From its Melbourne, Florida headquarters, Sun Nuclear develops quality-management solutions that help cancer centers check diagnostic imaging and radiation-therapy systems. Now part of Mirion Medical, the company combines software such as its SunCHECK connected workspace with measurement devices and phantoms, supporting independent QA at more than 6,000 cancer-treatment facilities in 130-plus countries. Its global support operation includes more than 20 medical physicists, backed by a 5,000-square-foot training center built to resemble a clinical setting.