Varian Clinac Series Low Energy Machine Models: 6/100, 600C, 600C/D, 6EX Varian Clinac Series High Energy Machine Models: 2100C, 2100C/D, 2300C/D, 21EX, 23EX, 21iX For many years, cobalt-60 systems were the equipment of choice for radiation therapy in developing regions of the…