Purpose: The aim of the current study is to compare the split renal volume obtained from 3DCT with split renal function obtained from scintigraphy.
Material and Methods: We conducted a prospective analysis of 240 renal donors in whom CT and renal scintigraphy were done during November 2013 to July 2019. Renal volume was calculated using Siemens syngo volumetry software. Pearson’s correlation coefficient was used to determine the correlation between quantitative data sets.
Results: 240 donors (110 men, 130 women; mean age, 45 years) were evaluated. The mean body weight and surface area were 58.3 ± 9.4 kgs and 1.58 ± 0.14 m2 respectively. The mean total renal volume was 214.7 ± 39 cm3 and mean split renal volume was 48.86 ± 2.76 and 51.23 ± 2.88 on right and left side respectively. No significant correlation was found between uncorrected split renal volume and split renal function. Significant correlation was found between renal volume and function when both were corrected to body surface area (p value < 0.0001).
Conclusions: Renal volume calculation can be done on CT data set already acquired for assessment of renal vascular anatomy. Our study highlights the correlation of CT renal volume with estimated renal function on scintigraphy. The simple volumetric method with 3DCT has the potential to replace renal scintigraphy for the assessment of split renal function as a preoperative imaging examination for living-donor transplantation.