摘要
Abstract
Coronary artery calcium score (CACS) is an important non-invasive indicator to assess cardiovascular risk stratification, occurrence, development and prognosis of coronary heart disease. Complied with the principle' as low as reasonably achievable' (ALARA), direct method (reduced tube current and tube voltage, and automatic tube current modulation), indirect method (large pitch and iterative reconstruction), direct measurement on images from coronary CT angiography (CCTA), and virtual unenhanced images derived from dual-energy CCTA and images from chest CT scan without ECG-gated, were adopted in order to reduce radiation. With those techniques, risk stratification of cardiovascular events can be evaluated accurately and repeatedly at as low radiation dose as possible.关键词
冠状动脉/钙化积分/辐射剂量/体层摄影术,X线计算机Key words
Coronary artery/Calcium score/Radiation dose/Tomography/X-ray computed分类
医药卫生
