Correlative analysis of technical parameters of CT system and the quality of CT film
- VernacularTitle:CT机技术参数与CT片质量的相关性分析
- Author:
Kuncheng LI
;
Liang WANG
;
Xiaofeng WANG
- Publication Type:Journal Article
- Keywords:
Tomography,X-ray computed;
Evaluation studies;
Quality control;
Factor analysis,statistical
- From:
Chinese Journal of Radiology
2001;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To primarily explore the relationship between technical parameters of CT scanner and the quality of CT film.Methods Thirteen sets of CT system were tested and seven technical parameters of each CT scanner were collected,then the CT films from the tested CT system were collected and the quality of CT films were quantitatively analyzed according to "the clinical evaluative standard of CT film" by our study group.The multi-variable linear regression analysis of technical parameters of the CT scanner and the remarks of the quality of CT film was performed.Results There was linear regression relationship between the physical parameters (including CT dose index,mean CT value of water,noise,uniformity,high contrast resolution,low contrast resolution,and the linear CT value) and the score of CT film.However,among them,only low contrast resolution had statistical significant influence on the score of CT films (t= -2.460,P=0.049).Conclusion Low contrast resolution has significant influence on the quality of CT film and further study of the relationship between other physical parameters and the quality of CT film will be needed.
