Full body segmentation on CT

TotalSegmentator's default AI task outlines 117 structures on a CT scan in one pass: organs, bones, muscles, and major vessels, down to each vertebra, each rib, and all five lung lobes. Research groups use this whole body CT segmentation to measure organ volumes and Hounsfield units across a cohort, build reference values, and compare groups. Attach a PET or SPECT scan of the same person and every outline also gives uptake: SUV per organ on PET, and counts or activity on SPECT, with the liver or the aorta as a reference region.

Find answers to research questions like: How do organ and muscle volumes vary with age and sex? How does uptake in organs, muscles, and bones differ between groups? Do organ volumes and CT density relate to health outcomes?

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Axial slice of neck to thigh CT, outlined: Lung upper lobe left, Lung lower lobe left, Lung upper lobe right, Esophagus, Trachea, Vertebrae T4, Vertebrae T3, Vertebrae T2, Brachiocephalic trunk, Subclavian artery right, and 22 more
Axial
Sagittal slice of neck to thigh CT, outlined: Liver, Stomach, Pancreas, Lung upper lobe right, Lung middle lobe right, Lung lower lobe right, Esophagus, Trachea, Thyroid gland, Small bowel, and 43 more
Sagittal
Coronal slice of neck to thigh CT, outlined: Spleen, Kidney right, Kidney left, Liver, Stomach, Pancreas, Adrenal gland right, Adrenal gland left, Lung upper lobe left, Lung lower lobe left, and 60 more
Coronal

Found in this example

  • Spleen
  • Kidney right
  • Kidney left
  • Liver
  • Stomach
  • Pancreas
  • Adrenal gland right
  • Adrenal gland left
  • Lung upper lobe left
  • Lung lower lobe left
  • Lung upper lobe right
  • Lung middle lobe right
  • Lung lower lobe right
  • Esophagus
  • Trachea
  • Thyroid gland
  • Small bowel
  • Duodenum
  • Colon
  • Urinary bladder
  • Prostate
  • Sacrum
  • Vertebrae S1
  • Vertebrae L5
  • Vertebrae L4
  • Vertebrae L3
  • Vertebrae L2
  • Vertebrae L1
  • Vertebrae T12
  • Vertebrae T11
  • Vertebrae T10
  • Vertebrae T9
  • Vertebrae T8
  • Vertebrae T7
  • Vertebrae T6
  • Vertebrae T5
  • Vertebrae T4
  • Vertebrae T3
  • Vertebrae T2
  • Vertebrae T1
  • Vertebrae C7
  • Vertebrae C6
  • Heart
  • Aorta
  • Pulmonary vein
  • Brachiocephalic trunk
  • Subclavian artery right
  • Subclavian artery left
  • Common carotid artery right
  • Common carotid artery left
  • Brachiocephalic vein left
  • Brachiocephalic vein right
  • Superior vena cava
  • Inferior vena cava
  • Portal vein and splenic vein
  • Iliac artery left
  • Iliac artery right
  • Iliac vena left
  • Iliac vena right
  • Humerus left
  • Scapula left
  • Scapula right
  • Clavicula left
  • Clavicula right
  • Femur left
  • Femur right
  • Hip left
  • Hip right
  • Spinal cord
  • Gluteus maximus right
  • Gluteus medius left
  • Gluteus medius right
  • Gluteus minimus left
  • Gluteus minimus right
  • Autochthon left
  • Autochthon right
  • Iliopsoas left
  • Iliopsoas right
  • Skull
  • Rib left 1
  • Rib left 2
  • Rib left 3
  • Rib left 4
  • Rib left 5
  • Rib left 6
  • Rib left 7
  • Rib left 8
  • Rib left 9
  • Rib left 10
  • Rib right 1
  • Rib right 2
  • Rib right 3
  • Rib right 4
  • Rib right 5
  • Rib right 6
  • Rib right 7
  • Rib right 8
  • Rib right 9
  • Rib right 10
  • Rib right 11
  • Sternum
  • Costal cartilages
  • Gallbladder
  • Kidney cyst right
  • Atrial appendage left
  • Humerus right
  • Gluteus maximus left
  • Rib left 11
  • Rib left 12
  • Rib right 12

Also finds: Kidney cyst left, Vertebrae C5, Vertebrae C4, Vertebrae C3, Vertebrae C2, Vertebrae C1, Brain

Example scan: neck to thigh CT, TotalSegmentator dataset