 ST. PAUL, Minn.--BUSINESS WIRE--Cardiovascular Systems, Inc. CSI NASDAQ: CSII, a medical device company developing and commercializing innovative interventional treatment systems for patients with peripheral and coronary artery disease, announced today that results from a real-world optical coherence tomography OCT imaging study of coronary OAS patients were released at EuroPCR 2021. The study conducted by Surendra Avula, MD, et al, at the University of Illinois, Chicago, was designed 