摘要：
The age of 18 is an important criterion in judicial trial, immigrant and competitive sports. Consequentially, the estimation of age 18 is a key issue in forensic practice and research. The extremitas sternalis claviculae, iliac crest, third molar, and the proximal limb of the limb bone were usually used as indictors of age 18. The results of the previous studies demonstrated that those indictors could be beneficial to the estimation of age 18. The X-ray, CT, ultrasound and MRI of different indictors were widely utilized for the estimation of age 18, particularly the thin-layer CT. But due to the non-radiation, MRI will be a trend for forensic age estimation in the future. Whilst in the previous studies, the descriptive analysis was applied for the estimation of age 18, but due to the low statistic efficiency, it is unsuitable for forensic age estimation, and the future studies should pay attention to the high efficiency statistical methods, for instance, the ROC curve or the data mining.%18周岁年龄节点在司法审判、移民、竞技体育中均有重大意义,18岁年龄推断是法医实践工作的难点之一,也是法医基础研究应面对的问题.目前常用的指标包括锁骨胸骨端、髂嵴、第三磨牙、四肢骨近关节端.18岁年龄推断的常用影像方法多样,包括平片、CT、超声、MRI,薄层CT是目前主要研究手段,但逐渐向无辐射的MRI发展.统计方法多采用一般描述性分析,但其统计效能低,因此逐渐有作者提出应用ROC、数据挖掘技术等高功效的统计方法推断年龄.既往研究显示上述指标的完全发育成熟在18岁年龄推断中有一定意义,可用于18岁年龄推断,多指标的联合应用及高功效的统计方法将会提高18岁年龄推断的准确性.
