DOI: 10.6084/m9.figshare.29391236.v4
title: ANTsPyMM testing data

description: 📜 Data Use Policy<br>⚠️ **Important:**Use of these data is subject to the PPMI Data Use Agreement (DUA). see data access here<br>Any researcher accessing or processing these data must have:- Registered for access through https://www.ppmi-info.org- Agreed to and been approved under the terms of the **PPMI DUA**<br>Unauthorized distribution, use outside of approved projects, or sharing with unapproved parties is strictly prohibited.<br>---Each subdirectory contains:- `*.nii.gz`: NIfTI image file- `*.json`: Acquisition metadata- (for DTI) `*.bval`, `*.bvec`: Diffusion encoding information<br>---<br>## 🧠 Modalities Included<br>| Modality | Description ||---------------|---------------------------------------------------|| `T1w` | High-resolution T1-weighted anatomical scan || `T2Flair` | T2-weighted FLAIR for white matter lesions || `DTI_LR/RL` | Diffusion tensor imaging with reverse PE || `rsfMRI_LR/RL`| Resting-state fMRI with reverse PE || `NM2DMT` | Neuromelanin-sensitive imaging, multiple echoes |<br>---<br><br>## 🧪 Suggested Usage<br>This dataset is suitable for:- Diffusion tensor modeling and tractography- Structural morphometry- Resting-state functional connectivity- Neuromelanin contrast analysis<br>If using this data in publications, cite PPMI appropriately and acknowledge the data access agreement.<br>---<br>## 🔧 Processing Notes<br>- Images are in NIfTI format, aligned to scanner space.- Direction matrices and voxel spacing are encoded in metadata.- DTI data includes `.bval` and `.bvec` files consistent with FSL/BIDS format.- Dual phase encoding in rsfMRI/DTI can be used for susceptibility distortion correction.<br>---<br>For questions about this dataset or how to process it within a specific pipeline (e.g., ANTs, FSL, AFNI, BIDS), feel free to reach out.<br>└── PPMI└── 101018└── 20210412├── DTI_LR│ └── 1496234│ ├── PPMI-101018-20210412-DTI_LR-1496234.bval│ ├── PPMI-101018-20210412-DTI_LR-1496234.bvec│ ├── PPMI-101018-20210412-DTI_LR-1496234.json│ └── PPMI-101018-20210412-DTI_LR-1496234.nii.gz├── DTI_RL│ └── 1496263│ ├── PPMI-101018-20210412-DTI_RL-1496263.bval│ ├── PPMI-101018-20210412-DTI_RL-1496263.bvec│ ├── PPMI-101018-20210412-DTI_RL-1496263.json│ └── PPMI-101018-20210412-DTI_RL-1496263.nii.gz├── NM2DMT│ ├── 1496228│ │ ├── PPMI-101018-20210412-NM2DMT-1496228.json│ │ └── PPMI-101018-20210412-NM2DMT-1496228.nii.gz│ ├── 1496229│ │ ├── PPMI-101018-20210412-NM2DMT-1496229.json│ │ └── PPMI-101018-20210412-NM2DMT-1496229.nii.gz│ ├── 1496230│ │ ├── PPMI-101018-20210412-NM2DMT-1496230.json│ │ └── PPMI-101018-20210412-NM2DMT-1496230.nii.gz│ ├── 1496231│ │ ├── PPMI-101018-20210412-NM2DMT-1496231.json│ │ └── PPMI-101018-20210412-NM2DMT-1496231.nii.gz│ └── 1496232│ ├── PPMI-101018-20210412-NM2DMT-1496232.json│ └── PPMI-101018-20210412-NM2DMT-1496232.nii.gz├── rsfMRI_LR│ └── 1496227│ ├── PPMI-101018-20210412-rsfMRI_LR-1496227.json│ └── PPMI-101018-20210412-rsfMRI_LR-1496227.nii.gz├── rsfMRI_RL│ └── 1496226│ ├── PPMI-101018-20210412-rsfMRI_RL-1496226.json│ └── PPMI-101018-20210412-rsfMRI_RL-1496226.nii.gz├── T1w│ └── 1496225│ ├── PPMI-101018-20210412-T1w-1496225.json│ └── PPMI-101018-20210412-T1w-1496225.nii.gz└── T2Flair└── 1496233├── PPMI-101018-20210412-T2Flair-1496233.json└── PPMI-101018-20210412-T2Flair-1496233.nii.gz<br>22 directories, 26 filesResults notes:<br>four files demonstrate results of repeated runs on the same computer with different numbers of threads:PPMI-101018-20210412-1496225-th1-mmwide_run1.csv PPMI-101018-20210412-1496225-th4-mmwide_run1.csvPPMI-101018-20210412-1496225-th1-mmwide_run2.csv PPMI-101018-20210412-1496225-th4-mmwide_run2.csvth1 = single thread th4 = 4 threadsMacBook-Pro.local 24.5.0 Darwin Kernel Version 24.5.0: Tue Apr 22 19:54:25 PDT 2025; root:xnu-11417.121.6~2/RELEASE_ARM64_T6020 arm64