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A member asked:
Had routine ct's with contrast and without, for kidney stones. now they want to send me for a ct urogram. what is the difference?
A doctor has provided 1 answer
Contrast: A plain ct looks for stones. A ct urogram uses IV contrast (dye) to better evaluate the renal pelvis and ureter (the "tube" connecting your kidneys to your bladder). These structures are not well seen without contrast. A greater amount of contrast is used in a urogram than normal contrast ct to better fill these structures.
Answered 6/11/2021
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