从经验化迈向标准化，中国儿童骨龄评价新体系发布

Core Viewpoint - The launch of the "China Children's Bone Age Evaluation New System" (China 25) marks a significant advancement in the precision and standardization of bone age assessment for children in China, addressing the limitations of traditional methods and adapting to contemporary growth patterns [1][2][3]. Group 1: Importance of Bone Age Evaluation - Bone age evaluation is crucial for assessing children's growth and development, providing essential references for clinical diagnosis, treatment, and research [1]. - The traditional bone age evaluation systems are inadequate due to rapid advancements in medical technology and increased public concern for children's growth [1][2]. Group 2: Development of the New System - The China 25 system was developed through collaboration among several institutions, including the Capital Medical University and the National Health Commission, utilizing a large dataset of 20,166 X-ray images from children aged 3-18 across 28 locations in China [2]. - The new system incorporates a dual-blind annotation process and a predictive data model tailored to the growth characteristics of contemporary Chinese children, highlighting the necessity of this new standard due to significant discrepancies with existing standards [3]. Group 3: Expected Impact - The introduction of the China 25 system is expected to transition bone age evaluation from an experience-based approach to a standardized one, benefiting the health of more children [3].