Ultrasound Flashcards
1
Q
Ultrasound is:
A
Deep heating modality that converts electrical energy into mechanical energy by piezoelectric mechanism.
2
Q
Frequency:
A
More than 20,000KHz
1MHz = deep tissues
3MHz = superficial tissues
3
Q
Indications:
A
- Edema
- Inflammation
- Wounds
4
Q
Applications:
A
- Direct contact
- Water bath
- Water bag
5
Q
Ultrasound is considered:
A
Micromassage
6
Q
Current:
A
Pulsed = acute Continuous = chronic
7
Q
Movement and pattern:
A
Movement should always be slow
4 patterns: overlapping circular, circular, transverse, figurative
8
Q
Intensity:
A
Acute = 0.1-0.5 Chronic = 0.5-2 (best 0.8 up to 1)
9
Q
Duration:
A
Acute = 4 mins Chronic = 8 mins
10
Q
Indications for water bath:
A
Irregular surfaces
11
Q
Indications for water bag:
A
Irregular surfaces
Wounds
12
Q
Dangers:
A
- Burns
- Cavitation
- Overdose
- Damage to equipment
13
Q
Physiological effects:
A
Thermal = relief pain, reduce edema and inflammation Non-thermal = microsteaming
14
Q
Water bag:
A
Should be thin 1 cm
Transparent
15
Q
Functions of ultrasound:
A
Absorption
Scattering
