Acoustic frequency recognition of patient lines

A fluid injector system, comprising:

• a powered fluid injector;
• a connection port configured to form a releasable fluid connection with a single-use disposable set for use in delivering fluid to a patient, the single-use disposable set having a fluid inlet port, a waste outlet port, a tubing connected at a first end thereof to the fluid inlet port and at a second end thereof to a connector configured for connection to the waste outlet port and at least one check valve located between the fluid inlet port and the connector or within an additional fluid path set connected to the connector to facilitate fluid delivery to the patient;
• and
• an acoustic frequency detection system having a detector associated with the connection port and configured to generate a signal in response to a sonic, infrasonic, or ultrasonic wave emitted from the single-use disposable set as a result of air flowing through the at least one check valve during a priming operation of the single-use disposable set while the air is being expelled therefrom.