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other. Therefore, some vertebrae will merge with their neighbors, i.e., multiple
nodes may be located very close to each other.
After the optimization, a mean-shift based clustering on the central positions of
the components using the mean height of the vertebral bodies as its bandwidth is
used to merge overlapping components and therefore
find the number of ver-
tebrae [
8
].
Fig. 4 Examples of detection vertebrae in different spinal regions. a An example of cervical
vertebra detection. b An example of thoracic vertebra detection. c An example of lumbar vertebra
detection
