TotalSegmentator Organs: CT Scans with Multi-Organ Segmentation Annotations

The TotalSegmentator Organs dataset contains CT scans with dense segmentation annotations for 14 anatomical structures. The dataset is provided by MedOtter and was last updated on October 30, 2025. The data format is NIfTI (.nii.gz).

Use Cases

• Train segmentation models for organs like the liver and kidneys based on CT scan annotations.
• Benchmark multi-organ segmentation algorithms using the dense annotations provided.
• Develop anatomical landmark detection tools based on the annotated organ structures.
• Create synthetic medical imaging data by leveraging the annotated organ masks.
• Study anatomical relationships and spatial distributions of organs within CT scans.

Strengths

• Annotations cover 14 specific organs and anatomical structures, including adrenal glands, colon, duodenum, esophagus, gallbladder, kidneys, liver, lungs, pancreas, small bowel, spleen, stomach, trachea, and bladder.
• Data is stored in the NIfTI format, a standard for medical imaging data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

MedOtter

Freshness

Last updated 2025-10-30 23:05:51; freshness should be verified.