Welsh, Carson, Anderson & Stowe agreed to acquire American Health Imaging, a provider of diagnostic imaging services in Decatur, Georgia, for $250m. AHI Founder and CEO Scott Arant will roll over a substantial minority investment in the company. Healthcare-focused WCAS purchased AHI through US Radiology Specialists, which it formed in April 2018 in partnership with Charlotte Radiology, a Charlotte, North Carolina, physician-owned radiology group.