A patient with an acute ankle sprain is being treated with ultrasound. The ultrasound is being applied by immersing the foot and ankle into water. Which of the following parameter settings would be most appropriate for treating this patient’s ankle?

The optimal area of ultrasound heating is 4 to 5 times the effective radiating area.

Which of the following statements best explains why the soundhead should be continuously moved during ultrasound treatments?

Which of the following physiological responses is an advantage of using heat rather than cold for patient interventions?

A physical therapist assistant uses ultrasound to heat tissues at a depth of approximately four centimeters. Which of the following ultrasound parameters would influence the depth of tissue heating MOST?

Phonophoresis is a treatment method using soundwaves to introduce anti-inflammatory medication such as Dexamethasone into an area with pain caused by inflammation.  

Which of the following heat transfer mechanisms occurs with fluidotherapy?

You have performed a sensation test with normal results prior to the application of a 20 minute hot pack treatment to the low back. Which of the following would be the most appropriate reason to remove the heat before 20 minutes.

During which phase of matter do molecules have the weakest bonds and are the most free to move about?

When therapeutic ultrasound waves pass through human tissue, the sound waves change from mechanical to thermal energy. This event describes which of the following therapeutic means of heat exchange?