两种平板探测器成像系统在泌尿系造影中的对比研究

摘要

Objective:To compare the radiation dose and dynamic imaging quality between the amorphous selenium imaging system and amorphous silicon DR urography.Methods:The amorphous selenium imaging system and amorphous silicon DR urography were carried out each in 100 cases,and then the differences of the films showing rates and exposure conditions (mAs) in accordance with the evaluation criteria were compared and statistically analyzed.Results:The two groups in intravenous pyelography films showed no significant difference (P＞0.05),but in retrograde pyelography films the difference was statistically significant (P＜0.01).So in retrograde pyelography of the urinary tract,the dynamic images of the amorphous selenium imaging system were better in image observation than those in amorphous silicon DR.When amorphous selenium and amorphous silicon detectors worked under the same tube voltage conditions,the difference of radiation dose of the two groups of patients was statistically significant (P＜0.01),that is,the radiation dose of amorphous silicon DR was lower than that of amorphous selenium.Conclusion:In the urinary tract digital radiography,the amorphous silicon DR can reduce the radiation dose of patients,the dynamic amorphous selenium imaging system has some advantages in special imaging of the urinary tract.%目的:比较动态非晶硒成像系统和非晶硅数字X线摄影(DR)在泌尿系造影中的成像质量以及X线辐射剂量.方法:分别用动态非晶硒成像系统和非晶硅DR行泌尿系造影各100例,按照评价标准分析两组照片显示率及曝光条件(mAs)的差异并进行统计学分析.结果:两组静脉肾盂造影照片质量等级差异无统计学意义(P＞0.05),而在逆行造影照片中两组差异有统计学意义(P＜0.05),即在泌尿系逆行造影中动态非晶硒成像系统的图像观察效果优于非晶硅DR.非晶硒和非晶硅探测器在相同的管电压条件下,两组患者所受X线辐射剂量差异具有统计学意义(P＜0.05),非晶硅DR组患者所受X线剂量小于非晶硒组.结论:在泌尿系数字化X线摄影中,非晶硅DR可降低患者所受X线辐射剂量,动态非晶硒成像系统在泌尿系特殊造影中有一定优势.