Again, I would recommend discussing this with your physician (either primary care or the urologist). We generally do not recommend blanket scanning everyone with CTs and MRIs for non-specific abdominal pain especially in young patients, unless the clinical history warrants further investigation (it's not because we mind the extra work; it would be comically easy to read a bunch of negative studies all day and charge for it).Laypeople and even people in the medical field tend to assume that imaging is a magic answer box, but it oftentimes is not and the potential benefits of imaging may not outweigh the risks/costs.
What would be used to rule out cancer then?