不同模式曲面体层摄影的辐射量及图像质量对比研究  

Dose and image quality comparison of different panoramic radiography programs

作　　者：方冬[1] 袁宪顺[1] 杨显存[1] 侯彦华 张临财 

机构地区：[1]山东大学附属省立医院,山东济南250021 [2]江苏省介入医疗器械研究重点实验室

出　　处：《中国预防医学杂志》2017年第1期15-19,共5页Chinese Preventive Medicine

基　　金：江苏省介入医疗器械研究重点实验室(淮阴工学院)重点资助项目(jr1503)

摘　　要：目的对比分析不同模式曲面体层摄影的辐射量及图像质量,指导临床进行最优化选择使用。方法回顾性分析2012年1月~2015年12月,山东大学附属省立医院因临床需要重复进行曲面体层摄影的患者60例,使用面积剂量乘积仪分别测量标准、儿童、正交模式曲面体层摄影的面积剂量乘积(67kV/8mA)。采用方差分析,LSD两两比较,对此三种模式曲面体层图像质量进行评价,包括整体图像质量以及颌骨、牙、牙周组织等解剖结构的图像质量。结果标准、儿童及正交模式曲面体层摄影的面积剂量乘积值分别为(57.91±5.32)mGy·cm^2、(48.64±7.21)mGy·cm^2及(50.73±5.70)mGy·cm^2,差异有统计学意义(F=5.779,P<0.05),其中标准和儿童模式的面积剂量乘积值差异有统计学意义(P=0.00),标准和正交模式的面积剂量乘积值差异有统计学意义(P=0.02),儿童和正交模式的面积剂量乘积值差异无统计学意义(P=0.49)。三种模式整体图像质量分值分别为(1.91±0.27)分、(1.91±0.32)分、(1.98±0.43)分,差异无统计学意义(F=0.21,P>0.05)。不同解剖结构的图像质量分值[(1.19±0.12)^(2.70±0.10)]分,差异无统计学意义(P>0.05)。结论儿童或正交模式曲面体层摄影的辐射量较标准模式降低,整体图像质量以及颌骨、牙、牙周组织等解剖结构的图像质量无差异,因此对于颌骨尺寸较小的成年受检者,可以使用儿童或正交模式取代标准模式,以实现辐射防护最优化原则。Objective To analyze the dose and image quality of different panoramic radiography programs. Methods The panoramic equipment is OP100D, three programs were taken, including standard, pediatric and orthogonal （67kV/SmA） . The dose area product was measured. One-way ANOVA and Fisher＇s exact tests were used to test the difference of them. Image quality of the total panoramic radiograph and 16 anatomical structures were assessed. One-way ANOVA were taken. Results The dose area products of the standard, pediatric andorthogonal program were （57.91±5.32） mGy cm2, （48.64±7.21） mGy cm2 and （50.73± 5.70） mGy cm2. There was significant difference between them （F=5. 779, P〈0.05） . The dose area prod- uct of the standard program was higher than the pediatric and orthogonal program （P〈. 05） . The dose area product of the pediatric program was equal to the orthogonal （P〉0.05） . The total panoramic radiograph im- age quality values of the standard, pediatric and orthogonal program were （1.91±0.27）, （1.91±0.32） and （1.98±0.43）, there was no significant difference between them （F=0.21, P〉0.05） . The image quality values of the 16 anatomical structures were （1.19±0.12） - （2.70±0.10）, there was no significant difference between them （P〉0.05）. Conclusions The study has shown that for the adult patients of small size jaws, the pediatric and orthogonal panoramic radiography can replace the standard program in theclinical procedures because the dose will be reduced and the image quality will not change. The principle of ALARA will be achieved.

关 键 词：曲面体层摄影术 面积剂量乘积 图像质量 

分 类 号：R144[医药卫生—公共卫生与预防医学]