Department of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium.
Department of Geriatrics, Neurosciences and Orthopedics, Catholic University of the Sacred Heart Rome, Milan, Italy.
J Cachexia Sarcopenia Muscle. 2018 Dec;9(7):1272-1274. doi: 10.1002/jcsm.12387.
However, semantics aside, we think that DXA can indeed serve as a reference standard for measuring muscle mass. Obviously, CT and MRI are advanced techniques that can and have been used to obtain important information such as muscle size/volume and more recently amount and distribution of intra- and intermuscular adipose tissue. Also individual muscles can be assessed separately. However, with respect to muscle mass, the comparison of DXA with CT/MRI is rather difficult because DXA and QCT/MRI measure different physical parameters.
然而,抛开语义不谈,我们认为 DXA 确实可以作为衡量肌肉量的参考标准。显然,CT 和 MRI 是先进的技术,可以而且已经被用于获取肌肉大小/体积等重要信息,最近还可以获取肌肉内和肌肉间脂肪组织的含量和分布情况。此外,还可以分别评估各个肌肉。然而,就肌肉量而言,DXA 与 CT/MRI 的比较相当困难,因为 DXA 和 QCT/MRI 测量的是不同的物理参数。