Was your stroke preventable?

My dad had blockage in one of his carotid arteries of 85%. It has now been cleaned out. If his doctor had told him to have his children get neck ultrasounds because of his blockage, Or if my doctor had asked me if any of my parents had arterial blockages. I could have easily gotten an ultrasound and cleaned out my bad artery. But I didn't think about it, mainly because I am 30 years younger and was in excellant physical shape with no symptoms.
And obviously neither of the doctors involved did. There should be a way that survivors could provide case studies to medical staff. Our observations could easily be used to prevent strokes and point to rehab successes.
Tilting at windmills again.