The patient was a 64-year-old woman, who stabbed her neck with a kitchen knife in an attempt to commit suicide. The tip of the knife was chipped and lodged into the first thoracic vertebra. It was removed using a drill.

A 51-year-old man underwent surgery after being diagnosed with a flail chest by 4D-CT. 4D-CT adds a time axis to 3D-CT; hence, it can be performed in patients with a flail segment to aid in pre-operative evaluation of the most effective fixation site.