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目的应用超声骨密度仪CM-200测定3~12个月儿童的超声骨密度现状，为预防儿童骨密度不足提供科学数据依据。方法收集2012年1月1日~12月31日在我院儿童保健门诊定期保健的3~12个月正常儿童3148人（男童1653人和女童1495人）为检测对象，测定受检者足跟部骨密度 SOS值，以 Z-SCORE值为评定标准。结果男女儿童组3~6个月Z值高于7~9个月组，7~9个月Z值高于10~12个月组。结论运用CM-200测定儿童SOS值，操作简便、测量时间短、安全、无创伤、无辐射，可客观评估儿童超声骨密度状况，为儿童骨密度不足的防治和健康指导提供依据。“,”Objective : application of ultrasound bone mineral density measurement of CM-200 3-12 months child ultrasonic bone density status, for the prevention of child bone density is insuf icient to provide scientific data. Methods: from January 1, 2012 to December 31, 2012 in our hospital outpatient care of children of regular health care 3-12 months of normal 3148 children (boys 1653 and girls 1495) for detecting an object, determining the subjects of heel bone density values of SOS, Z-SCORE values for the evaluation standard. Results:the children of both sexes in group 3~6 months Z value is higher than 7~9 month group, 7~9 month Z value is higher than 10~12 months group. Conclusion: using CM-200 determination of children SOS value, simple operation, short measuring time, safety, no trauma, no radiation, can be objectively assessed children ultrasonic bone density, bone mineral density for children lack of prevention and health guidance on.