KRMayD/Brain_MRI_Dataset

Brain MRI Used Data for Gaussian vs SD DPO

This repository release contains the data used for the final matched comparison between Gaussian-noise and SD-generated negative images in Brain MRI DPO training, together with the held-out Figshare segmentation test set.

All released artifacts are located under Brain_MRI_Used_Data_SD/.

Included data

Split or component	Count
DPO positive training images	15,320
Unique lesion masks referenced by training rows	11,570
Gaussian negative training images	15,320
SD negative training images	15,320
Held-out Figshare test images	600
Held-out Figshare test masks	600

Manifests

• Brain_MRI_Used_Data_SD/train/csv/dpo_train_gaussian_15320.csv
• Brain_MRI_Used_Data_SD/train/csv/dpo_train_sd_15320.csv

The two DPO manifests share the same positive images, masks, and captions. Only the negative-image source differs.

Caption metadata

• Brain_MRI_Used_Data_SD/metadata/base_caption_templates_100.*
• Brain_MRI_Used_Data_SD/metadata/negative_caption_templates_100.*
• Brain_MRI_Used_Data_SD/metadata/caption_construction.json

The manifest paths are repository-relative and contain no machine-specific home directory prefixes.