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Therapeutic Modalities > Ultrasound > Flashcards

Ultrasound Flashcards

1
Q

mechanical compression sound wave with a frequency greater than 20,000 cycles per second. Thermal and non-thermal effects

A

Ultrasound

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2
Q

Indications for ultrasound (4)

A
  1. pain
  2. bone fracture
  3. tendon/lig injury
  4. carpal tunnel
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3
Q

Contraindications/precautions for ultrasound (4)

A
  1. Pregnancy
  2. CNS tissue
  3. Pacemaker
  4. malignant tumor/cancer
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4
Q

Ultrasound physiological effects (4)

A
  1. Increase tissue temp
  2. increase metabolism
  3. reduce pain- gate control
  4. increase nerve conduction
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5
Q

Ultrasound mechanical effects

A

Cavitation resulting in either stable or unstable bubbles. Unstable bubbles burst generating heat while stable bubbles generate microcurrents

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6
Q

microcurrents take place near the gas bubbles (around any small, oscillating object)

A

microstreaming

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7
Q

steady circular flow of cellular fluids. Alters cellular activity by transporting material

A

acoustic streaming

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8
Q

Phonophoresis parameters anti-inflammatory

A
  • Pulsed duty cycle

- 6 tx max

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9
Q

Phonophoresis parameters anesthetic

A

Can be continuous

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10
Q 
soft tissue shortening
Freq-
Duty cycle-
Intensity-
Duration-
A

Freq- 1 or 3 MHz
Duty cycle- continuous
Intensity- 1.0-2.5 W/cm2
Duration-5-10 min

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11
Q 
Pain 
Freq-
Duty cycle-
Intensity-
Duration-
A

Freq- 1 or 3 MHz
Duty cycle- continuous
Intensity- .5-3.0 W/cm2
Duration- 3-10 min

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12
Q 
Bursitis and Tendonitis
Freq-
Duty cycle-
Intensity-
Duration-
A

Freq- 1 or 3 MHz
Duty cycle- continuous or pulsed
Intensity- .5-1.5 W/cm2
Duration- 3-5 min

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13
Q 
Wound healing
Freq-
Duty cycle-
Intensity-
Duration-
A

Freq- 3 MHz
Duty cycle- pulsed 20%
Intensity- .5-.8 W/cm2
Duration- 3-5 min 3-5/week

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14
Q 
Bone fracture healing
Freq-
Duty cycle-
Intensity-
Duration-
A

Freq- 1 MHz
Duty cycle- pulsed 20%
Intensity- .15 W/cm2
Duration- 15-20 min daily

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15
Q

1 MHz tx depth

A

Up to 5 cm

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16
Q

3 MHz tx depth

A

1-2 cm

17
Q

Tx area size

A

2-4x size of transducer

18
Q

US tx speed

A

4cm/sec

Therapeutic Modalities (15 decks)

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