Medical Imaging
Collection
A collection for medical imaging datasets and models • 8 items • Updated • 1
volume_id int32 0 495 | slice_id int32 0 255 | age int32 19 80 | sex stringclasses 3
values | image imagewidth (px) 256 256 |
|---|---|---|---|---|
0 | 0 | 78 | F | |
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This dataset is derived from the Southwest University Adult Lifespan Dataset (SALD), a large-scale cross-sectional neuroimaging dataset designed to characterize brain structure and function across the adult lifespan. The study recruited community-dwelling adults between ages 19 and 80 from Southwest University in Chongqing, China. At each session, participants contributed T1-weighted structural MRI images alongside behavioral and cognitive assessments. Here, we provide a 2D slice-based version of T1-weighted (T1w) MRI volumes, extracted from cognitively normal subjects across the full age range.
📦 Dataset Structure
Each entry corresponds to a single 2D slice from a 3D MRI volume:
volume_id→ Unique identifier for the subject/volumeslice_id→ Index of the slice within the volumeage→ Age of the participant at time of scansex→ Biological sex of the participant ('M'/'F')image→ 2D MRI slice
⚙️ Preprocessing
- Only T1-weighted (T1w) volumes were used
- Volumes were converted into 2D axial slices
- Slices were normalized and resized to 256×256
⚠️ Caveat
Late slices in each volume have noise in them.
🚀 Usage
from datasets import load_dataset
import matplotlib.pyplot as plt
ds = load_dataset("chehablab/SALD_t1w", split="train")
sample = ds[314]
img = sample["image"]
plt.imshow(img, cmap="gray")
plt.title(f"Volume {sample['volume_id']} | Slice {sample['slice_id']} | Age {sample['age']} | Sex {sample['sex']}")
plt.axis("off")
plt.show()
📚 Citation
If you use this dataset, please acknowledge our lab Chehab Lab and cite the original SALD dataset:
@article {Wei177279,
author = {Wei, Dongtao and Zhuang, Kaixiang and Chen, Qunlin and Yang, Wenjing and Liu, Wei and Wang, Kangcheng and Sun, Jiangzhou and Qiu, Jiang},
title = {Structural and functional MRI from a cross-sectional Southwest University Adult lifespan Dataset (SALD)},
year = {2018},
doi = {10.1101/177279},
publisher = {Cold Spring Harbor Laboratory},
journal = {bioRxiv}
}
License
This work is licensed under a Creative Commons CC BY-NC-SA 4.0 License.
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