Multi-slice spiral CT measurements of Chinese pediatric renal artery

Objective To obtain the range of the normal renal artery using spiral CT in different age children.Methods A total of 284 children without kidney disease and related disease were examined with enhanced CT,and were divided into 5 groups according to age.The branch number and origin of renal arteries and accessory renal arteries,the original situation of renal arteries,renal artery trunk angles with abdominal aorta,renal artery trunk inner diameters,the place where the accessory renal arteries come into the kidney were observed and measured on CT images,and then analyzed statistically.Results The most common type in renal arteries was single renal artery.The right renal artery above the left was the most common.The distance between renal artery trunk and abdominal aorta increased with age(P0.05).There was no significant difference among the groups in the renal artery trunk angles with abdominal aorta(P0.05).The renal artery trunk inner diameter increased with age(P0.001),but no significant difference was found between the genders and the two sides(P0.05).The incidence of accessory renal artery was 35.21%(100/284).Accessory renal arteries mainly originated from renal artery(66/134,49.25%) and abdominal aorta(62/134,46.27%),and mainly passed into the upper polar(98/134,73.13%) and the lower polar(28/134,20.90%) of the kidney.Conclusion The data of this study based on image anatomy with regard to the pediatric renal artery are useful in the diagnosis and treatment of renal artery disease in children.