Scatter filtration method in digital radiography:The imaging quality and irradiation dose evaluation for scatter filtering template performance / 中华放射医学与防护杂志

ABSTRACT

Objective The imaging quality and irradiation dose were compared between scatter filtering template performance and conventional grid in digital radiography.MethodsImages of contrast-detail phantom and ROC statistic phantom corrected with scatter filtering template method and grid were obtained,respectively.The image quality factors(IQF)and sihnal detection probability values(Pdet)and imaging dose were analyzed by ANOVA,SNK and t test statistics for the two methods of scatter removing.ResultsThe difference of IQF and signal detection probability of images corrected by scatter filtering template technique and conventional snd Was statistically significant.ConclusionsIn digital radiography,STFF can effectively filter scattering,improve image quality without increasing the exposure.With the same image quality.it can reduce the entrance surface dose by about 30% than filter grid.In order to effectively filter scattering,improve the quality of X-ray image,and reduce the patient dose.STFF is an alternative method.