CT angiograms will expose you to a small amount of radiation. If you have known
coronary artery disease, a traditional
coronary angiogram may be a better option, since you can also receive treatment for your artery blockages during a traditional coronary angiogram. Since you are symptomatic but do not have known coronary artery disease, you can go ahead with the CT scan, based on these findings further therapy can be planned. Regards.