalle  ... 
doi:10.1016/j.neuroimage.2016.04.004 pmid:27079529 pmcid:PMC5234090 fatcat:m6xd66gnp5hmxh6h2gihc5p6de

Multicenter dataset of multi-shell diffusion MRI in healthy traveling adults with identical settings

Qiqi Tong, Hongjian He, Ting Gong, Chen Li, Peipeng Liang, Tianyi Qian, Yi Sun, Qiuping Ding, Kuncheng Li, Jianhui Zhong
2020 Scientific Data  
acquisition tends to confound reliable individual-based analysis of diffusion measures.  ...  Multicenter diffusion magnetic resonance imaging (MRI) has drawn great attention recently due to the expanding need for large-scale brain imaging studies, whereas the variability in MRI scanners and data  ...  Hz/Px, generalized auto-calibrating partial parallel acquisition (GRAPPA) factor = 3, and the acquisition time was 8 minutes and 22 seconds.  ... 
doi:10.1038/s41597-020-0493-8 pmid:32461581 fatcat:ckynqybtmvfhrmdh3le5nshai4

Variability in Subthalamic Nucleus Targeting for Deep Brain Stimulation with 3 and 7 Tesla Magnetic Resonance Imaging

Bethany R. Isaacs, Margot Heijmans, Mark L. Kuijf, Pieter L. Kubben, Linda Ackermans, Yasin Temel, Max C. Keuken, Birte U. Forstmann
2021 NeuroImage: Clinical  
Side-effects may, however, be induced when the DBS lead is placed suboptimally. Currently, lower field magnetic resonance imaging (MRI) at 1.5 or 3 Tesla (T) is used for targeting.  ...  Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is an effective surgical treatment for Parkinson's disease (PD).  ...  Acknowledgement We would like to acknowledge Pierre-Louis Bazin for helpful discussions.  ... 
doi:10.1016/j.nicl.2021.102829 pmid:34560531 pmcid:PMC8463907 fatcat:xk4s4nu75vbsbmtpmvfg65szmy

Homemade array of surface coils implementation for small animal magnetic resonance imaging

Fernando Yepes-Calderon, Olivier Beuf
2017 Advances in Science, Technology and Engineering Systems  
Accurate Imaging is in high demand when modeling abnormalities and, magnetic resonance imaging plays a vital role due to its demonstrated lowest intrusion when compared with other imaging methods.  ...  for the studied subjects.  ...  In contrast, parallel acquisitions improve image quality while avoiding all of these issues [2] .  ... 
doi:10.25046/aj020368 fatcat:zfnk56zbmbaf7ldjnyu2cuerli

Baseline correction of phase-contrast images in congenital Cardiac Magnetic Resonance Imaging

Brian J Holland, Beth F Printz, Wyman W Lai
2009 Journal of Cardiovascular Magnetic Resonance  
Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification  ...  MRI images were analysed using dedicated software (MASS © , Medis,  ...  Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional  ... 
doi:10.1186/1532-429x-11-s1-p135 fatcat:2lr2w26mgbh3lhfl5teh6d4qwu

Novel technique of strain assessment utilizing feature tracking in nontagged SSFP images: validation with tagged strain analysis

Kan N Hor, Erin Wash, Robert J Fleck, Janaka P Wansapura, James F Cnota, D Woodrow Benson, William M Gottliebson, Wojciech Mazur
2009 Journal of Cardiovascular Magnetic Resonance  
Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification  ...  MRI images were analysed using dedicated software (MASS © , Medis,  ...  Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional  ... 
doi:10.1186/1532-429x-11-s1-p33 fatcat:3dwd3jbybrfy5cgcgqybfry5g4

Image-Guided Transcranial Focused Ultrasound Stimulates Human Primary Somatosensory Cortex

Wonhye Lee, Hyungmin Kim, Yujin Jung, In-Uk Song, Yong An Chung, Seung-Schik Yoo
2015 Scientific Reports  
The transient and localized stimulation of the brain using image-guided transcranial FUS may serve as a novel tool for the non-invasive assessment and modification of region-specific brain function.  ...  D evelopment of novel brain stimulation modalities would offer new opportunities in the creation of functional mapping probes for basic neuroscientific research as well as tools for non-pharmacological  ...  used for clinical imagers).  ... 
doi:10.1038/srep08743 pmid:25735418 pmcid:PMC4348665 fatcat:btebjocrhrhsbl4qoeew7pdvdu

Imaging the vessel wall in major peripheral arteries using susceptibility weighted imaging: visualizing calcifications

Qi Yang, Kuncheng Li, Jiangtao Liu, S Barnes, Z Wu, J Neelavalli, J Hu, EM Haacke
2009 Journal of Cardiovascular Magnetic Resonance  
Contrast enhanced cardiovascular magnetic resonance imaging (ceCMR) can detect and quantify myocardial fibrosis in the setting of CMI and might therefore be a valuable tool for a more accurate risk stratification  ...  MRI images were analysed using dedicated software (MASS © , Medis,  ...  Conclusion: We presented a robust, accurate and efficient method for the fully automatic delineation of the myocardium contours in LA + SA cine CMR images, which can be used for accurate LV functional  ... 
doi:10.1186/1532-429x-11-s1-o12 fatcat:bn73jivmuzdrveepjzhl4hikl4
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