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标准化摄入值的临床实用性规范化为瘦体质量用身体成分分析仪测量

Tetsu Nakaichi¹, Kazuaki Funamoto², Shozo Yamashita²

¹Division of Radiation Safety and Quality Assurance, National Cancer Center Hospital, Tokyo, JPN.

|July 1, 2025

概括

使用预测方程计算的标准化吸收值正常化为瘦体质量 (SUL) 可能不准确. 一种基于身体成分分析仪 (BCA) 的方法显示了与Janmahasatian可比的结果.

科学领域:

核医学是一种核医学.
放射性药理学是一种放射性药理学.
医疗成像医学成像

背景情况:

标准化吸收值正常化为瘦体质量 (SUL) 对于定量PET成像至关重要.
瘦体质量 (LBM) 的预测方程在不同人群中可能缺乏准确性.
准确的LBM估计对于在临床环境中可靠的SUL计算至关重要.

研究的目的:

在日本人口中,将从预测方程中获得的SUL值与基于身体成分分析仪 (BCA) 的方法进行比较.
评估不同SUL计算方法的临床实用性和准确性.
评估SUL估计中的性别特异差异.

主要方法:

在85名日本受试者身上进行了PET成像.
使用两个预测方程 (Pieterman,Janmahasatian) 和基于BCA的方法计算SUL.
用皮尔森相关性,布兰德-阿尔特曼分析和类内相关系数 (ICC) 来进行比较.

主要成果:

在体重和SUV和SUL之间发现了显著的正相关性.
在整个队列中,Janmahasatian的基于方程的SUL与基于BCA的SUL相似.
基于BCA的SUL在性别亚组分析中显示出显著差异,在女性中表现不太可靠.

结论:

基于BCA的方法是日本人口中SUL计算的可行替代方案,特别是在使用Janmahasatian方程时.
在LBM和SUL估计中的性别特异性差异是显著的,必须在临床PET研究中考虑.
对SUL计算方法的特定人群验证对于准确的定量PET成像是至关重要的.

关键词:

18f-氧葡萄糖正子发射断层扫描 (18f-fdg pet)身体组成分析仪瘦体质量瘦体质量瘦体质量标准化吸收值 (suv) 是指标准化的吸收值.南南南南南南南南南南南南

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