Medical devices employed for injecting radio-opaque contrast media into the body to enhance the visibility of tissues for a medical imaging procedure are known as contrast injectors. Over the years, with ever-increasing technological sophistication, these contrast injectors have evolved from manual injectors having manifolds with stop-cocks to automated versions, providing added accuracy and advantages. These automated versions are known as autoinjectors. Autoinjectors are capable of controlling the amount of contrast media injected, utilization rate, and are also able to increase dosage to keep pace with fast medical imaging scanners as well as alert the physician of potential hazards, such as air embolisms or extravasations.