Bone Density Measurements: Multi-Slice Computed Tomography versus Cone-Beam Computed Tomography
이미영, 박재현, 장나영, 서혜영, 채종문,
소속 상세정보
이미영 ( Lee Mi-Young ) - Seoul National University Gwanak Dental Hospital Department of Orthodontics
박재현 ( Park Jae-Hyun ) - A.T. Still University Arizona School of Dentistry & Oral Health Postgraduate Orthodontic Program
장나영 ( Chang Na-Young ) - Wonkwang University School of Dentistry Department of Orthodontics
서혜영 ( Seo Hye-Young ) - Wonkwang University College of Natural Sciences School of Big Data and Financial Statistics
채종문 ( Chae Jong-Moon ) - Wonkwang University School of Dentistry Department of Orthodontics
Abstract
Introduction: The purpose of this study was to compare and evaluate the bone density values obtained by using multislice computed tomography (MSCT) vs. cone-beam computed tomography (CBCT).
Methods: A dry mandible was scanned with MSCT (Hounsfield unit; HU) and 3 types of CBCTs (voxel value; VV). Bone densities (gray scales) in the scanned images were measured and compared using 3-dimensional software programs. The cortical, cancellous and total bone densities of the alveolar bone between the mandibular second premolar and first molar were measured on an axial slice at the height of 3, 6, and 9 mm apically from the alveolar crest.
Results: There was no statistical difference in bone density between the right and left sides. The cortical bone density measurements were significantly different with MSCT vs. CBCT (P<0.05), but there were no significant differences in cancellous and total bone density measurements with MSCT vs. CBCT (P>0.05). The bone density values showed linear relationships in the MSCT and CBCT images.
Conclusions: Bone density values were different but showed linear relationships in MSCT and CBCT images. Therefore, CBCT could be a valuable tool for evaluating bone density on a relative basis.
키워드
Bone density; CBCT; MSCT; Hounsfield unit; Voxel value
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