Circle Cardiovascular Imaging Inc, a Calgary-based developer of advanced post-processing software for the cardiac imaging (CVI) industry, has secured $16 million in follow-on funding. The round was led by U.S. investor Kayne Anderson Capital Advisors and Canadian private equity firm Yaletown Partners. The proceeds will mostly be used to accelerate commercialization of Circle’s CVI software suite for cardiologists and radiologists. Founded in 2007, Circle’s product is used in more than 800 hospitals in over 40 countries. Led by CEO Greg Ogrodnick, the company is also backed by BDC Capital, Epic Capital Management, Foundation Equity and other investors.