scholarly journals Patch Based Synthesis of Whole Head MR Images: Application To EPI Distortion Correction

2016 ◽  
pp. 146-156 ◽  
Author(s):  
Snehashis Roy ◽  
Yi-Yu Chou ◽  
Amod Jog ◽  
John A. Butman ◽  
Dzung L. Pham
Keyword(s):  
Distortion Correction ◽  
Mr Images

scholarly journals Towards a comprehensive framework for movement and distortion correction of diffusion MR images: Within volume movement

NeuroImage ◽  
2017 ◽  
Vol 152 ◽  
pp. 450-466 ◽  
Author(s):  
Jesper L.R. Andersson ◽  
Mark S. Graham ◽  
Ivana Drobnjak ◽  
Hui Zhang ◽  
Nicola Filippini ◽  
...  
Keyword(s):  
Distortion Correction ◽  
Mr Images ◽  
Diffusion Mr ◽  
Comprehensive Framework

Postprocessing of MR images: noise filtering and distortion correction

1998 ◽  
Author(s):  
Juan M. Parra Robles ◽  
Evelio R. Gonzalez ◽  
Juan E. Paz ◽  
Nancy A. Alvarez Roca
Keyword(s):  
Distortion Correction ◽  
Noise Filtering ◽  
Mr Images

A complete distortion correction for MR images: II. Rectification of static-field inhomogeneities by similarity-based profile mapping

2005 ◽  
Vol 50 (11) ◽  
pp. 2651-2661 ◽  
Author(s):  
Stefan A Reinsberg ◽  
Simon J Doran ◽  
Elizabeth M Charles-Edwards ◽  
Martin O Leach
Keyword(s):  
Static Field ◽  
Distortion Correction ◽  
Mr Images

Evaluation of distortion correction of diffusion-weighted MR images of human cervix

2012 ◽  
Author(s):  
Maysam Jafar ◽  
Sharon Giles ◽  
Veronica Morgan ◽  
Maria Schmidt ◽  
Martin O. Leach ◽  
...  
Keyword(s):  
Distortion Correction ◽  
Mr Images ◽  
Diffusion Weighted ◽  
Human Cervix

scholarly journals Nonlinear distortion correction of diffusion MR images improves quantitative DTI measurements in glioblastoma

2013 ◽  
Vol 116 (3) ◽  
pp. 551-558 ◽  
Author(s):  
Davis C. Woodworth ◽  
Whitney B. Pope ◽  
Linda M. Liau ◽  
Hyun J. Kim ◽  
Albert Lai ◽  
...  
Keyword(s):  
Nonlinear Distortion ◽  
Distortion Correction ◽  
Mr Images ◽  
Diffusion Mr

A complete distortion correction for MR images: I. Gradient warp correction

2005 ◽  
Vol 50 (7) ◽  
pp. 1343-1361 ◽  
Author(s):  
Simon J Doran ◽  
Liz Charles-Edwards ◽  
Stefan A Reinsberg ◽  
Martin O Leach
Keyword(s):  
Distortion Correction ◽  
Mr Images

scholarly journals Measuring geometric accuracy in magnetic resonance imaging with 3D-printed phantom and nonrigid image registration

2019 ◽  
Vol 33 (3) ◽  
pp. 401-410
Author(s):  
Katri Nousiainen ◽  
Teemu Mäkelä
Keyword(s):  
Magnetic Resonance ◽  
Image Registration ◽  
Control Point ◽  
Reference Method ◽  
Distortion Correction ◽  
Reference Points ◽  
Geometric Accuracy ◽  
Mr Images ◽  
Nonrigid Image Registration ◽  
3D Printed

Abstract Objective We aimed to develop a vendor-neutral and interaction-free quality assurance protocol for measuring geometric accuracy of head and brain magnetic resonance (MR) images. We investigated the usability of nonrigid image registration in the analysis and looked for the optimal registration parameters. Materials and methods We constructed a 3D-printed phantom and imaged it with 12 MR scanners using clinical sequences. We registered a geometric-ground-truth computed tomography (CT) acquisition to the MR images using an open-source nonrigid-registration-toolbox with varying parameters. We applied the transforms to a set of control points in the CT image and compared their locations to the corresponding visually verified reference points in the MR images. Results With optimized registration parameters, the mean difference (and standard deviation) of control point locations when compared to the reference method was (0.17 ± 0.02) mm for the 12 studied scanners. The maximum displacements varied from 0.50 to 1.35 mm or 0.89 to 2.30 mm, with vendors’ distortion correction on or off, respectively. Discussion Using nonrigid CT–MR registration can provide a robust and relatively test-object-agnostic method for estimating the intra- and inter-scanner variations of the geometric distortions.

45 Quantification of geometric distortion on MR images and evaluation of the impact of distortion correction

2018 ◽  
Vol 56 ◽  
pp. 25-26
Author(s):  
L. Vanquin ◽  
F. Crop ◽  
E. Rault ◽  
A. Wagner ◽  
R. Cayez ◽  
...  
Keyword(s):  
Distortion Correction ◽  
Geometric Distortion ◽  
Mr Images ◽  
The Impact

scholarly journals Review and comparison of geometric distortion correction schemes in MR images used in stereotactic radiosurgery applications

2017 ◽  
Vol 931 ◽  
pp. 012031 ◽  
Author(s):  
E. P. Pappas ◽  
D. Dellios ◽  
I. Seimenis ◽  
A. Moutsatsos ◽  
E. Georgiou ◽  
...  
Keyword(s):  
Stereotactic Radiosurgery ◽  
Distortion Correction ◽  
Geometric Distortion ◽  
Mr Images

scholarly journals Investigation of a 3D system distortion correction method for MR images

2010 ◽  
Vol 11 (1) ◽  
pp. 200-216 ◽  
Author(s):  
Teodor Stanescu ◽  
Hans-Sonke Jans ◽  
Keith Wachowicz ◽  
B. Gino Fallone
Keyword(s):  
Correction Method ◽  
Distortion Correction ◽  
Mr Images
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