Correlation analysis between radiation exposure and the image quality of cone-beam computed tomography in the dental clinical environment
- Author:
Chang-Ho SONG
1
;
Han-Gyeol YEOM
;
Jo-Eun KIM
;
Kyung-Hoe HUH
;
Won-Jin YI
;
Min-Suk HEO
;
Sam-Sun LEE
Author Information
- Publication Type:Original Articles
- From:Imaging Science in Dentistry 2022;52(3):283-288
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:This study was conducted to measure the radiation exposure and image quality of various cone-beam computed tomography (CBCT) machines under common clinical conditions and to analyze the correlation between them.
Materials and Methods:Seven CBCT machines used frequently in clinical practice were selected. Because each machine has various sizes of fields of view (FOVs), 1 large FOV and 1 small FOV were selected for each machine. Radiation exposure was measured using a dose-area product (DAP) meter. The quality of the CBCT images was analyzed using 8 image quality parameters obtained using a dental volume tomography phantom. For statistical analysis, regression analysis using a generalized linear model was used.
Results:Polymethyl-methacrylate (PMMA) noise and modulation transfer function (MTF) 10% showed statistically significant correlations with DAP values, presenting positive and negative correlations, respectively (P<0.05). Image quality parameters other than PMMA noise and MTF 10% did not demonstrate statistically significant correlationswith DAP values.
Conclusion:As radiation exposure and image quality are not proportionally related in clinically used equipment, it is necessary to evaluate and monitor radiation exposure and image quality separately.
