摘要
目的:研制适于口腔全景X线机密度分辨力检测模体,提高其质量控制水平。方法:参照标准X线机密度分辨力平面检测模体原理,将口腔全景X线机密度分辨力检测模体分别设计成"U"形及标准圆弧形模体两种样式。结果:"U"形检测模体能较好匹配口腔颌面的形状,但易产生射线重叠;标准圆弧形检测模体具有较好的均匀性和一致性,可以避免产生射线重叠现象。结论:两种样式的检测模体均可以检测口腔全景X线机密度分辨力,而标准圆弧形检测模体具有较好的均匀性和一致性。
Objective： Developing the density resolution detection phantom design method of oral panoramic X-ray machine, to raise the level of its quality control. Methods： redesign the density detection phantom of standard X-ray machine to ＂U＂ shape and the circular mold shape. Results： ＂U＂ detection phantom has good physical match oral cavity jaw surface shape, but easy to produce ghosting and an estimate of error; circular mold detection phantom has good uniformity and consistency, and won＇t produce image overlap phenomenon. Conclusion： the circular mold detection phantom is more suitable for density resolution of oral panoramic X-ray machine detection.
出处
《中国医学装备》
2014年第3期20-22,共3页
China Medical Equipment
基金
军事医学计量科研专项课题(2011-JL-015)"口腔X线全景摄影设备计量检定系统研制与规程制订研究"
