I have Hypertension, with a h/o of AKI. 6 months back i had problem in both my kidneys with reduced blood flow in both renal arteries, but now one of my kidney has improved and creatine has come down to 1.00. A recent renal doppler has shown my left kidney has become bigger from before( lies in the normal range) with normal blood flow and my right kidney has become a bit smaller than the normal range with reduced blow flow in the renal artery. Doctor has suggested a ct renal angiography to rule out RAS. I want to know how safe is the procedure and if contrast is safe for me or not. Also if there is any other safer alternative to ct renal angiography.