The pulse duration of an ultrasound and transducer system does not change significantly as long as the system components remain unchanged.

The sonographer cannot change the duration of a sound pulse unless the transducers are switched.

A sound pulse strikes a boundary between 2 media with normal incidence. The speed of sound in the 2 media are very different; however, the impedances of the media are identical. What will happen?

The nurse is reviewing the adverse effects of antithyroid medications for a patient prescribed propylthiouracil (PTU). What potential serious adverse effects would the nurse discuss with the patient during discharge teaching? (Select all that apply.)

The attenuation coefficient usually varies

Ultrasound waves traveling through lung tissue attenuate to a ____ extent than when traveling through soft tissue.

If the angle of incidence is 45 degrees and medium one has a propagation speed of 1,547 m/sec and medium 2 has a propagation speed of 1,745 m/sec, what occurs with transmission?

SPL can be calculated by:

A patient that sustained a lower extremity burn three months ago is treated in an outpatient physical therapy clinic. The patient’s burns appear to be fully healed, however the patient exhibits decreased knee flexion due to scar tissue. As part of the treatment program the physical therapist assistant performs passive stretching activities in an attempt to promote collagen extensibility. Which thermal agent would be the most beneficial to enhance the effectiveness of the treatment session?

A physical therapist assistant implements an aquatic program for a patient rehabilitating from a total hip replacement. During the treatment session the patient indicates how much easier it is to walk in the water compared to on land. What factor is responsible for the patient’s ability to walk in water?