2 doctors weighed in:

If dr orders a CT scan of abd/pelvic w/contrast an without, i can see it being done with contrast but what's the purpose of having it also without?

2 doctors weighed in
Dr. Shari Jackson
Radiology
1 doctor agrees

In brief: Several reasons

Most of the time, IV contrast is all you need for ct a/p.
In some cases, it may be necessary to do both (and sometimes delayed images, too) to fully characterize something (e.g., some adrenal nodules, certain kidney or liver problems). There is added radiation each time you scan, so it is worth asking whether it is necessary for your problem. That said, it is common to do multiple phases.

In brief: Several reasons

Most of the time, IV contrast is all you need for ct a/p.
In some cases, it may be necessary to do both (and sometimes delayed images, too) to fully characterize something (e.g., some adrenal nodules, certain kidney or liver problems). There is added radiation each time you scan, so it is worth asking whether it is necessary for your problem. That said, it is common to do multiple phases.
Dr. Shari Jackson
Dr. Shari Jackson
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