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解析IEC 60601-1-3在加载状态下泄露辐射的测量要求和测量方法
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作者 马晓娟 《中国医疗器械信息》 2014年第6期37-40,共4页
本文先介绍了IEC 60601-1-3,Ed.2.0,12.4章对诊断X射线设备在加载状态下的泄漏辐射的测量要求和测量方法,然后针对该标准的12.4章的测试要求和测试方法中容易忽视或搞错,但又影响测量结果的要点进行了解析,最后通过一个例子归纳总结了IE... 本文先介绍了IEC 60601-1-3,Ed.2.0,12.4章对诊断X射线设备在加载状态下的泄漏辐射的测量要求和测量方法,然后针对该标准的12.4章的测试要求和测试方法中容易忽视或搞错,但又影响测量结果的要点进行了解析,最后通过一个例子归纳总结了IEC 60601-1-3对诊断X射线设备加载状态下的泄露辐射的测量方法,也指出了正确测量诊断X射线设备在加载状态下的泄露辐射的重要意义。 展开更多
关键词 X射线管 基准条件 加载因素 规定的每小时最大输入能量 泄露辐射 标称X射线管电压 空气比释动能
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Anterior cruciate ligament injuries in soccer:Loading mechanisms,risk factors,and prevention programs 被引量:2
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作者 Boyi Dai Dewei Mao +1 位作者 William E.Garrett Bing Yu 《Journal of Sport and Health Science》 SCIE 2014年第4期299-306,共8页
Anterior cruciate ligament (ACL) injuries are common in soccer. Understanding ACL loading mechanisms and risk factors for ACL injury is critical for designing effective prevention programs. The purpose of this revie... Anterior cruciate ligament (ACL) injuries are common in soccer. Understanding ACL loading mechanisms and risk factors for ACL injury is critical for designing effective prevention programs. The purpose of this review is to summarize the relevant literature on ACL loading mechanisms, ACL injury risk factors, and current ACL injury prevention programs for soccer players. Literature has shown that tibial anterior translation due to shear force at the proximal end of tibia is the primary ACL loading mechanism. No evidence has been found showing that knee valgus moment is the primary ACL loading mechanism. ACL loading mechanisms are largely ignored in previous studies on risk factors for ACL injury. Identified risk factors have little connections to ACL loading mechanisms. The results of studies on ACL injury prevention programs for soccer players are inconsistent. Current ACL injury prevention programs for soccer players are clinically ineffective due to low compliance. Future studies are urgently needed to identify risk factors for ACL injury in soccer that are connected to ACL loading mechanisms and have cause-and-effect relationships with injury rate, and to develop new prevention programs to improve compliance. 展开更多
关键词 ACL injuries BIOMECHANICS Injury prevention SOCCER
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