Computer-Assisted Myocardial Perfusion Assessment

Left ventricle functional analysis can be performed using coronary CT angiography (CTA) images. In recent years it has been proposed that CTA imaging might also be used for myocardial perfusion assessment, by visually looking for hypoattenuated regions that may correspond to hypoperfusion. Assigning a detected lesion to a specific myocardial segment requires significant effort while the clinician matches the American Heart Association (AHA) standard myocardial segments to the anatomy of each patient. This article presents an interactive tool which, based on the existence of a previous left ventricle segmentation, automatically matches the lesions detected by the clinician to a myocardial segment and provides feedback over the image regarding the myocardial segments with detected lesions and their severity.