针对医学影像设备学课程中X线机的讲解存在实验教学与理论教学较难结合的问题,医学影像学和医学影像技术专业学生在步入工作岗位之前对X线机的操作流程不熟悉的现状,文章设计一种基于电源电压检测的X线机示教实验装置.利用该实验装置开展实验教学,可以在避免高电压和X线的电离辐射给师生带来的潜在安全隐患的前提下实现以下教学目的:(1)该实验装置模拟常规X线机摄影或透视操作流程;(2)为得到合适黑化程度的X线光片,保证电源电压波动值超过±10%时不能曝光.%The conjunction between theory teaching and experiment teaching is very difficult,and the students of medical imaging and medical imaging technology specialty are not familiar with the operation flow of X-ray machine before they started work. Herein we designed an X-ray machine teaching experimental devices based on power voltage detection,aiming to improve the above-mentioned situation in the medical imaging equipment course.The designed device can achieve the following objectives in condition of low cost,high safety performance and non ionizing radiation characteristics:(1)providing solid foundation for students to familiar with the work such as X-ray machine maintenance or X-ray machine operation;(2)obtaining suitable X-ray photograph by making sure that X-ray machine will not be exposed when the power supply voltage over ±10%.
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