INTRODUCTION
coronary artery disease
CORONARY ARTERY DISEASE
Coronary computed tomography angiography (CCTA) is a non‐invasive imaging modality that is of great value for diagnosing coronary artery disease (CAD).Efforts have also been made in optimizing the vessel enhancement in order to improve the image quality of CCTA.The purpose of this study was to refine the currently used, body weight grouped protocol for CCTA in terms of the radiation and contrast medium dose, hopefully reducing the dose while improving or at least not affecting the image quality. To do so in a routine clinical setting, the reduction was restricted within an empirical extent that would not severely compromise the image quality and leave the diagnosis totally impossible. The search for optimal protocol was subject to comprehensive comparison of the resulting subjective and objective image quality as well as the applied radiation dose.