一种基于呼吸门控技术的婴幼儿胸部X射线曝光控制系统的研究  

Research on an Infant & Children Chest X-ray Exposure Control System Based on Respiratory Gating Technique

作　　者：李建林[1] 刘美娟[2] 杜敦仁 谢海柱[1] 高伟[1] 董言治[4] 

机构地区：[1]青岛大学医学院附属烟台毓璜顶医院影像科,山东烟台264001 [2]青岛大学医学院附属烟台毓璜顶医院超声科,山东烟台264001 [3]烟台莱山区第一人民医院影像科,山东烟台264003 [4]烟台大学光电学院,山东烟台264005

出　　处：《中国医疗设备》2016年第7期98-101,共4页China Medical Devices

摘　　要：目的解决婴幼儿胸部X线摄影时呼吸配合问题。方法研究设计了一种基于呼吸门控装置的X射线机曝光时机显示控制装置,通过夹持式信号采集系统监测呼吸时腹部压力变化,选用以STC89C52单片机为处理核心的信号处理系统,实时显示腹部压力变化波形。随机选取100名于我院进行胸部X射线摄影的1~3周岁患儿,平均分为两组,一组采用传统曝光方式,另一组采用本文研究设计的呼吸门控辅助方式进行曝光。结果采用呼吸门控辅助方式进行曝光拍摄结果明显优于传统曝光方式,两组曝光结果间有显著差异（P〈0.001）。结论基于呼吸门控装置的X射线机曝光时机显示控制装置可以为胸部摄影提供更好的质量保证。Objective To solve the problem of respiratory coordination in chest radiography in infants and young children. Methods A new X-ray machine exposure time display control device was designed based on respiratory-gated devices, which monitored the changes in abdominal pressure during breathing by using the clamp signal acquisition system and used the STC89C52 single chip computer as the core of signal processing systems so as to real-timely display the abdominal pressure waveform. Altogether 100 infants with ages ranging from 1 to 3 years old were scanned by chest X-ray in the hospital, they were randomly selected and evenly divided into two groups with 50 infants in each group. One group was scanned by using the conventional method; another group was exposed by using the assistance of the respiratory-gated method designed this study. Results The exposure result by using the respiratory-gating assisted method was significantly better than that of the traditional method, with significant difference between the two groups（P〈0.001）. Conclusion The exposure time control device of X-ray machine which designed based on respiratory-gated display devices could provide better quality assurance for chest radiography.

关 键 词：呼吸门控技术 X射线曝光控制 胸部X线摄影 

分 类 号：R814[医药卫生—影像医学与核医学]