Refined vertebrae segmentation on CT

Two models run for this TotalSegmentator vertebrae segmentation on CT: the first names the vertebral bodies one by one, C1 through L5, and the second sharpens the borders. It takes longer than the unrefined vertebrae AI task, and the sharper outlines suit studies of vertebral size and shape. On PET or SPECT, a normal vertebral body can serve as a reference region for the rest of the spine.

Find answers to research questions like: How much does the height of each vertebral body change between two scans? How does uptake in the same vertebral body change between scan dates? How does vertebral size change from the neck to the lower back?

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Axial slice of neck to thigh CT, outlined: Vertebrae L2, Vertebrae L3
Axial
Sagittal slice of neck to thigh CT, outlined: Vertebrae C7, Vertebrae T1, Vertebrae T2, Vertebrae T3, Vertebrae T4, Vertebrae T5, Vertebrae T6, Vertebrae T7, Vertebrae T8, Vertebrae T9, and 8 more
Sagittal
Coronal slice of neck to thigh CT, outlined: Vertebrae T4, Vertebrae T5, Vertebrae T6, Vertebrae T7, Vertebrae T8, Vertebrae T9, Vertebrae T10, Vertebrae T11, Vertebrae T12, Vertebrae L1, and 4 more
Coronal

Found in this example

  • Vertebrae C7
  • Vertebrae T1
  • Vertebrae T2
  • Vertebrae T3
  • Vertebrae T4
  • Vertebrae T5
  • Vertebrae T6
  • Vertebrae T7
  • Vertebrae T8
  • Vertebrae T9
  • Vertebrae T10
  • Vertebrae T11
  • Vertebrae T12
  • Vertebrae L1
  • Vertebrae L2
  • Vertebrae L3
  • Vertebrae L4
  • Vertebrae L5

Also finds: Vertebrae C1, Vertebrae C2, Vertebrae C3, Vertebrae C4, Vertebrae C5, Vertebrae C6

Example scan: neck to thigh CT, TotalSegmentator dataset