Manatee Diagnostic Center History Manatee Diagnostic Center was organized in 1985 and purchased by Dr. Angus Graham in 1988. Manatee Diagnostic Center West opened its doors in 1993. In 1994, the MRI at Manatee Diagnostic Center was added to the complete our state-of the-art practice. In 1999, the Open MRI Downtown was added to the services provided by Manatee Diagnostic Center, and in 2009, our...