scholarly journals Volumetric navigators for real-time motion correction in diffusion tensor imaging

2012 ◽  
Vol 68 (4) ◽  
pp. 1097-1108 ◽  
Author(s):  
A. Alhamud ◽  
M. Dylan Tisdall ◽  
Aaron T. Hess ◽  
Khader M. Hasan ◽  
Ernesta M. Meintjes ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Real Time ◽  
Motion Correction ◽  
Diffusion Tensor ◽  
Time Motion

scholarly journals Real-time optical motion correction for diffusion tensor imaging

2011 ◽  
Vol 66 (2) ◽  
pp. 366-378 ◽  
Author(s):  
Murat Aksoy ◽  
Christoph Forman ◽  
Matus Straka ◽  
Stefan Skare ◽  
Samantha Holdsworth ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Real Time ◽  
Motion Correction ◽  
Diffusion Tensor ◽  
Optical Motion

scholarly journals 3D GABA imaging with real-time motion correction, shim update and reacquisition of adiabatic spiral MRSI

NeuroImage ◽  
2014 ◽  
Vol 103 ◽  
pp. 290-302 ◽  
Author(s):  
Wolfgang Bogner ◽  
Borjan Gagoski ◽  
Aaron T. Hess ◽  
Himanshu Bhat ◽  
M. Dylan Tisdall ◽  
...  
Keyword(s):  
Real Time ◽  
Motion Correction ◽  
Time Motion

scholarly journals In utero diffusion tensor imaging of the fetal brain: a reproducibility study

2017 ◽  
Author(s):  
András Jakab ◽  
Ruth O`Gorman Tuura ◽  
Christian Kellenberger ◽  
Ianina Scheer
Keyword(s):  
Diffusion Tensor Imaging ◽  
White Matter ◽  
Corpus Callosum ◽  
Coefficient Of Variation ◽  
Motion Correction ◽  
Diffusion Tensor ◽  
Structural Similarity ◽  
Image Correlation ◽  
Normal Brain ◽  
Slice Thickness

AbstractOur purpose was to evaluate the within-subject reproducibility of in utero diffusion tensor imaging (DTI) metrics and the visibility of major white matter structures.Images for 30 fetuses (20-33. postmenstrual weeks, normal neurodevelopment: 6 cases, cerebral pathology: 24 cases) were acquired on 1.5T or 3.0T MRI. DTI with 15 diffusion-weighting directions was repeated three times for each case, TR/TE: 2200/63 ms, voxel size: 1*1 mm, slice thickness: 3-5 mm, b-factor: 700 s/mm2. Reproducibility was evaluated from structure detectability, variability of DTI measures using the coefficient of variation (CV), image correlation and structural similarity across repeated scans for six selected structures. The effect of age, scanner type, presence of pathology was determined using Wilcoxon rank sum test.White matter structures were detectable in the following percentage of fetuses in at least two of the three repeated scans: corpus callosum genu 76%, splenium 64%, internal capsule, posterior limb 60%, brainstem fibers 40% and temporooccipital association pathways 60%. The mean CV of DTI metrics ranged between 3% and 14.6% and we measured higher reproducibility in fetuses with normal brain development. Head motion was negatively correlated with reproducibility, this effect was partially ameliorated by motion-correction algorithm using image registration. Structures on 3.0 T had higher variability both with- and without motion correction.Fetal DTI is reproducible for projection and commissural bundles during mid-gestation, however, in 16-30% of the cases, data were corrupted by artifacts, resulting in impaired detection of white matter structures. To achieve robust results for the quantitative analysis of diffusivity and anisotropy values, fetal-specific image processing is recommended and repeated DTI is needed to ensure the detectability of fiber pathways.AbbreviationsADaxial diffusivity;CCAcorpus callosum agenesis;CVcoefficient of variation,DTIdiffusion tensor imaging;FAfractional anisotropy;GWgestational week;MDmean diffusivity;RDradial diffusivity;ROIregion of interest;SSIMstructural similarity index

scholarly journals Real‐time strategy video game experience and structural connectivity – A diffusion tensor imaging study

2018 ◽  
Vol 39 (9) ◽  
pp. 3742-3758 ◽  
Author(s):  
Natalia Kowalczyk ◽  
Feng Shi ◽  
Mikolaj Magnuski ◽  
Maciek Skorko ◽  
Pawel Dobrowolski ◽  
...  
Keyword(s):  
Diffusion Tensor Imaging ◽  
Real Time ◽  
Video Game ◽  
Diffusion Tensor ◽  
Structural Connectivity ◽  
Imaging Study ◽  
Diffusion Tensor Imaging Study

Motion correction algorithms for pediatric spinal cord diffusion tensor imaging

2012 ◽  
Author(s):  
Devon M. Middleton ◽  
Feroze B. Mohamed ◽  
Nadia Barakat ◽  
Louis N. Hunter ◽  
Jurgen Finsterbusch ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Diffusion Tensor Imaging ◽  
Motion Correction ◽  
Diffusion Tensor

scholarly journals Histotripsy Cardiac Therapy System Integrated with Real-Time Motion Correction

2013 ◽  
Vol 39 (12) ◽  
pp. 2362-2373 ◽  
Author(s):  
Ryan M. Miller ◽  
Yohan Kim ◽  
Kuang-Wei Lin ◽  
Charles A. Cain ◽  
Gabe E. Owens ◽  
...  
Keyword(s):  
Real Time ◽  
Motion Correction ◽  
Time Motion ◽  
Cardiac Therapy
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