Denver C-Arm System Rentals-OEC 9800 C-Arm Imagining System For Rent In Colorado C-Arm Rental in Denver, CO. The OEC 9800 C-Arm rental is the newest model of the OEC line offered,and is a great unit for practices with bigger budgets that need a c-arm capable of performing basic fluoro procedures. Heartland Medical Sales and Service is a distributor of Used and Refurbished C-Arm Imaging System rentals in Denver, Colorado Springs, Aurora, Fort Collins, Colorado