What are the Limitations of Ultrasound in the evaluation of kidney disease?
• Does not show fine pelvicalyceal detail
• Does not show the entire normal ureter, although it may occasionally see proximal or distal ureters
• Sometimes there is a limited acoustic window for seeing kidneys, especially on the left
• Does not show the entire retroperitoneum
• Can miss small kidney calculi and most ureteral calculi
• Gives no functional information
• Operator dependent
