Unit 2

Question 1

How large of an area do you treat with ultrasound?

Answer 1

Slightly larger than the diameter than the sound head (approx 4x larger)

Question 2

Output frequency for deeper ultrasound?

Answer 2

1 mHz

Question 3

When using ultrasound, what depth of tissue will 3mHz output frequency effectively treat?

Answer 3

1-3 cm depth

Question 4

Ultrasound can only increase the tissue temperatures when the treatment is approximately:

Answer 4

2-3 times the area of the sound head

Question 5

Which of the following will not trigger the ultrasound to shut down automatically?

Answer 5

Too much coupling gel

Question 6

Coupling mechanisms that are best suited for irregular body parts:

Answer 6

Bladder and Immersion

Question 7

Which coupling method would transmit the most energy, causing more heating?

Answer 7

Direct coupling

Question 8

What water is ideal when using immersion technique?

Answer 8

Degassed water

Question 9

What parameter is primarily responsible for determining if a treatment will be thermal or non-thermal?

Answer 9

Duty cycle

Question 10

Which of the following represents a good setup for an acute injury?

Answer 10

20% duty cycle, with 0.5 W/cm^2

Question 11

Trying to generate heat with a 3mHz output?

Answer 11

3-4 min

Question 12

When applying underwater ultrasound, how far should the sound head be from the body?

Answer 12

1 inch

Question 13

Common mistake made by therapists in tissue heating using ultrasound?

Answer 13

Applying to too large of a treatment area

Question 14

What is the optimal coupling medium?

Answer 14

Ultrasound gel

Question 15

In general, ultrasound is most effective in treating

Answer 15

Painful…

Question 16

Which of the following conditions would therapeutic ultrasound be applicable

Answer 16

Pregnancy using it over the carpal tunnel

Question 17

Output intensity is determined by:

Answer 17

The amount of heat generation desired

Question 18

If non-distilled water is being used:

Answer 18

Increase the intensity by 0.5 W/cm^2

Question 19

Which of the following presentations would indicate the used of therapeutic ultrasound?

Answer 19

Neuroma, muscle spasm and bursitis

Question 20

The pisoelectric crystals will

Answer 20

Expand and contract when current passes through

Question 21

Ultrasound waves easily pass through

Answer 21

Adipose tissue

Question 22

What medium would be most applicable over the distal clavicle?

Answer 22

Gel pad

Question 23

The first step in preparing a patient to us therapeutic ultrasound is

Answer 23

Establish that there are no contraindications present

Question 24

What is the optimal intensity to achieve heating using ultrasound

Answer 24

There is no specific or optimal intensity because the intensity must be adjusted to meet the needs of the specific patient and the characteristics of the specific ultrasound device