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Prospective multiaxial motion correction for fMRI

Heidi A. Ward, Stephen J. Riederer, Roger C. Grimm, Richard L. Ehman, Joel P. Felmlee, Clifford R. Jack
2000 Magnetic Resonance in Medicine  
Corruption of the image time series due to interimage head motion limits the clinical utility of functional MRI.  ...  In vivo images demonstrate correction of simultaneous through-plane and in-plane motion and improved detection of fMRI activation in the presence of head motion. Magn Reson Med 43:459 -469, 2000.  ...  ACKNOWLEDGMENTS The authors thank Jillyn Freeman, Thomas Hulshizer, and Phillip Rossman.  ... 
doi:10.1002/(sici)1522-2594(200003)43:3<459::aid-mrm19>;2-1 pmid:10725890 fatcat:am27pnqg2bf5np7to3kvkktnda

Multislice motion modeling for MRI-guided radiotherapy gating

John S. Ginn, Dan Ruan, Daniel A. Low, James M. Lamb
2019 Medical Physics (Lancaster)  
The multislice motion model was evaluated in a single slice with each newly acquired image using a leave-one-out approach.  ...  This model utilizes an external respiratory bellows signal recorded during imaging to simultaneously estimate motion across all imaged slices.  ...  Acknowledgements: This work was supported in part by a National Institutes of Health grant (2T32EB2101-41).  ... 
doi:10.1002/mp.13350 pmid:30570755 pmcid:PMC6370044 fatcat:q4a6fkal2bccnpcb3cowfbotz4

How Useful is an Integrated SPECT/CT in Clinical Setting and Research?: Evaluation of a Low Radiation Dose 4 Slice System§

Tarik Belhocine, Irina Rachinsky, Cigdem Akincioglu, Sanjay Gambhir, Brad Wilcox, William Vezina, Larry Stitt, Albert Driedger, Jean-Luc Urbain
2008 Open Medical Imaging Journal  
and reconstruction parameters, 4) to evaluate image registration package and 5) to evaluate the product usability and quality.  ...  The Open Medical Imaging Journal, 2008, Volume 2 81 and improved CT image quality relative to the previous single slice CT, 2) to evaluate existing and new hybrid protocols workflow, 3) to refine CT acquisition  ...  Many thanks also go to the Nuclear Medicine technical staff from South Street Hospital for its valuable contribution to the implementation of the Infinia™ Hawkeye™ 4, especially Bob Vanderwerf and Suzanne  ... 
doi:10.2174/1874347100802010080 fatcat:igc6jfgh75hm7lttpdxvx5utj4

Are Movement Artifacts in Magnetic Resonance Imaging a Real Problem?—A Narrative Review

Inger Havsteen, Anders Ohlhues, Kristoffer H. Madsen, Janus Damm Nybing, Hanne Christensen, Anders Christensen
2017 Frontiers in Neurology  
Movement artifacts compromise image quality and may interfere with interpretation, especially in magnetic resonance imaging (MRI) applications with low signal-to-noise ratio such as functional MRI or diffusion  ...  Movement tracking during imaging may allow for prospective correction or postprocessing steps separating signal and noise.  ...  The solution is image acquisition with simultaneous prospective motion correction (57-60).  ... 
doi:10.3389/fneur.2017.00232 pmid:28611728 pmcid:PMC5447676 fatcat:bnpwvejk6ney3e54mbpwexfdnq

High temporal resolution motion estimation using a self-navigated simultaneous multi-slice echo planar imaging acquisition

Jose R. Teruel, Joshua M. Kuperman, Anders M. Dale, Nathan S. White
2018 Journal of Magnetic Resonance Imaging  
To present a feasibility study for applying the extended Kalman filter (EKF) framework for high temporal resolution motion correction of resting state functional MRI (rs-fMRI) series using each simultaneous  ...  Motion estimates were computed using two techniques: a conventional rigid-body volume-wise registration; and a high-temporal resolution motion estimation rigid-body approach.  ...  Purpose: To present a feasibility study for applying the extended Kalman filter (EKF) framework for high temporal resolution motion correction of resting state functional MRI (rs-fMRI) series using each  ... 
doi:10.1002/jmri.25953 pmid:29437252 pmcid:PMC6153080 fatcat:7aoyq5fsvrdhpd3xcs6lhwyxni

PET/MRI: Technical Challenges and Recent Advances

Jin Ho Jung, Yong Choi, Ki Chun Im
2016 Nuclear medicine and molecular imaging  
level, has become a powerful imaging modality to understand the molecular biology details, disease mechanisms, and pharmacokinetics in animals and humans.  ...  This paper presents the technical challenges and recent advances in combining PET and MRI along with several approaches for improving PET image quality of the PET/MRI hybrid imaging system.  ...  In simultaneous PET/MRI data, PET motion correction can be performed using a motion model from respiratory-gated MR volumes.  ... 
doi:10.1007/s13139-016-0393-1 pmid:26941854 pmcid:PMC4762872 fatcat:uj4b2vssovf5pl4saugavecaba

Real-time measurement and correction of both B0 changes and subject motion in diffusion tensor imaging using a double volumetric navigated (DvNav) sequence

A. Alhamud, Paul A. Taylor, Andre J.W. van der Kouwe, Ernesta M. Meintjes
2016 NeuroImage  
methods for correcting ΔB0 effects in EPI Several techniques have been proposed to correct ΔB0 effects in EPI, including the use of specific hardware and both prospective and retrospective methods.  ...  Diffusion tensor imaging (DTI) requires a set of diffusion weighted measurements in order to acquire enough information to characterize local structure.  ...  In this work we introduce a novel technique to simultaneously measure, report and correct in real time subject motion and changes in B0 field homogeneity, both in and through the imaging plane.  ... 
doi:10.1016/j.neuroimage.2015.11.022 pmid:26584865 pmcid:PMC4733594 fatcat:mo5da6qzpvgarnnhxelt7rf4eu

Motion correction for diffusion weighted SMS imaging

M. Herbst, B.A. Poser, A. Singh, W. Deng, B. Knowles, M. Zaitsev, V.A. Stenger, T. Ernst
2017 Magnetic Resonance Imaging  
Acknowledgements This work was supported by NIH R01DA019912, R01EB011517, and K02DA02056. Michael Herbst was supported by the Alexander von Humboldt Foundation.  ...  In summary, we investigated the benefits of image-based and external motion correction on simultaneous-multislice diffusion-weighted acquisitions at 3T.  ...  In contrast, simultaneous multi-slice imaging (SMS) makes it possible to acquire several slices simultaneously [16] [17] [18] [19] and can considerably shorten volume acquisition times for DTI protocols  ... 
doi:10.1016/j.mri.2016.12.013 pmid:27988191 pmcid:PMC5360491 fatcat:cgkctc4nenguvooj4rqjrwlapa

Three-dimensional cardiovascular image analysis

A.F. Frangl, D. Rueckert, J.S. Duncan
2002 IEEE Transactions on Medical Imaging  
This has been demonstrated with parallel MRI acquisition strategies like SMASH [5] , [6] and SENSE [7] , [8] , with multislice CT imaging [9] - [12] , and using piezoelectric two-dimensional (2-  ...  The authors carry out an in vivo and in vitro evaluation using real-time three-dimensional echocardiography and show a very good agreement of volume measurements between this technique and MRI-based manual  ...  physical models to constrain the recovery of information from images, and the integration of processing modules in vision systems, all with a special interest in using these approaches for medical image  ... 
doi:10.1109/tmi.2002.804442 pmid:12564868 fatcat:yzi4r2lprve2lcca6p56ongjn4

EEG-assisted retrospective motion correction for fMRI: E-REMCOR

Vadim Zotev, Han Yuan, Raquel Phillips, Jerzy Bodurka
2012 NeuroImage  
These TSNR improvements are largely preserved after the subsequent fMRI volume registration and regression of fMRI motion parameters.  ...  The fMRI datasets, corrected using eight to ten EEG-based motion regressors, show significant improvements in temporal SNR (TSNR) of fMRI time series, particularly in the frontal brain regions and near  ...  Acknowledgments This work was supported by the Laureate Institute for Brain Research and the William K. Warren Foundation. We would like to thank Dr. Robert Störmer, Dr. Patrick Britz, and Dr.  ... 
doi:10.1016/j.neuroimage.2012.07.031 pmid:22836172 fatcat:az2tq7uq3vhhnh5srfv6zrngce

Resting State fMRI: Going Through the Motions

Sanam Maknojia, Nathan W. Churchill, Tom A. Schweizer, S. J. Graham
2019 Frontiers in Neuroscience  
Resting state functional magnetic resonance imaging (rs-fMRI) has become an indispensable tool in neuroscience research.  ...  Effective correction methods must be employed, therefore, to distinguish true functional networks from motion-related noise.  ...  Image-Based Methods A more popular method for real-time motion correction involves the use of volumetric image registration to track the change in head position and orientation at each point in the fMRI  ... 
doi:10.3389/fnins.2019.00825 pmid:31456656 pmcid:PMC6700228 fatcat:yve3qt2fbngmthm4wsrbj34cni

MR-Based Cardiac and Respiratory Motion-Compensation Techniques for PET-MR Imaging

Camila Munoz, Christoph Kolbitsch, Andrew J. Reader, Paul Marsden, Tobias Schaeffter, Claudia Prieto
2016 PET Clinics  
Two approaches have been proposed to use MR-measured motion fields to reconstruct a motioncorrected PET image: post-reconstruction registration and motion-compensated image reconstruction.  ...  MR-based motion-correction techniques for PET imaging improve the accuracy of uptake values and increase lesion detectability and contrast.  ...  Motion fields are estimated by nonrigid registration of the 3D volumes to the endexpiratory volume.  ... 
doi:10.1016/j.cpet.2015.09.004 pmid:26952730 fatcat:k5xfjkn6ufdrzghyakiykixd3a

Subject-specific four-dimensional liver motion modeling based on registration of dynamic MRI

Yolanda H. Noorda, Lambertus W. Bartels, Max A. Viergever, Josien P.W. Pluim
2016 Journal of Medical Imaging  
For the technique to be used in clinical practice, however, the issue of liver motion needs to be addressed.  ...  This model can be used for predicting the tumor motion trajectory for treatment planning and to indicate the tumor position for treatment guidance.  ...  Acknowledgments This work was financially supported by the project Mediate (Patient Friendly Medical Intervention) in the framework of the EU research program ITEA (Information Technology for European  ... 
doi:10.1117/1.jmi.3.1.015002 pmid:27493981 pmcid:PMC4961895 fatcat:s5pkjpxkh5hzxnujwrswxeal4u

Imaging of pulmonary perfusion using subtraction CT angiography is feasible in clinical practice

Dagmar Grob, Luuk J. Oostveen, Mathias Prokop, Cornelia M. Schaefer-Prokop, Ioannis Sechopoulos, Monique Brink
2018 European Radiology  
KEY POINTS: • SCT uses motion correction and image subtraction between an unenhanced and an enhanced CT scan to obtain iodine distribution in the pulmonary parenchyma. • SCT could have an added value in  ...  Subtraction computed tomography (SCT) is a technique that uses software-based motion correction between an unenhanced and an enhanced CT scan for obtaining the iodine distribution in the pulmonary parenchyma  ...  In our practice, we use motion correction software for SCT ( SURE Subtraction Lung, Canon Medical Systems) that employs an iterative, non-rigid registration framework to register the unenhanced to the  ... 
doi:10.1007/s00330-018-5740-4 pmid:30255247 pmcid:PMC6510874 fatcat:hla3n5ujunbipmhmzlqoatpwjm

New imaging techniques in the treatment guidelines for lung cancer

C. Schaefer-Prokop, M. Prokop
2002 European Respiratory Journal  
Multislice CT offers further improvement and allows for scanning of the whole chest within a single breath-hold using a thin-section high-resolution technique.  ...  radiography), and morphological features (high resolution imaging at CT) can be used as the basis for nodule differentiation.  ...  Multislice CT produces excellent images that exceed most MRI sections in quality (figs. 1 and 2).  ... 
doi:10.1183/09031936.02.00277902 fatcat:5lfwpdoerbgxvf3vbjcv2pi22e
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