• Ho Sik Shin, Byung Ha Chung, Sang Eun Lee, Woo Jin Kim, Hong Il Ha, and Chul Woo Yang.
• Department of Internal Medicine, The Armed Forces Yang-Ju Hospital, Yangju, Korea.
• Yonsei Med. J. 2009 Apr 30; 50 (2): 262265262-5.

PurposeKidney volume is regarded as the most precise indicator of kidney size. However, it is not widely used clinically, because its measurement is difficult due to the complex kidney shape. We attempted to evaluate the normal kidney volume in young Korean men by using multi-detector computed tomography (MDCT).Materials And MethodsWe retrospectively reviewed MDCT data of young Korean men (113 patients). After data processing, we measured the volume and length of the kidneys. Body parameters (height, body weight, body-surface area, and total body water) and laboratory data were collected. Glomerular filtration rate (GFR) was calculated using Cockcroft-Gault (CG) equation.ResultsThe mean kidney volume was 205.29 +/- 36.81 cm(3); and mean kidney length was 10.80 +/- 0.69 cm. The former correlated significantly with height, body weight, body-surface area, and total body water (p < 0.05, correlation coefficient : gamma = 0.328, 0.649, 0.640, and 0.638, respectively). The latter also correlated significantly with all body indexes, however the correlation was weaker, except with height (p < 0.05, correlation coefficient : gamma = 0.457, 0.473, 0.505, and 0.503, respectively). Only kidney volume significantly predicted estimated GFR (adjusted R(2) = 0.431, F = 85.90 and p < 0.05).ConclusionThe kidney volume measured with MDCT is correlated well with body parameters, and is useful to predict renal function.

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