10.5061/DRYAD.8CZ8W9GPV
Gomez, Arnold
0000-0002-5564-2233
Johns Hopkins University
Bayly, Philip
Washington University in St. Louis
Butman, John
National Institutes of Health
Pham, Dzung
Henry M. Jackson Foundation
Prince, Jerry
Johns Hopkins University
Knutsen, Andrew
Henry M. Jackson Foundation
Atlas of impact-induced, in vivo human brain kinematics
Dryad
dataset
2021
Brain Biomechanics
Brain MRI
3D motion tracking
Soft tissue deformation
Dynamic body acceleration
National Institute of Neurological Disorders and Stroke
https://ror.org/01s5ya894
R01/R56-NS055951
National Institute of Neurological Disorders and Stroke
https://ror.org/01s5ya894
U01 NS112120
2021-05-28T00:00:00Z
2021-05-28T00:00:00Z
en
https://doi.org/10.1109/TBME.2018.2874591
https://doi.org/10.1109/TBME.2018.2874591
https://doi.org/10.1016/j.brain.2020.100015
2813915727 bytes
4
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Accelerations cause brain tissue to move, and this data summarizes
MRI-based observations of 3D brain movement during an in vivo impact
(brain-skull displacement and brain tissue deformation). The data is a
group average, or atlas, of indivudial data from two groups of study
participants: neck extension (n=10) and neck rotation (n=9).
Brain tissue motion data was extracted from MRI sequences acquired while
the heads of study participatns were subjected to a mild acceleration
inside the MRI scanner. The resulting resulting images were processed
using a tissue tracking algorithm. The output of the algorithm consisted
of skull-brain displacements and strains in each of the participants. This
data consists of a group average across the individuals i.e., a
representative movement pattern of displacement and strain, as well as its
varability.
READ ME Atlas (a group average) of brain motion data acquired via MRI
during a mild acceleration of human heads. Two folders are given: one for
an impact during neck rotation and one impact during neck extension. The
data is in ascii format that can be read by humans or machines. The
software that may be used for visualization appears below. Each vtk file
contains the following fields defined in a mesh with nodal and cell data:
1) Mesh locations (float 3d vector stored as
'unstructured_grid') 2) Mesh connectivity (integer scalar 4d
connectivity vector 'cells') 3) Atlas MRI T1-weighted magnitude
(scalar stored at the nodes 'T1') 3) Group variability in MRI
T1-weighted magnitude (scalar stored at the nodes 'T1_std') 4)
Atlas Displacement (3d vector time sequence stored at the nodes
'disp') 5) Group variability in Displacement (3d vector time
sequence stored at the nodes 'disp_std') 6) Atlas Strain tensor
(6d vector time sequence stored at the cells 'E1') 7) Max shear
strain from atlas strain tensor (scalar time sequence stored at the cells
'GmaxT2') 8) Variability in Max shear strain (scalar time
sequence stored at the cells 'GmaxT2_std') 9) Group average of
individual max shear strains (scalar time sequence stored at the cells
'GmaxT3') 10) Variability Group average of individual max shear
strains (scalar time sequence stored at the cells 'GmaxT3_std')
A description of the vtk format appears here:
https://vtk.org/wp-content/uploads/2015/04/file-formats.pdf Descriptions
of visualization software appear here:
https://en.wikipedia.org/wiki/ParaView https://en.wikipedia.org/wiki/VisIt