Therapeutic Ultrasound Treatment Parameters Quiz

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Questions and Answers

What is the frequency range of audible sound?

20-20,000 Hz (correct)

Less than 20 Hz

1-3 MHz

Greater than 20,000 Hz

What is the main therapeutic use of Ultrasound (US)?

Treatment of respiratory infections

Treatment of cardiovascular diseases

Treatment of bone fractures (correct)

Treatment of neurological disorders

What is the frequency range of Conventional Ultrasound (CUS)?

40 KHz

1,5 MHz

1-3 MHz (correct)

Less than 20 Hz

What is the production mechanism for ultrasound therapy based on?

Piezoelectric phenomenon Signup and view all the answers

Which materials exhibit the piezoelectric phenomenon?

Artificial quartz, crystals, and ceramics Signup and view all the answers

What is the property of bone that is utilized by ultrasound to generate the piezoelectric effect?

Piezoelectric coefficient Signup and view all the answers

How long is each treatment when using ultrasound application for generating the piezoelectric effect in bone?

20 minutes Signup and view all the answers

Which type of ultrasound energy atomizes saline water and delivers it as mist to clean and debride devitalized tissues?

Noncontact low-frequency ultrasound Signup and view all the answers

What is the frequency range for conventional ultrasound (CUS) according to the given text?

1-3 MHz Signup and view all the answers

In the spectrum of therapeutic ultrasound, which type of ultrasound has a delivery mode of continuous (C) and effect of thermal (T)?

Conventional ultrasound (CUS) Signup and view all the answers

What is the main consequence of the continuous vibration produced by pulsed ultrasonic waves?

Production of thermal energy Signup and view all the answers

Which property is directly proportional to ultrasonic attenuation?

Frequency Signup and view all the answers

What plays an important role in minimizing interference between soft tissues and bone during ultrasonic reflection?

Conducting gel Signup and view all the answers

Which zone is known for having varying properties in ultrasonic beam projection?

Fresnel zone Signup and view all the answers

What causes the formation of empty spaces or cavities in fluids or solids due to the formation of microbubbles?

Cavitation Signup and view all the answers

For which type of condition is continuous ultrasound mode with heat effects more suitable?

Chronic thermal conditions Signup and view all the answers

What is the recommended ultrasound frequency for deeper penetration?

1 MHz Signup and view all the answers

Which area should be treated with small treatment surface eras?

Fractures Signup and view all the answers

What is the recommended mode pulse ratio and duty cycle for continuous ultrasound mode?

1:0 ratio and 100% duty cycle Signup and view all the answers

Which technique involves continuous, slow, overlapping, circular or longitudinal movement of the soundhead over the targeted tissue during ultrasound treatment?

Dynamic technique Signup and view all the answers

Study Notes

Ultrasound (US) therapy uses mechanical and thermal effects for treating various conditions.
Continuous US mode with heat effects is more suitable for chronic thermal conditions. Pulsed US mode with mechanical effects is used for acute conditions.
US frequency ranges from 1 MHz for deeper penetration (4 cm) to 3 MHz for superficial treatment (2 cm).
Treatment surface includes large (5cm2) and small (1cm2) eras depending on the size of the area to be treated.
Ultrasound dosimetry: The higher the duty cycle, the higher the thermal effects.
US mode pulse ratio and duty cycle: Continuous mode has a 1:0 ratio and 100% duty cycle, pulsed mode has various ratios from 1:1 to 1:19.
Indications for US therapy include degenerative and rheumatic disorders, contractures, tenosynovitis, capsular and ligamentous fibrosis, scar tissues, fractures, and some precautions and contraindications.
Over recent fractures, growing epiphyseal plates, osteosynthesis or metallic implants, areas with acute inflammation, cavities with air, breast implants, and patients who have received radiotherapy are US precautions.
US contraindications include over the spinal cord after laminectomy, recent wounds or hemorrhagic areas, infected lesions, eyes and ears, keloid scars, malignant areas, pacemakers, heart area, gonads, ischemic areas, areas of thrombosis, plastic and cementing implants, and pelvic, lumbar, abdominal areas of women menstruating or pregnant.
Put water drops over the transducer before starting the US treatment, use ideal coupling media (gel) for optimal results, and avoid reflections by keeping the soundhead parallel to the surface and at least 15 degrees angulation away from the skin.
Use stationary, dynamic, or semi-stationary techniques depending on the application, and consider additional methods like phonophoresis or combined therapy with electrical currents.
Stationary technique involves keeping the soundhead stationary over the targeted tissue during treatment, while dynamic technique uses continuous, slow, overlapping, circular or longitudinal movement of the soundhead over the targeted tissue.
Phonophoresis is a technique that uses a balloon filled with gel or a drug medium as the US conduction medium, and it can be used for diagnosis or therapy.
Combined therapy with electrical currents can be used with US for diagnosis and therapy, with various electrical current types and intensities depending on the application.
Indications for US therapy include painful areas, contractures, and acute inflamed areas, while contraindications include electromagnetic therapy general contraindications and US-specific contraindications.
Low-intensity pulsed ultrasound (LIPUS) is a US-based therapy that uses mechanical effects for various therapeutic applications.

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Description

Test your knowledge of therapeutic ultrasound treatment parameters with this quiz. Explore the different modes of delivery, depth, frequency, and treatment surface options for chronic and acute conditions.