DS | DMSA |
---|---|
Acute pyelitis: gray-scale sonography | Normal findings |
Thickening of pelvic or ureteral wall (also visible in cases of reflux) | Normal contour: smooth and continuous without indentations |
Renal sinus hyperechogenicity | Homogeneous parenchymal uptake in all regions of both kidneys |
Mild dilatation (pelvis or ureter) | Normal size and shape of both kidneys |
Acute nephritis: gray-scale sonography | Inflammation |
Increased renal size | Slightly bulging or normal contour |
Triangular hyperechogenicity | Single or multiple, local or diffuse areas of decreased activity in parenchyma, which are diffuse or, rarely, spheric, in at least 2 projections |
Focus of decreased vasculature (Doppler) | Mild to severe degree of photopenia or, rarely, complete absence of activity |
Mass (pseudotumoral pyelonephritis) | No volume loss |
APN: DS | Scarring |
Parenchymal triangular zone of decreased or absent flow | Diffuse or sharp indentation in contour with thinning of cortex |
Any shape defects with loss of renal volume | |
Photopenia (usually severe) or absent activity |
DMSA interpretation criteria are according to Patel et al. (13).