Hirahata H
Sangyo Igaku. 1984 Jan;26(1):22-31.
There have been many studies of thermographic diagnosis of vibration disease, but few of them seem to have discussed tie-tamping machines as a cause. This study focuses on thermographic diagnosis of vibration disease in tie-tamper operators of the Japanese National Railways. In the diagnosis the subject's both hands were immersed in water at 10 degrees C for 3 minutes before being examined. Variables such as season, age, type of vibration tool used and total operating time were considered. These were selected as outside variables and thermographic results as dependent variables, in Quantification Method II. Season and confirmation of vibration disease were found to have a relationship to thermographic scaling, but no such relationship was found for age, type of vibration tool used, or total operating time. A cross-analysis of variables confirmed the relationship with season, and revealed that there were fewer confirmed cases of vibration disease in spring and summer than in fall and winter. It was finally concluded that thermographic analysis is more reliable in colder weather.
关于振动病的热像诊断已有许多研究，但其中似乎很少有将捣固机视为病因进行讨论的。本研究聚焦于日本国铁捣固机操作人员振动病的热像诊断。诊断时，受检者双手在10摄氏度的水中浸泡3分钟后再进行检查。研究考虑了季节、年龄、所使用振动工具的类型以及总操作时间等变量。在数量化理论II中，将这些选为外部变量，热像结果作为因变量。结果发现季节和振动病的确诊与热像分级有关，但年龄、所使用振动工具的类型或总操作时间与热像分级没有这种关系。对变量的交叉分析证实了与季节的关系，并显示春夏季节确诊的振动病病例比秋冬季节少。最终得出结论，在寒冷天气下热像分析更可靠。
