Development of imaging selection criteria and procedures should precede cephalometric assessment with cone-beam computed tomography.
Cone-beam computed tomography (CBCT) systems for craniofacial imaging are now available from several manufacturers. CBCT potentially provides opportunities for 3-dimensional cephalometrics in orthodontic assessment of bony landmarks and air-bounded surfaces such as the facial skin. Two-dimensional cephalogram simulation could facilitate the transfer of growth projections from existing data sets as a starting point for use of a new 3-dimensional paradigm. Three methods are described to simulate conventional 2-dimensional cephalograms from CBCT images and volumetric data sets. However, certain precautions are required to assure that selection criteria and imaging parameters guarantee a radiation dose that is as low as reasonably achievable.
Farman
Allan G
AG
Department of Surgical and Hospital Dentistry, School of Dentistry, University of Louisville, Louisville, Ky 40292, USA. agfarm01@louisville.edu
Scarfe
William C
WC
D000465:Algorithms; D002508:Cephalometry / Q000295:instrumentation*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008310:Malocclusion / Q000000981:diagnostic imaging*; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed / Q000379:methods*