Coronary artery calcification
CORONARY ARTERY CALCIFICATION
Coronary artery calcification (CAC) was assessed using two types of computed tomography. Electron-beam tomography (EBT) was used at the RS-I-3rd visit using a C-150 scanner (Imatron, South San Francisco, California, U.S.A.) in participants not older than 85 years to scan from the level of the root of the aorta through the heart. CAC was quantified using AccuImage software (AccuImage Diagnostics Corporation, South San Francisco, California) [