Sarcopenia, defined as loss of skeletal muscle mass, is a novel term associated with adverse outcomes in children. Magnetic Resonance Imaging (MRI) is a safe and precise technique for measuring tissue compartments and is commonly used in most routine paediatric imaging protocols. Currently, there is a lack of MRI-derived normative data which can help in determining the level of sarcopenia. This study aimed to introduce reference values of total psoas muscle area (tPMA), total paraspinal muscle area (tPSMA), and total macroscopic fat infiltrations of the PSMA (tMFI).

中文翻译：

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MRI 衍生的腰大肌和椎旁肌以及儿童椎旁肌肉眼可见脂肪浸润的参考值

肌肉减少症，定义为骨骼肌质量的损失，是一个与儿童不良后果相关的新术语。磁共振成像 (MRI) 是一种用于测量组织隔室的安全且精确的技术，通常用于大多数常规儿科成像方案。目前，缺乏可帮助确定肌肉减少症水平的 MRI 衍生的规范数据。本研究旨在介绍总腰大肌面积 (tPMA)、总椎旁肌面积 (tPSMA) 和总宏观脂肪浸润 PSMA (tMFI) 的参考值。