CT scan or Computerized Tomography. CAT scan or Computerized Axial Tomography. The contrast is iodine based and could be risky if you have iodine allergy or seafood, shellfish allergy. The contrast is also toxic to the kidneys, can lead to acute kidney injury or progression of your chronic kidney disease. #ckd #aki #doctor #physician #medicalstudent #ctscan #catscan #radiology #creatinine #dialysis #shellfish #seafood #allergy #iodine @amermedicalassn @american_heart @amdiabetesassn @isnkidneyca