Evaluation of the Frequency of CBCT Artifacts

• Published in: International dental journal 2024-10, Vol.74, p.S4-S4
• Main Authors: Sargın, Elif Sena, Yildirim, Derya, Navruz, Esra Seden, Taşkın, Hasibe
• Format: Article
• Language: English
• ISSN: 0020-6539
• DOI: 10.1016/j.identj.2024.07.581

Artifacts, arising from device errors, clinical mishandling or patient factors degrade Cone Beam Computed Tomography (CBCT) image quality. This study aims to evaluate the artifacts observed in CBCT images according to different age groups, genders, and three different field of views (FOV). In this retrospective study, CBCT images (Planmeca ProMax® 3D Mid) obtained from 202 patients aged between 8 and 84 years (97 females, 105 males) were examined for the presence of scanning-related artifacts, acquisition artifacts and patient related artifacts which are determined by the consensus of three observers. Three FOVs were studied: 200x170 mm, 200x100 mm and 40x50 mm. Data were analyzed via the SPSS 29.0.0.0 statistical software, using descriptive statistics and the chi-square test. Most frequently observed artifacts for each FOV were 200 x 170 mm: aliasing, 200 x 100 mm: aliasing, 40 x 50 mm: streaks and dark bands, respectively, no ring artifacts appeared in any FOV. Motion artifacts were present in 48.5% within the largest FOV, with age being a significant factor, those under 18 and over 65 had higher incidences (p= 0.011); gender did not show any significant difference (p=0.747). Noise artifacts were more frequently observed in the 40x50 mm FOV (33.8%). Device calibration is required to avoid ring artifacts. As the FOV expands, frequency of cupping, streaks and dark bands, motion artifacts also increases. To eliminate motion artifacts, particularly in children and elderly, strategies such as employing head restraints, capturing images while patients are seated or lying down and preferring smaller FOVs are recommended.