Which term describes artifacts that can appear during ultrasonic scanning due to high pulse repetition rates?

The term that accurately describes artifacts appearing during ultrasonic scanning due to high pulse repetition rates is ghost or phantom indications. These artifacts can occur when the ultrasonic waves reflect off various interfaces or boundaries within the material being examined and create misleading signals that may resemble actual defects.

Ghost or phantom indications often appear when the time between successive pulses is too short, causing confusion in interpreting the reflected signals. This situation can lead to false positives where operators may mistake these artifacts for legitimate indications of flaws within the material.

Understanding how ghost or phantom indications occur is essential for ultrasound technicians, as it helps in maintaining accurate scanning practices and interpreting data effectively. Enhanced sensitivity and resolution from high repetition rates can be beneficial, but they also require careful management to avoid these misleading signals.