Patient with tia history, what does it mean to have a small calcified plaque is present in right carotid bulb, however, without causing significant ar?

CAD: The calcified plaque means you have atherosclerotic vascular disease. The rest suggests it isn't obstructive at this time. You should speak with your dr. About diet, exercise, and possibly medications directed at atherosclerotic disease and tia.

Talk to a surgeon: You are right to associate the calcified plaque with the TIA -- and this is certainly possible. However just because it is there, doesn't mean it is causing the symptoms. What a surgeon would want to know is how narrow is the blockage, and are the symptoms potentially caused by it. You should talk to an experienced vascular surgeon.