title: [Comparison of a dental cone beam CT with a multi-detector row CT on effective doses and physical image quality].
abstract: The purpose of this study was to compare a dental cone beam computed tomography (dental CBCT) and a multi-detector row CT (MDCT) using effective doses and physical image quality. A dental mode (D-mode) and an implant mode (I-mode) were employed for calculating effective doses. Field of view (FOV) size of the MDCT was 150 mm. Three types of images were obtained using 3 different reconstruction functions: FC1 (for abdomen images), FC30 (for internal ear and bone images) and FC81 (for high resolution images). Effective doses obtained with the D-mode and with the I-mode were about 20% and 50% of those obtained with the MDCT, respectively. Resolution properties obtained with the D-mode and I-mode were superior to that of the MDCT in a high frequency range. Noise properties of the D-mode and the I-mode were better than those with FC81. It was found that the dental CBCT has better potential as compared with MDCT in both dental and implant modes.
authors.affiliation: Department of Medical Technology, Kyushu University Hospital.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Kenji
authors.initials: K
authors.lastname: Tokumori
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Okamura
authors.forename: Kazunori
authors.initials: K
authors.lastname: Yoshiura
mesh_terms: D054893:Cone-Beam Computed Tomography / Q000295:instrumentation / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011861:Radiography, Dental / Q000295:instrumentation / Q000379:methods*; D036542:Tomography, Spiral Computed / Q000295:instrumentation / Q000379:methods