The effect of X-ray radiography exposure intensity on image quality of the monitor
- VernacularTitle:X线曝光量对显示器影像质量的影响
- Author:
Yunxi CAO
;
Huiqin HU
;
Jianfeng QIU
;
Lemin HE
;
Fengtan HAN
;
Xuean JING
- Publication Type:Journal Article
- Keywords:
Radiography;
Computer terminals;
Radiology information
- From:
Chinese Journal of Radiology
2008;42(10):1056-1058
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the relationship between image quality and different exposure intensity of digital radiography(DR).Methods Using a contrast-detail phantom Cdrad 2.0,observers evaluated images on the monitots when exposure parameters were 90 kV and mAs ranged from 0.5 to 16.0 mAs.Then calculate image quality figure(IQF),and ANOVA was used to analyze the difference of IQF under different radiation dose in 8 subjects.Results (1)When exposure parameters were 90 kV and mAs altered from 0.5 to 8.0 mAs.the IQF observed on the monitor was reduced,and the minimal value was 38.54±2.82.When mAs changing from 8.0 to 16.0 mAs.IQF observed on the monitor was increased,and the maximum was 44.33±2.35.(2)Under the different exposure condition,the difference of IQF values were statistically significant(F=60.35,P＜0.01).Conclusions With the increased exposure intensity,the image quality on monitor increased.When mAs was 8.0 mAs,image quality was the optimum When mAs was more than 8.0 mAs,the image quality on monitor reduced.
