The renal artery-aorta angle associated with renal artery plaque: a retrospective analysis based on CT

Abstract

Purpose To investigate the relationship between renal artery anatomical configuration and renal artery plaque (RAP) based on 320-row CT. Methods The abdominal contrast-enhanced CT data from 210 patients was retrospectively analyzed. Among 210 patients, there were 118 patients with RAP and 92 patients with no RAP. The anatomical parameters between lesion group and control group were compared and analyzed by using t-test, χ2-test and logistic regression analysis. Results (1) There were statistical differences on age, hypertension, diabetes, hypertriglyceridemia and hypercholesterolemia between lesion group and control group. (2) The differences on the distribution and type and of RAP between lesion group and control group were statistically significant. The most common position was the proximal, and the most common type was calcified plaque. (3)There were significant statistical differences on the proximal diameter of renal artery and renal artery-aorta angle A between lesion group and control group. The differences on the other anatomical factors between two groups were not statistically significant. (4) The result of logistic regression analysis showed that right RAP was related to age, hypertension and right renal artery angle A (the AUC of ROC = 0.82), and left RAP was related to high serum cholesterol, age and left renal artery angle A(the AUC of ROC = 0.83). (5) The RAP was associated with renal artery-aorta angle A, but the differences on distribution, type stability of RAP between R1 (L1) group and R2 (L2) group were not statistically significant. Conclusions The RAP was associated with age, hypertension, hypercholesterolemia and renal artery-aorta angle A. Adults which had the greater renal artery-aorta angle A and the other above risk factors may be at increased risk for RAP.

Does the Location of Fat Accumulation Affect the Degree of Aortic and Renal Arterial Calcification?

“…As in previous studies [27][28][29]32], renal artery calcifications were significantly associated with older age. There was no statistical difference between calcifications in the left and right renal artery, which is in accordance with Yang H et al [32], who found no statistical difference in the incidence of renal artery plaque between the left renal artery and right renal artery.…”

Morphological and Morphometric Analysis of the Renal Artery Using Computed Tomographic Angiography

“…The anatomical angulation formed by the renal arteries when they take off from the aorta is important for the optimal blood supply to the kidney as well as plaque formation and hemodynamics [12,27]. In the literature, measurements of renal artery angulation have been taken in three different planes including coronal, transverse, and sagittal [12,18,25,27,28].…”

“…Csonka et al [12] reported that the angulation between the renal arteries and the aorta should be between 58° and 78° to maintain constant volume flow and velocity and to avoid changes in turbulence, emphasizing that surgeons should maintain this range of angulation during kidney transplantation to preserve hemodynamic flow. In a study comparing individuals with or without renal artery plaques, Yang and Yang [27]…”