Yeah, a cat scan is pretty much safe.
I say 'pretty much' because the ionizing rays cat scans apply can cause DNA which can lead to cancer. Same as X-rays. However, this is very rare, and your doctor would only give you a cat scan/X-ray if he thought you really needed one.
What I'm saying here is that, for all practical purposes, cat scans are safe.
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do lymph nodes show on a cat scan
They are just as they say. An abdominal cat scan is just of that area and a pelvic cat scan is just of that area. Usually if an abdominal cat scan is ordered a pelvis is included so as to cover all things in both areas but if a pelvic cat scan is ordered it usually does not include the abdomen.
You do not have to stay home after a CAT scan. The procedure has no residual effects. After you leave the clinic or hospital, you can resume normal activities if you are otherwise healthy.
yes
Without. I had a cat scan this morning for that very reason and no contrast was needed.