Depends on who's asking. For the Federal government, gross income is income from all sources- earned and unearned. Unearned income is your money making money- investments, dividends, capital gains, sale of property. Earned income is, well, what you actually toiled to attain, like wages, consultation fees, jury duty payment, etc.
Coronary artery calcification is the result of calcium deposition in the coronary arteries. Coronary arteries are blood vessels that deliver blood supply to the heart for its nourishment and oxygen needs.
Coronary artery calcification occurs when calcium builds up in the inner lining of the coronary arteries that deliver blood supply to the heart. High blood pressure may increase an individual's chance of having coronary artery calcification. An electrocardiogram may be conducted to evaluate patients with coronary artery calcification.