Ultrasound, contrast-enhanced ultrasound and pyelonephritis: A narrative review

Figure 2 B-mode and contrast enhanced-ultrasound images showing a focus of pyelonephritis. In the B-mode image, a non-homogeneous ovary image is highlighted at the cortical level. Upon completion of contrast enhanced-ultrasound, this area appears hypovascular compared to the surrounding parenchyma, especially 40 seconds after the infusion of the contrast medium.