title: [Comparison of absorbed and effective dose from two dental cone beam computed tomography scanners].
abstract: OBJECTIVE
  This research compared the field of view with the tissue absorbed dose and effective doses using the two dental cone beam computed tomography (CBCT) scanners.
  
  
  METHODS
  Two CBCT devices, an Alphard VEGA and 3DX multi-image micro CT MCT-1, were used. Measurements were made using an Alderson RANDO phantom and thermoluminescence dosimeters (TLDs). The calculation of the effective dose was carried out according to ICRP Publication 60 and 103.
  
  
  RESULTS
  The effective doses for Alphard VEGA D mode, I mode, P mode, and C mode were 86, 238, 413, and 323 µSv, respectively. The effective doses using 3DX for the maxillary incisor, maxillary molar, mandibular incisor, mandibular molar, TMJ, and mandibular molar scout images were 27, 30, 48, 60, 14, and 1 µSv, respectively.
  
  
  CONCLUSIONS
  Both Alphard VEGA and 3DX values revealed salivary gland and oral mucosa doses much higher than those required for other tissues. It is necessary to select a small mode suitable in order to realize optimization.
authors.affiliation: Department of Oral and Maxillofacial Radiology, School of Dentistry, Aichi-Gakuin University.
authors.forename: Tsuneichi
authors.initials: T
authors.lastname: Okano
authors.forename: Ayae
authors.initials: A
authors.lastname: Matsuo
authors.forename: Kenichi
authors.initials: K
authors.lastname: Gotoh
authors.forename: Midori
authors.initials: M
authors.lastname: Yokoi
authors.forename: Akiko
authors.initials: A
authors.lastname: Hirukawa
authors.forename: Shinji
authors.initials: S
authors.lastname: Okumura
authors.forename: Shuji
authors.initials: S
authors.lastname: Koyama
mesh_terms: D054893:Cone-Beam Computed Tomography; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011861:Radiography, Dental; D013819:Thermoluminescent Dosimetry