It doesn't very well. With high traditional risk factors - including cholesterol, blood pressure, current smoking and diabetes - actually 35% of a study population had a zero score. On the other hand with very low traditional risk factors 15% had a CAC score above 100, and would actually be considered very high risk.
Even though that ratio may improve things on a statistical level vs the traditional markers, hopkins saying it is really not adequate. So the ultrafast CT heart scan (you lie on hard table for around 10 minutes) is what to get done if one wants much better accuracy ...
Here is place to find heart scanning in your state. Cost $99 out of pocket so affordable
Type in zip code ... Find Scan Centers in your area
http://www.scandirectory.com/
Closest one for me is over 2 1/2 hour ride in Fort Myers FL. I hate driving. ... probably have a heart attack driving there. ... LOL ... i'll consider it at later time
Here some info on calcium scan for people
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Initially, coronary calcium assessment with CT was made possible with the development of the electron-beam CT scanner in the late 1980’s. The speed of this machine was much higher than that of existing scanners. The high speed made it possible to “freeze” heart motion to allow measurements of calcium in the coronary arteries.
Lately, ultrafast spiral CT has been used to assess coronary calcium. This technique makes the scanning time very short. Often a scanning length of around 10 seconds is used.
Based on a number of studies, the following definitions are used to relate the coronary artery calcium score to the extent of atherosclerotic coronary artery disease:
Coronary calcium score 0: No identifiable plaque. Risk of coronary artery disease very low (<5%)
Coronary calcium score 1-10: Mild identifiable plaque. Risk of coronary artery disease low (<10%)
Coronary calcium score 11-100: Definite, at least mild atherosclerotic plaque. Mild or minimal coronary narrowings likely.
Coronary calcium score 101-400: Definite, at least moderate atherosclerotic plaque. Mild coronary artery disease highly likely. Significant narrowings possible
Coronary calcium score > 400: Extensive atherosclerotic plaque. High likelihood of at least one significant coronary narrowing.
When interpreting coronary artery calcium score, it is very important to consider age and gender. For example, 50% of white males aged 70 have a calcium score higher than 14,5 and 50% of white females aged 70 have a calcium score above 13.