Mallinckrodt Inc, St Louis, offers the OptiStat” contrast delivery system, which is designed to provide both operational simplicity and optimum efficiency. The system can be utilized independently or interfaced to a larger, fully featured CT injector. The OptiStat” can also be used as backup injector. In addition, the powerhead accommodates the Mallinckrodt Ultraject? prefilled syringes or a Liebel-Flarsheim 130 mL disposable syringe. (888) 744-1414; .