Comparative study of CT measurement of adult kidney depth with estimation formula
10.3969/j.issn.1673-9701.2024.29.008
- VernacularTitle:CT测量成人肾脏深度与估算公式的对比研究
- Author:
Liu FENG
1
;
Xiaojie LIU
;
Zhigang ZHANG
;
Hongzhi WANG
Author Information
1. 嘉兴市第一医院核医学科,浙江嘉兴 314000
- Keywords:
Renal depth;
Calculation formula;
Renal dynamic imaging;
Glomerular filtration rate
- From:
China Modern Doctor
2024;62(29):33-36
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the correlation and consistency between different kidney depth estimation formulas and computed tomography(CT)measurement of kidney depth,discussing the best kidney depth calculation formula for this region.Methods A total of 213 patients who underwent renal dynamic imaging in the First Hospital of Jiaxing from January 2019 to January 2024 were retrospectively included in this study.The abdominal CT image data of the same period were obtained,and the gender,age,height and weight were recorded.The patient's body thickness and kidney depth were measured by CT.Seven calculation formulas(Tonnesen formula,Li Qian formula,Taylor formula,Inoue formula,Xue JJ formula,Li's equation and Ma G's formula)were used to estimate the kidney depth.Paired sample t-test,Pearson correlation analysis and Bland-Altman consistency analysis were performed between the kidney depth calculated by the equation and the kidney depth measured by CT.Results There was a correlation between the estimated values calculated by the calculation formulas and actual CT measurements,and the kidney depth calculated by the seven formulas were lower than the CT measurements.The results of correlation analysis showed that the correlation coefficient between Ma G's formula and CT measurements was better than other formulas,and the correlation coefficients of Tonnesen formula and Inoue formula were consistent.The bias between the kidney depth calculated by Tonnesen formula and the CT measured value is the largest,and the bias between the kidney depth calculated by Ma G's formula and the CT measured value is the smallest.Conclusion The Ma G'S formula introduces body thickness as a key reference variable for calculating kidney depth.Compared to the other six calculation formulas,it has demonstrated higher accuracy and reliability in estimating kidney depth,thereby having a broader applicability in clinical practice.
