Which part of the automatic pressure injector drives the plunger forward and delivers contrast at the set PSI?

The high-pressure mechanism is responsible for driving the plunger forward in an automatic pressure injector, which is crucial for delivering contrast media at the specified pressure (PSI). This mechanism is engineered to generate the necessary force to move the plunger through the syringe, ensuring that the contrast is injected rapidly and consistently into the vascular system. The ability to adjust the PSI allows for precise control over the injection rate and helps optimize imaging quality during procedures.

In this context, the control panel is primarily for user interaction, allowing the operator to set parameters and monitor performance without directly influencing the physical process of injection. The heating device, while important for maintaining the viscosity of the contrast agent, does not play a role in the mechanical delivery of the injection itself. The syringe holds the contrast medium but relies on the high-pressure mechanism to facilitate the actual movement and ejection of the contrast through its nozzle. Therefore, the high-pressure mechanism is integral to the function of the automatic pressure injector in vascular interventional procedures.