A new non-invasive technique for measuring how well the heart and blood vessels function in patients already suffering from coronary artery disease could, in a single test, identify which abnormally narrowed blood vessels are the most likely to lead to further cardiovascular complications. According to Dr. Aaron So, at Lawson Health Research Institute and Robarts Research Institute in London, Canada, and colleagues, their technique could reveal functional problems in the circulatory system below the limit of detection of the currently most sensitive method, invasive angiography (or blood vessel x-ray).
