Wu W, et al. - Researchers intended to offer more precise correlation of ectatic parameters to decreased coronary perfusion (increased coronary frame count). They tested the hypothesis that the more ectatic the coronary arteries are, the more severe the coronary flow will be affected. They consecutively studied the topographical parameters of ectatic coronary arteries and/or segments of isolated coronary artery ectasia (CAE) patients and used angiographic frame count to determine the corrected thrombolysis in myocardial infarction (TIMI) frame count [CTFC] for each coronary artery. Findings demonstrated a significant correlation of the severity of the topographical extent of CAE with increased CTFCs. For the assessment of decreased coronary flow in isolated CAE patients, the importance of both the linear dimension and ectatic diameter (combined as estimated ectatic area) were highlighted.