Renal vascular malformation is one of the rare vascular malformations that cause hematuria. Due to the abnormality in the blood vessels, the parenchymal structure and function of the kidney are also affected. Accordingly, digital subtraction angiography and embolization of renal vascular malformation are radical interventions, restoring the normal vascular structure of the kidney and preserving kidney function in the long term.

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?