1983 saw a major breakthrough in the treatment of facial deformities. When the first three-dimensional reconstruction of a human head using CT scans was presented to the medical world. The images allowed plastic surgeons a far more precise way of planning surgical procedures. Farhana Haider has been speaking to radiologist Dr Michael Vannier who invented the 3D imaging technique which has revolutionised medicine.Photo: Three-dimensional CT scan of a male skull and arterial system. Credit SPL