X-ray
If your doctor suspects kidney stones, he may order an Xray.
An abdominal X-ray can show most kidney stones and
can also help the doctor judge changes in the size of the
stone over a period of time.
Ultrasound
Some doctors use an ultrasound instead of X-rays. An
ultrasound is safe, painless and noninvasive. The drawback
is that it may miss smaller stones.
Intravenous Pyelography
An intravenous pyelography is done by injecting a contrast
dye into a vein in your arm. A series of X-rays is then taken
as the dye moves through your kidneys, ureters and
bladder.
CT Scan
The CT scan has become pretty standard for evaluating
kidney stones. It's a fast test, can identify even the
smallest stones, and doesn't require contrast dye. The
drawback is that it’s very expensive.
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