Renal artery stenosis is a common problem in clinical practice, occurring when the renal artery narrows, restricting blood flow to the kidney. The two most common causes of renal stenosis are fibromuscular dysplasia and atherosclerotic renal artery disease, with atherosclerotic disease accounting for the vast majority of cases.

Digital subtraction angiography of the renal arteries is performed using iodine contrast to visualize the renal vascular system. When the capillaries and parenchyma are enhanced with contrast, the renal morphology as well as the structures of the cortical medulla and renal pelvis are visualized.

Digital subtraction angiography (DSA) captures images of blood vessels using X-rays. This technique can be applied to many different blood vessels in the body, including the renal arteries. So how does the digital subtraction angiography process work?

Acute renal infarction is very dangerous, early diagnosis is essential for early and long-term intervention, thereby helping to preserve kidney function. Although non-specific, the very common symptom of lower back pain can still be the first warning sign of acute renal infarction.