The application of three-dimensional quantitative computed tomography to the maxillofacial skeleton

Dento Maxillo Facial Radiology
K MakiY Shibaski

Abstract

To develop a method for three-dimensional quantitative computed tomography (QCT) of the maxillofacial skeleton. The linearity of reference phantom consisting of five hydroxyapatite (HA) rods was tested under various conditions, including the size of field of view, the position of object, and reconstruction algorithm, on three different scanners. The calibrated HA concentration value and the absolute Ca content of the mandible removed from fresh cadaver was compared in order to evaluate the calibration error. There was a high correlation between average CT number and HA concentration in the phantom rods. There was a 4-5% difference in results from the three scanners. High density areas, corresponding to more than 75% HA, were extracted from the original image. Data were reconstructed three-dimensionally and combined using a 32-bit computer system. A three-dimensional distribution of bone density superimposed on the maxillofacial skeleton was produced. Three-dimensional QCT of the maxillofacial skeleton has potential as a means of analysing bone density. Difference in performance of different CT scanners should be considered when comparing results.

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Citations

Jan 5, 2002·Medical Engineering & Physics·P HomolkaH Bergmann
Apr 26, 2000·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·K MakiY Shibasaki
Apr 1, 2011·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Denise SwastyArthur J Miller
Jan 5, 2008·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Hyo-Sang ParkTae-Geon Kwon
Sep 13, 2003·Clinical Oral Implants Research·Andreas BeerPeter Homolka
Nov 11, 2003·Orthodontics & Craniofacial Research·K MakiA J Miller
Dec 20, 2005·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Hidemasa SatoKazutaka Kasai
Nov 14, 2013·Clinical Implant Dentistry and Related Research·Alfonso Miguel-SánchezFabio Camacho-Alonso
Jul 22, 2014·Journal of the Korean Association of Oral and Maxillofacial Surgeons·Suseok OhJongrak Hong
May 26, 2007·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Jackie Badawi-Fayad, Emmanuel-Alain Cabanis

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