Comparative analysis of partial imaging performance parameters of home and imported X-ray machines
- VernacularTitle:国产和进口工频X线机部分成像性能参数的比较
- Author:
Yunxi CAO
;
Xianyun WANG
;
Huiqin LIU
;
Yongxin GUO
- Publication Type:Journal Article
- Keywords:
Product surveillance, Postmarketing;
Quality control;
Technology,radiologic;
Reference standards;
Comparative study
- From:
Chinese Journal of Radiology
2001;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare and analyze the performance indexes and the imaging quality of the home and imported X-ray machines through testing their partial imaging performance parameters. Methods By separate sampling from 10 home and 10 imported X-ray machines, the parameters including tube current, time of exposure, machine total exposure, and repeatability were tested, and the imaging performance was evaluated according to the national standard. Results All the performance indexes met the standard of GB4505-84. The first sampling tests showed the maximum changing coefficient of imaging performance repeatability of the home X-ray machines was ?max1=0.025,while that of the imported X-ray machine was ?max1=0.016. In the second sampling tests, the maximum changing coefficients of the two were ?max2=0.048 and ?max2=0.022, respectively. Conclusion The 2 years′ follow-up tests indicate that there is no significant difference between the above-mentioned parameters of the elaborately adjusted home X-ray machines and imported ones, but the home X-ray machines are no better than the imported X-ray machines in stability and consistency.
