请教：国内冠状动脉堵塞百分之九十五和美国heart scan calcium score 的换算

我一个大学同学冠状动脉堵塞百分之九十五到九十九。只好开了一刀，搭了三个桥（因放支架已不能完全解决问题了）。现在医生要求他将低密度脂蛋白胆固醇控制在1.8以下。

美国heart CT scan,(coronary calcium scan) give a score.

The score is the total area of calcium deposits and the density of the calcium.

• A score of zero means no calcium is seen in the heart. It suggests a low chance of developing a heart attack in the future.
• When calcium is present, the higher the score, the higher the risk of heart disease.
• A score of 100 to 300 means moderate plaque deposits. It's associated with a relatively high risk of a heart attack or other heart disease over the next 3 to 5 years.
• A score greater than 300 is a sign of more extensive disease and a higher heart attack risk.
• 和过内的堵塞%是怎么换算？