A multi-dose injection system (108) is disclosed that allows for safe and easy use of bulk containers, a multi-use tubing set (110), and syringes (86a, 86b) across multiple patients. The bulk containers may include a saline bottle (118) and a contrast bottle (120) for administration to a series of patients undergoing imaging procedures. The bottles (118, 120) may be fluidly connected to a cassette (114) that includes a saline valve (176) and a contrast valve (178) operable to control flow from the saline bottle (118) and the contrast bottle (120), respectively. The cassette (114) may be fluidly interconnected to the multi-use tubing set (110) that is, in turn, fluidly connected to syringes (86a, 86b) on a powerhead (50) and a patient-specific tubing set (112). The patient-specific tubing set (112) may be replaced between patients and may also serve to isolate the remainder of the multi-dose injection system (108) from contamination from bodily fluids.
