I am confused. CTs are generally used for hard tissue issues - like bones. I am surprised that your surgeon is not asking for a MRI. I would do the CT as he may have reasons a non medical person (like me) is not aware of, but make sure you get a copy of the report and a copy of the CD from medical records after the fact. You may need to get a second opinion and the CT should not need to be repeated. Please post on how things work out!
BTW I had complications with my hysterectomy and bi-lateral oophorectomy. Turns out I had a hematoma (ie large blood mass) the size of a grapefruit. There was a leak from one of the arteries cut to remove the uterus. (I had endometriosis - so everything was stuck together - not as it should be. The surgeon was working with a total mess...)
There was an scan taken (CT or MRI, I do not recall). Having that documentation would have been very helpful as I ended up in the ER with a fever within a couple of days of discharge...