title: Feasibility of local CT of dental tissues.
abstract: OBJECTIVE
  To prove the feasibility of a local CT system as a method of CT suitable for use in dentistry.
  
  
  METHODS
  Using an experimental set-up consisting of an X-ray source, a turntable and a charge-coupled device (CCD) detector connected to a PC, CT scans were made of a single molar and a dry mandible. Slices were reconstructed using filtered backprojection. An experimental comparison was made between a full CT geometry and a local CT geometry.
  
  
  RESULTS
  Horizontal and vertical slices through the mandible were obtained showing the internal structure of a molar and the surrounding bone. The slices show good contrast and details. A computer experiment gave visual evidence that slices obtained by local CT are not substantially different from slices obtained from a full CT set-up with respect to resolution.
  
  
  CONCLUSIONS
  Based on the results obtained so far, local CT of dental structures appears to be a promising diagnostic instrument.
authors.affiliation: Department of Oral Radiology, Academic Centre for Dentistry Amsterdam (ACTA), Louwesweg 1, Amsterdam, The Netherlands. a.v.daatselaar@acta.nl
authors.forename: A N
authors.initials: AN
authors.lastname: van Daatselaar
authors.forename: S M
authors.initials: SM
authors.lastname: Dunn
authors.forename: H J W
authors.initials: HJ
authors.lastname: Spoelder
authors.forename: D M
authors.initials: DM
authors.lastname: Germans
authors.forename: L
authors.initials: L
authors.lastname: Renambot
authors.forename: H E
authors.initials: HE
authors.lastname: Bal
authors.forename: P F
authors.initials: PF
authors.lastname: van der Stelt
mesh_terms: D005240:Feasibility Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008334:Mandible / Q000000981:diagnostic imaging*; D008838:Microcomputers; D008963:Molar / Q000000981:diagnostic imaging*; D019252:Radiography, Dental, Digital / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*