1. [Comparison of a dental cone beam CT with a multi-detector row CT on effective doses and physical image quality].
- Author
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Yoshida Y, Tokumori K, Okamura K, and Yoshiura K
- Subjects
- Phantoms, Imaging, Radiography, Dental instrumentation, Cone-Beam Computed Tomography instrumentation, Cone-Beam Computed Tomography methods, Image Processing, Computer-Assisted methods, Radiation Dosage, Radiography, Dental methods, Tomography, Spiral Computed instrumentation, Tomography, Spiral Computed methods
- 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.
- Published
- 2011
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