Figure 1. Coronary calcium score non-contrasted ECG-gated computed tomographic (CT) views of coronary arteries demonstrate presence of multiple calcified plaques through the anatomic territory of left main (L.MAIN) coronary artery and proximal segments of left anterior descending (LAD) and left circumflex (LCX) coronary arteries and their branches (A) and distal segment of right coronary artery (RCA) (B). The measurement table (C) provided by CT workstation demonstrates the calcium score of each coronary artery and their total score based on Agatston technique in the first row, the number of assigned calcified plaques in each territory and their total number in the second row and measured area of the corresponding plaques (according to square millimeters) in the third row. The measured total coronary calcium score (389.57 Agatston Units) in this 66-year old man equals to 77% for that particular gender (male) and age range (65-69 years) according to an available database calculated and shown in the last row.