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| Home > Publications database > Simulated MRI images and reference fiber tracts of 99 subjects. |
| Dataset | DKFZ-2020-01042 |
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2020
German Cancer Research Center
Heidelberg
Abstract: This archive contains simulated MRI images (T1, T2, dMRI) of 99 healthy subjects as well as corresponding reference fiber tracts used for the MRI simulation. The archive is primarily intended for the training and validation of fiber tractography methods but is well suited for many other tasks in the area o diffusion-weighted MRI image processing.The simulation was performed using the Fiberfox dMRI simulation tool included in MITK Diffusion. Fiberfox uses reference fiber tracts, generated using TractSeg and MITK Diffusion, and volume fraction maps, generated using MRtrix and FSL, as input to simulate the actual k-space acquisition. This enables highly realistic looking image contrasts and artifacts such as (inter volume) head motion, spikes, eddy currents, ghosts, Gibbs ringing, inhomogeneity induced distortions, signal drift and complex gaussian noise. The reference data was created on the basis of 99 unrelated subjects from the HCP young adult dataset. The simulation parameters including tissue properties, such as T1/T2 relaxation times and diffusivities, as well as scanner parameters, such as TE and TR, were automatically optimized using Optunity to create realistic image contrasts. Logging of the complete simulation process to ensure reproducibility was performed using CmdInterface. This data archive only contains the simulated MRI images and the corresponding reference tracts. Additional data such as the volume fraction maps, simulation parameters, detailed logfiles and additional simulation outputs are not included but might be published at a later timepoint. A more detailed description of the data can be found in the archive, downloadable via the "Fulltext" link at the bottom of the page. This work is supported by the Helmholtz Association Initiative and Networking (https://www.helmholtz.de/en/about_us/the_association/initiating_and_networking/) Fund under project number ZT-I-0003.
Keyword(s): Diffusion-weighted MRI simulation
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