As I had a Coronary Artery Calcium scan a few years ago, the title of your post caught my attention. I wanted to offer some ideas to consider and discuss with your doctor.
1. If you're taking a calcium supplement, is there a clinical need? If so, don't use a cheap one and be careful of the dose. Personally, I don't supplement with calcium.
2. If you're taking supplemental Vitamin D, be aware that it can enhance your absorption of calcium from food and supplements.
3. Vitamin K2, among other things, helps the body store calcium where it belongs (the bones) and keep it from where it doesn't belong (blood vessels, kidneys). As Vitamin K2 can be difficult to get solely from diet, a supplement may be worth considering. The two main forms of Vitamin K2 are MK-4 and MK-7. Personally, I take the MK-4 form, but there are also supplements than use both forms.
4. I've read that statins can reduce the body's ability to convert vitamin K1 into vitamin K2, so a little extra Vitamin K2 (whether via diet or supplement) may be warranted, if continuing to take a statin.
5. Also, if still taking a statin, taking some supplemental CoQ10 may be worth considering, as statins can inhibit its natural production.
Here are some of the sources I used to compile my above list:https://www.ncbi.nlm.nih.gov/pmc/articles/pmc4566462https://labs.selfdecode.com/blog/calcium-levelshttps://www.healthline.com/nutrition/vitamin-d-and-vitamin-khttps://www.healthline.com/nutrition/vitamin-k2https://www.webmd.com/diet/foods-high-in-vitamin-k2#1https://www.todaysdietitian.com/newarchives/060113p54.shtmlhttps://www.marksdailyapple.com/what-are-the-differences-between-vitamin-k2-mk-4-and-mk-7https://books.google.com/books/about/vitamin_k2_and_the_calcium_paradox.html?id=wqhkmhnzuwcc
Again, be sure to discuss these ideas with your doctor, should you decide to try any of them. I'm neither a doctor nor nutritionist, so keep that in mind.
Best of luck,