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Questions and Answers
What is the primary benefit of microstreaming in relation to cell membranes?
What is the primary benefit of microstreaming in relation to cell membranes?
Phonophoresis utilizes ultrasound solely for the purpose of heating tissues.
Phonophoresis utilizes ultrasound solely for the purpose of heating tissues.
False
What is the role of duty cycle in ultrasound treatment?
What is the role of duty cycle in ultrasound treatment?
The duty cycle determines whether the ultrasound is pulsed or continuous, affecting the thermal and non-thermal effects on tissues.
For greater depth in ultrasound treatments, a frequency of _____ MHz should be used.
For greater depth in ultrasound treatments, a frequency of _____ MHz should be used.
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Match the following ultrasound treatment parameters with their appropriate definitions:
Match the following ultrasound treatment parameters with their appropriate definitions:
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Study Notes
Microstreaming
- Microstreaming is generated by gas bubbles (cavitation) moving around cells.
- It agitates cell membranes, increasing ion permeability.
- Microstreaming is linked to enhanced cell permeability, ion exchange, and tissue repair.
Phonophoresis
- Phonophoresis uses ultrasound to deliver medication transdermally, often for reducing inflammation.
- Parameters:
- Frequency: Typically 1 MHz or 3 MHz.
- Duty cycle: Pulsed (20%) for non-thermal effects; continuous for thermal effects.
- Intensity: 0.5-1.0 W/cm² (pulsed) and up to 1.5 W/cm² (continuous).
- Treatment duration: 5-10 minutes.
- Treatment area: 2x the size of the transducer area.
Deep Heat via Conversion
- Ultrasound converts sound waves to mechanical vibration, producing heat and non-thermal effects.
- Penetrates up to 5 cm.
- Parameter selection:
- Frequency: 1 MHz for deeper heating (up to 5 cm) or 3 MHz for superficial heating (1-3 cm).
- Intensity varies according to frequency and depth.
- Duty cycle: Pulsed for non-thermal and continuous for thermal effects. Lower duty cycles reduce thermal effects.
- Treatment area and duration is twice the size of the transducer area for 5-10 minutes.
- Direct vs. Indirect Application:
- Direct: gel, lotion, or pad for coupling agent.
- Indirect: water medium, increase intensity by 50%.
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Description
Explore the principles and applications of ultrasound therapy, including microstreaming, phonophoresis, and deep heat via conversion. This quiz covers key parameters and effects of these techniques on tissue repair and medication delivery.
