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Synthetic MRI dataset

Created with NV-Generate-CTMR, by running the rflow-mr-brain model.

Variants

Sample

The sample/ directory contains generated 3D brain MRI NIfTI images for T1, T2, FLAIR, and SWI modalities.

It includes both whole-brain images and skull-stripped images:

Folder Description
sample/mri_t1/ T1 whole-brain MRI
sample/mri_t2/ T2 whole-brain MRI
sample/mri_flair/ FLAIR whole-brain MRI
sample/mri_swi/ SWI whole-brain MRI
sample/mri_t1_skull_stripped/ T1 skull-stripped brain MRI
sample/mri_t2_skull_stripped/ T2 skull-stripped brain MRI
sample/mri_flair_skull_stripped/ FLAIR skull-stripped brain MRI
sample/mri_swi_skull_stripped/ SWI skull-stripped brain MRI

Each folder contains 100 generated images. The whole-brain and skull-stripped samples were generated in separate runs, using the corresponding rflow-mr-brain modality ids for each run.

Default FOV 256/128

The default_fov_256_128/ directory contains generated 3D brain MRI NIfTI images for T1, T2, FLAIR, and SWI modalities. It uses the recommended MR brain FOV presets from the NV-Generate-CTMR inference guide, with voxel dimensions set to 256 x 256 x 128 for axial scans, 128 x 256 x 256 for sagittal scans, and 256 x 128 x 256 for coronal scans.

It includes both whole-brain images and skull-stripped images:

Folder pattern Description
default_fov_256_128/whole_brain/<modality>/<plane>/ Whole-brain MRI
default_fov_256_128/skull_stripped/<modality>/<plane>/ Skull-stripped brain MRI

Each leaf folder contains 100 generated images. T1, T2, and FLAIR are provided for axial, sagittal, and coronal planes. SWI is provided for axial scans only, matching the inference guide warning that SWI sagittal and coronal training coverage is very limited.

Modality Whole-brain id Skull-stripped id Plane Dim Spacing [mm] Approx. FOV [mm]
T1 9 29 axial 256 x 256 x 128 0.94 x 0.94 x 1.36 240.64 x 240.64 x 174.08
T1 9 29 sagittal 128 x 256 x 256 1.38 x 0.98 x 0.98 176.64 x 250.88 x 250.88
T1 9 29 coronal 256 x 128 x 256 0.94 x 1.56 x 0.94 240.64 x 199.68 x 240.64
T2 10 30 axial 256 x 256 x 128 0.94 x 0.94 x 1.23 240.64 x 240.64 x 157.44
T2 10 30 sagittal 128 x 256 x 256 1.27 x 0.94 x 0.94 162.56 x 240.64 x 240.64
T2 10 30 coronal 256 x 128 x 256 0.78 x 1.41 x 0.78 199.68 x 180.48 x 199.68
FLAIR 11 31 axial 256 x 256 x 128 0.98 x 0.98 x 1.37 250.88 x 250.88 x 175.36
FLAIR 11 31 sagittal 128 x 256 x 256 1.38 x 0.98 x 0.98 176.64 x 250.88 x 250.88
FLAIR 11 31 coronal 256 x 128 x 256 0.98 x 1.56 x 0.98 250.88 x 199.68 x 250.88
SWI 20 32 axial 256 x 256 x 128 0.90 x 0.90 x 1.13 230.40 x 230.40 x 144.64
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