Ultrasound

Question 1

Ultrasound is:

Answer 1

Deep heating modality that converts electrical energy into mechanical energy by piezoelectric mechanism.

Question 2

Frequency:

Answer 2

More than 20,000KHz
1MHz = deep tissues
3MHz = superficial tissues

Question 3

Indications:

Answer 3

1. Edema
2. Inflammation
3. Wounds

Question 4

Applications:

Answer 4

1. Direct contact
2. Water bath
3. Water bag

Question 5

Ultrasound is considered:

Answer 5

Micromassage

Question 6

Current:

Answer 6

Pulsed = acute
Continuous = chronic

Question 7

Movement and pattern:

Answer 7

Movement should always be slow

4 patterns: overlapping circular, circular, transverse, figurative

Question 8

Intensity:

Answer 8

Acute = 0.1-0.5
Chronic = 0.5-2 (best 0.8 up to 1)

Question 9

Duration:

Answer 9

Acute = 4 mins
Chronic = 8 mins

Question 10

Indications for water bath:

Answer 10

Irregular surfaces

Question 11

Indications for water bag:

Answer 11

Irregular surfaces

Wounds

Question 12

Dangers:

Answer 12

1. Burns
2. Cavitation
3. Overdose
4. Damage to equipment

Question 13

Physiological effects:

Answer 13

Thermal = relief pain, reduce edema and inflammation
Non-thermal = microsteaming

Question 14

Water bag:

Answer 14

Should be thin 1 cm

Transparent

Question 15

Functions of ultrasound:

Answer 15

Absorption

Scattering

Question 16

Which matter absorbs faster: Solid or gas?

Answer 16

Solid

Question 17

Absorbs most:

Answer 17

Tendons
Ligaments
Fascia
Muscles

Question 18

4 parameters:

Answer 18

1. Mode
2. Frequency
3. Duration
4. Intensity