Bush A, Denison D M
Thorax. 1986 Feb;41(2):158-9. doi: 10.1136/thx.41.2.158.
In previous papers from this laboratory, Pierce et al described a method of measuring lung volumes from routine chest radiographs. The images on the film are magnified, and this was taken into account in their calculations. Their findings have recently been confirmed by Rodenstein et al. It is important to measure magnification accurately because errors in linear dimensions are cubed when volume is calculated. This paper describes two simple methods of improving the accuracy of the calculation of magnification.
在本实验室之前发表的论文中，皮尔斯等人描述了一种从常规胸部X光片测量肺容积的方法。胶片上的图像被放大了，并且在他们的计算中考虑到了这一点。他们的研究结果最近得到了罗登斯坦等人的证实。准确测量放大倍数很重要，因为在计算体积时，线性尺寸的误差会被立方。本文描述了两种提高放大倍数计算准确性的简单方法。
