J Korean Med Sci.  2017 Mar;32(3):448-456. 10.3346/jkms.2017.32.3.448.

Measurement and Estimation of Renal Size by Computed Tomography in Korean Children

• Park CW
• Yu N
• Yun SW
• Chae SA
• Lee NM
• Yi DY
• Choi YB
• Lim IS

• KMID: 2366641
• DOI: http://doi.org/10.3346/jkms.2017.32.3.448

Abstract

Adequate organ growth is an important aspect of growth evaluation in children. Renal size is an important indicator of adequate renal growth; computed tomography (CT) can closely estimate actual kidney size. However, insufficient data are available on normal renal size as measured by CT. This study aimed to evaluate the relationships of anthropometric indices with renal length and volume measured by CT in Korean pediatric patients. Renal length and volume were measured using CT images in 272 pediatric patients (age < 18 years) without renal disease. Data for anthropometric indices"”including height, weight, and body surface area (BSA)"”were obtained using medical records. Using the equation for an ellipsoid, renal volume was calculated in cubic centimeters. Height showed greatest correlation with renal length on stepwise multiple linear regression analysis; BSA showed the strongest significant correlation with renal volume. The mean renal size for each age group and height group was determined; it showed a tendency to increase with age and height. This is the first Korean study to report the relationship between body indices and renal size measured by CT. These results can serve as normative standards for assessing adequate renal growth.

Keyword

Computed Tomography; Kidney; Measurement; Regression Analysis

MeSH Terms

Body Surface Area
Child*
Humans
Kidney
Linear Models
Medical Records
Regression Analysis

Figure

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  Fig. 1 Renal growth curve according to age, height, and BSA. (A–D) Age shows a positive relationship with renal size. The renal size in children, during the first 13 years of life, reaches 90% of the size in adults. (E–H) Height and BSA correlate well with renal size. BSA = body surface area.

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