The role of 256-slice computed tomography for evaluation vascular anatomy in the assessment of the extracellular in the living donor

Abstract

Objective: To determine the accuracy of 256-slice computed tomographic angiographyin the evaluation of renal arterial and venous structures of living donor kidney system and its anatomical variations in living kidney donors, and the correlation of CTRA findings with those observed during kidney harvesting

Materials and Methods: 202 potential living donor candidates were included to this study, who had CTA for the assessment of their renal vessels in our hospital between January 2021 and June 2022. The number, course, and drainage patterns of the renal vessel were retrospectively observed from the scans. Anomalies of renal arteries, veins and inferior vena cava (IVC) were recorded. Multiplanar reformations (MPRs), maximum intensity projections, and volume rendering were used for analysis. The results obtained were correlated surgically.

Results: Two-hundred and two patients who had undergone laparoscopic nephrectomy as living donors were included: 109 female and 93 male donors Mean age of donors was 33.19± 7.09 years. Bilateral renal arteries mostly originate at the level of the L1 vertebral body and the L1/2 disc. Mean diameter of right renal artery was 5.94 ± 0.94mm and left renal artery was 5.90±0.94mm. The mean length of the right renal artery was 33.9 ± 13.5 mm and left renal artery was 27.8 ± 10.1 mm. The distribution of accessory renal artery was 15.3% on right side and 19.8% on left side. 8.9% has multiple renal veins, more common in the right side. Sn, Sp, NPV, PPV compare open oparative nephrectomy 93.75-100%.

Conclusion: 256-slice computed tomographic is an accurate, safe and noninvasive diagnostic tool for determination of renal artery and vein abnormalities in living kidney donors preooparative. It helps with surgery planning, choosing operation side and exclusion of donors