3 doctors weighed in:

Does an abdominal CT scan with and without contrast have the same amount of radiation as two CT scans?

3 doctors weighed in
Dr. Joseph Accurso
Radiology
1 doctor agrees

In brief: Yes

The ct scan will consist of at least 3 parts.
A very low dose scan to show the anatomy and allow for planning of the full ct scan. The next scan is the "real" scan without contrast. Then there will be at least 1 scan with contrast, usually when the veins are most opacified, at about 70 seconds after the start of the injection. However, some contrast scans have multiple phases for some anatomy.

In brief: Yes

The ct scan will consist of at least 3 parts.
A very low dose scan to show the anatomy and allow for planning of the full ct scan. The next scan is the "real" scan without contrast. Then there will be at least 1 scan with contrast, usually when the veins are most opacified, at about 70 seconds after the start of the injection. However, some contrast scans have multiple phases for some anatomy.
Dr. Joseph Accurso
Dr. Joseph Accurso
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Dr. David Earle
Surgery

In brief: Yes

However, there are techniques to reduce radiation exposure.
Also, make sure you ask the reason for both scans, as many times there is no clinical need for both. I there is a sound reason however, then proceed as your doctor advises.

In brief: Yes

However, there are techniques to reduce radiation exposure.
Also, make sure you ask the reason for both scans, as many times there is no clinical need for both. I there is a sound reason however, then proceed as your doctor advises.
Dr. David Earle
Dr. David Earle
Thank
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