Is There a Place for Elastography in the Assessment of Chronic Kidney Disease?

Abstract

Renal elastography is a real-time ultrasound-based imaging method that can potentially be used in order to assess diffuse diseases of native kidneys. In order to find a place in the clinical practice for renal elastography, what is influencing the obtained results should be known. The kidney shear wave speed is influenced by different factors such as age, gender, measurement depth or urinary pressure. The relationship with renal function and also with renal fibrosis is different across different studies, with not all studies showing an increase in renal stiffness in more advanced renal diseases. However, the changes in renal blood flow seem to influence renal elastography, and a decrease in renal blood flow could be the cause of the decrease in the shear wave speed and could have a bigger influence on elastography compared to renal fibrosis. This paper provides a summary about the factors that seem to influence renal elastography and also regarding the limitations of this method according to the published studies thus far.