Measurement of kidney volume with multi-detector computed tomography scanning in young Korean.
OBJECTIVE
Kidney 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).


METHODS
We 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.


RESULTS
The 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).


CONCLUSIONS
The kidney volume measured with MDCT is correlated well with body parameters, and is useful to predict renal function.
Shin
Ho Sik
HS
Department of Internal Medicine, The Armed Forces Yang-Ju Hospital, Yangju, Korea.
Chung
Byung Ha
BH
Lee
Sang Eun
SE
Kim
Woo Jin
WJ
Ha
Hong Il
HI
Yang
Chul Woo
CW
D000328:Adult; D044466:Asian People; D005919:Glomerular Filtration Rate; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D008297:Male; D009929:Organ Size; D011859:Radiography; D055815:Young Adult