“…Furthermore, Atmaca Y et al demonstrated how miscrovascular functionality can be impaired in patients with Syndrome X, through the computation of a new index defined "Myocardial Blush Grade", which evaluates the passage of the contrast mean through microvessels, visualized as a "blush" of the perfused territory, by counting the number of heart cycles required for it to fade out [11]. Moreover, they calculated a Total Myocardial Blush Score, defined as the sum of the MBG of each coronary territory, to define the overall microvascular functionality and verify its possible alterations in patients with dilatative cardiomiopathy and unharmed coronary trees [12]. Atmaca's and Gibson's surveys provided two diagnostic tools, demonstrating their correlation with an impaired microvascular capability to properly control coronary flow resistance.…”