Analysis of the comparison results of dental CBCT phantoms in radiological health technical service institutions in Guangdong Province, China
10.13491/j.issn.1004-714X.2025.02.013
- VernacularTitle:广东省放射卫生技术服务机构口腔CBCT模体比对结果分析
- Author:
Xuan LONG
1
,
2
;
Hongwei YU
2
;
Zhan TAN
2
;
Lei CAO
2
;
Weixu HUANG
2
;
Huifeng CHEN
2
;
Aihua LIN
3
Author Information
1. School of Public Health, Sun Yat - sen University, Guangzhou 510006 China
2. Guangdong Province Hospital forOccupational Disease Prevention and Treatment, Guangzhou 510300 China.
3. School of Public Health, Sun Yat - sen University, Guangzhou 510006 China.
- Publication Type:OriginalArticles
- Keywords:
Dental cone beam computed tomography;
Testing phantom;
Quality control testing;
Comparison
- From:
Chinese Journal of Radiological Health
2025;34(2):219-224
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the situation of dental cone beam computed tomography (CBCT) quality control testing phantoms in radiation health technical service institutions in Guangdong province, analyze the differences among different phantoms, and provide a reference for dental CBCT quality control testing. Methods The testing phantoms of 49 radiation health technical service institutions were used as the research objects. The designated CBCT equipment was used for scanning and imaging. The Z-score method was used to evaluate the high-contrast resolution, low-contrast resolution, and distance measurement deviation of each phantom. Results The satisfaction rates of various items for the phantoms in 49 institutions ranged from 85.7% to 100%. The distance measurement deviations of four institutions were “suspicious”, and the high-contrast resolution of four institutions and the distance measurement deviation of one institution were “unsatisfactory”. Conclusion The overall performance of dental CBCT quality control testing phantoms in radiological health technical service institutions in Guangdong province is satisfactory. However, there are still some phantoms with poor results in items such as distance measurement deviation and high-contrast resolution. The structural design, material selection, and manufacturing process of the phantom may all affect the results of quality control testing. Therefore, appropriate phantoms, optimized exposure conditions, and suitable reconstruction algorithms should be used in CBCT quality control testing to ensure accurate and reliable measurements.
