Need to repeat ct scan for lung and abdominal. would using contrast again really needed. i am concern about reaction and side effect on kidney.?

Usually: Iv contrast is a cornerstone of high quality ct imaging of the thorax and abdomen, especially. Often, the thorax can be imaged effectively for a number of reasons without IV contrast, but the majority of abdominal exams require IV contrast. Iv contrast reaction is very rare on initial exams and extremely rare (<1:10, 000) after a previous normal administration. Renal function can be affected rarely.