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| If the US intensity is too high, the patient will complain of a deep ache from? |
OVERHEATING OF THE PERIOSTEUM |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| Where does most reflection occur? |
AT A SOFT TISSUE BONE INTERFACE |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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True/False
Although US is a poor choice for heating muscle. It is a good choice for heating scar tissue on muscle. |
TRUE
DO TO THE INCREASED COLLAGEN. |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| Tissues with low absorption coefficients generally have a? |
HIGH WATER CONTENT |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| The US crystal is made of a material with? |
PIEZOELECTRIC PROPERTIES |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| Continuous US is generally used to produce? |
THERMAL EFFECTS |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| Attenuation is a result of? |
-ABSORPTION
-REFLECTION
-REFRACTION |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| US enters the body and is attenuated in the tissue by? |
-ABSORPTION
-REFLECTION
-REFRACTION |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| If someone complains of a burning sensation during US, what might you want to do? |
-PAUSE THE TX
-ADD GELL
-MOVE THE TRANSDUCER FASTER
-DECREASE THE INTENSITY |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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| What are the mechanical, non thermal effect of ultrasound? |
-CAVITATION
-MICROSTREAMING
-ACOUSTIC STREAMING |
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MichaelMorano Mon, 01 Mar 2010 00:48:21 GMT |
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True/False
Bone and tendon together will heat up slower? |
FALSE
WILL HEAT UP FASTER |
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MichaelMorano Sun, 28 Feb 2010 21:55:15 GMT |
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| How quickly should the ultrasound head (transducer) be moved? |
2-4 cm/sec |
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MichaelMorano Sun, 28 Feb 2010 21:55:15 GMT |
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| On average, soft tissue temp has been show to increase by what with US? |
0.2 DEGREES PER MINUTE WHEN DELIVERED AT 1W/cm squared at 1 MHz. |
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MichaelMorano Sun, 28 Feb 2010 21:55:15 GMT |
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| What are the thermal effects of ultrasound? |
-ACCELERATION OF METABOLIC RATE
-REDUCTION OF PAIN AND MUSCLE SPASM
-CHANGE IN NERVE CONDUCTION VELOCITY
-INCREASED CIRCULATION
-INCREASED SOFT TISSUE EXTENSIBILITY
-HEATS TISSUES WITH HIGH US ABSORPTION COEFFICIENTS. |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| In order to get a thermal effect, the US must be on? |
CONTINUOUS |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| What is the duty cycle for pulsed US? |
20% |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| If 1MHZ is used, intensity is higher do to what? |
ATTENUATION |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| In order to crank up the intensity you must increase what? |
THE FREQUENCY |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| What are the typical sizes of a transducer? |
2cm or 5cm |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| In order to achieve a therapeutic use of ultrasound, the frequency must be between? |
0.7 and 3.3 MHZ |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| Ultrasound has a frequency of? |
GREATER THAN 20,000 Hz |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| Pulsed ultrasound is generally used for? |
HEALING |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| When was ultrasound first used? |
DURING WWII FOR SONAR |
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MichaelMorano Sun, 28 Feb 2010 20:00:22 GMT |
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| The duty cycle can be? |
CONTINUOUS OR PULSED. |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| In order to heat the piriformis, what frequency would you use? |
1MHZ
(THE PIRIFORMIS IS COVERED BY THE GLUTEUS MAXIMUS WHICH WOULD REQUIRE MORE DEPTH) REQUIRES AT LEAST 5CM OR 2.5 INCHES IN DEPTH. |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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True/False
Muscle has a high collagen content? |
FALSE
MUSCLE HAS A LOW COLLAGEN CONTENT |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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True/False
Ultrasound is not good for heating up muscle? |
TRUE |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| What is collagen? |
A FORM OF CONNECTIVE TISSUE ASSOCIATED WITH TENDONS, LIGAMETNS AND FASCIA. |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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True/False
Connective tissue is not heat sensitive? |
FALSE
CONNECTIVE TISSUE IS HEAT SENSITIVE |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| Why do we want to heat up tissues? |
TO INCREASE SOFT TISSUE EXTENSIBILITY |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| Good for increasing tissue healing? |
NON THERMAL ULTRASOUND |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| 3MHZ frequencey can heat to what depth? |
1-2cm DEEP (HIGHER TEMP) |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| 1MHZ frequency can heat to what depth? |
5cm DEEP (LOWER TEMP) |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| Name some things that have a high collagen content? |
-TENDONS
-LIGAMENTS
-JOINT CAPSULE
-FASCIA |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| What is ultrasound mostly attracted to? |
COLLAGEN |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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True/False
Ultrasound heats more deeply and heats smaller areas than most superficial heating agents? |
TRUE |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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| Ability to increase tissue temperature. Used primarily prior to stretching shortened soft tissue and for decreasing pain? |
THERMAL ULTRASOUND |
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MichaelMorano Sat, 27 Feb 2010 23:41:46 GMT |
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