Cohen Emil I, Kelly Sarah A, Edye Michael, Mitty Harold A, Bromberg Jonathan S
Mount Sinai Medical Center, Department of Radiology, Box 1234, 1 Gustave L Levy Place, New York, NY 10029, United States.
Eur J Radiol. 2009 Aug;71(2):283-7. doi: 10.1016/j.ejrad.2008.03.006. Epub 2008 Apr 23.
The purpose of this study was to correlate total renal volume (TRV) calculations, obtained through the voxel-count method and ellipsoid formula with various physical characteristics.
MRI reports and physical examination from 210 healthy kidney donors (420 kidneys), on whom renal volumes were obtained using the voxel-count method, were retrospectively reviewed. These values along with ones obtained through a more traditional method (ellipsoid formula) were correlated with subject height, body weight, body mass index (BMI), and age.
TRV correlated strongly with body weight (r=0.7) and to a lesser degree with height, age, or BMI (r=0.5, -0.2, 0.3, respectively). The left kidney volume was greater than the right, on average (p<0.001). The ellipsoid formula method over-estimated renal volume by 17% on average which was significant (p<0.001).
Body weight was the physical characteristic which demonstrated the strongest correlation with renal volume in healthy subjects. Given this finding, a formula was derived for estimating the TRV for a given patient based on the his or her weight: TRV = 2.96 x weight (kg) + 113+/-64.
本研究旨在将通过体素计数法和椭球体公式获得的总肾体积（TRV）计算结果与各种身体特征进行关联。
回顾性分析了210名健康肾供体（420个肾脏）的MRI报告和体格检查结果，这些供体的肾体积通过体素计数法获得。将这些值与通过更传统方法（椭球体公式）获得的值与受试者的身高、体重、体重指数（BMI）和年龄进行关联。
TRV与体重密切相关（r = 0.7），与身高、年龄或BMI的相关性较小（分别为r = 0.5、-0.2、0.3）。平均而言，左肾体积大于右肾（p < 0.001）。椭球体公式法平均高估肾体积17%，差异具有统计学意义（p < 0.001）。
体重是健康受试者中与肾体积相关性最强的身体特征。基于这一发现，得出了一个根据患者体重估算其TRV的公式：TRV = 2.96×体重（kg）+ 113±64。
