Final answer:
When the sound beam is refracted during an ultrasound examination, the ultrasound image may show axial misregistration, lateral misregistration, reverberations posterior to a reflector, and enhancement of a reflector.
Step-by-step explanation:
When the sound beam is refracted during an ultrasound examination, the detection on the ultrasound image includes axial misregistration, lateral misregistration, reverberations posterior to a reflector, and enhancement of a reflector. Axial misregistration refers to a misalignment of echoes along the direction of the ultrasound beam. Lateral misregistration occurs when echoes are displaced perpendicular to the ultrasound beam. Reverberations are multiple reflections that occur between the transducer and a reflector, appearing as parallel lines on the image. Enhancement is an increase in the intensity of echoes from a reflector due to refraction.