very high calcium CT

i am a 60 year old physician.. i had strokes 14 years ago felt to be secondary to PFO/ASA and anticardiolipin ab's..i have been on warfarin without incident since..recently i had a calcium CT after becoming suddenly hypertensive..my score was 1800..i have had no previous HBP, high cholesterol, family history of early heart disease and am not overwt and swim 1 1/2 miles 5 days a week plus lots of walking and have not had anginal symptoms that i have recognized..i am not a  diabetic or overwt..there is some info from europe about warfarin and vascular calcification, which my cardiologist and i feel might have been a factor in my case....i am now on amlodopine and high dose lipitor after a cath that showed only one mild plaque, no narrowing, but lots of calcium...any other ideas ie diet like Vit k2 foods that might help ?? any thoughts about prognosis ?