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universitytehran/MRI-GBM-MET

MRI-GBM-MET: Brain MRI Dataset (GBM vs. MET) Dataset Summary The MRI-GBM-MET dataset is a collection of axial brain MRI scans from 90 human subjects diagnosed with either Glioblastoma (GBM) or Brain Metastasis (MET). It is designed to support medical image classification, diagnostic research, and multimodal evaluation tasks. All subject-level diagnostic labels are histopathologically confirmed (post-surgical biopsy or resection) and are completely independent of… See the full description on the dataset page: https://huggingface.co/datasets/universitytehran/MRI-GBM-MET.

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Dataset Card

MRI-GBM-MET: Brain MRI Dataset (GBM vs. MET)

Dataset Summary

The MRI-GBM-MET dataset is a collection of axial brain MRI scans from 90 human subjects diagnosed with either Glioblastoma (GBM) or Brain Metastasis (MET). It is designed to support medical image classification, diagnostic research, and multimodal evaluation tasks.

All subject-level diagnostic labels are histopathologically confirmed (post-surgical biopsy or resection) and are completely independent of radiological masks. The dataset includes pixel-level expert annotations from board-certified neuroradiologists used to identify lesion-containing slices.

Dataset Configurations

For each subject and modality (T1CE and T2), four distinct configurations are provided:

ConfigurationDescription
FullVolumeThe complete axial sequence as acquired during the MRI scan.
ROISlicesFull-frame axial slices that contain the expert-annotated lesion.
ROICropsLocalized views of the lesion area, cropped from ROISlices with a standardized margin.
NonROISlices from the FullVolume that do not contain any annotated lesion (negative control).

Key Statistics

  • —Total Subjects: 90 (45 Glioblastoma, 45 Brain Metastasis)
  • —Total Slices: 4,091 images in .jpg format
  • —T1-weighted Contrast-Enhanced (T1CE) MRI: 2,199 slices
  • —T2-weighted MRI: 1,892 slices
  • —Sequence Length per Subject: Median of 20 slices (range 15–160)
  • —ROI Slices per Subject:
  • —T1CE: Median of 8 slices
  • —T2: Median of 11 slices

Technical Specifications & Metadata

  • —Format: All images are in .jpg format.
  • —Naming Convention: Files are named as slice_{index}.jpg where {index} represents the absolute global sequence position within the original scan.
  • —Consistency: Filenames are aligned across configurations. If a lesion is located on slice 10, the corresponding image slice_009.jpg is present in FullVolume, ROISlices, and ROICrops.
  • —Integrity Rule: For any subject sequence: $$\text{Total Slices (FullVolume)} = \text{ROISlices count} + \text{NonROI count}$$