A study on the influence of CRT brightness for image reading
- VernacularTitle:显示器亮度对诊断质量的影响
- Author:
Xianyun WANG
;
Yong SUN
;
Huiqin LIU
;
Jianfeng QIU
;
Xingjun SONG
;
- Publication Type:Journal Article
- Keywords:
Luminescence;
Quality control;
Computer terminals;
Data display
- From:
Chinese Journal of Radiology
1994;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the influence of CRT brightness on image reading. Methods Both physical testing and compared viewing were used in the study. (1) Setting the CRT brightness at high and low grade (the blank brightness of CRT was 112 cd/m 2 and 82 cd/m 2, respectively). (2) 21 films with the density ranging from 0.27 to 2.71 were digitized by a scanner and displayed on the CRT. The brightness of CRT that varied with film density was measured by a bright meter, then the relation chart between CRT brightness and the film density was drawn. (3) Thirteen films on which there were many small and low contrast signals were viewed on CRT by three doctors. The tested data were calculated by statistics (? 2 test, the difference was significantly marked when P 0.05), but the signals viewed in the lung were 87 and 29, and the difference was significantly marked (? 2=53.73, P
