ultrasound

Question 1

what is ultrasound

Answer 1

ultrasound is high frequency sound waves produced by a piezo-electrical transducer for the bennefit of sioft tissue healing

Question 2

what frequency is ultrasound

Answer 2

1- 3 Mega Hearts

Question 3

what is the piezoelctric effect

Answer 3

electrical currents cause the crystal within the transducer to expand and compress, this creates movemtn at the transducer head producing ultrasound waves

Question 4

what structures absorb sound waves better

Answer 4

ones with lower water and higher protien content

Question 5

what frequency is used for superifical structures

Answer 5

3Mhz

Question 6

whta frquency is good for deep structures

Answer 6

1Mhz

Question 7

define continuous ultrasound

Answer 7

ultrasound inetnsity remains consistent over time, provides a thermal effect that could promote blood flow

Question 8

defien pulsed ultrasound

Answer 8

ultrasound is in intervals so overall output is lower and there is less thermal effect

Question 9

when should you use pulsed ultrasound

Answer 9

if the injury is at the acute stage or if a inflamatory repsonse is still prresent

Question 10

when should you use continuous ultrasound

Answer 10

when the injury is at a subacute or chronic phase

Question 11

how long dshould treatment be applied

Answer 11

1 minute x size of heads needed (1 or) x pulse ratio

Question 12

shocase the duty cycles of pulsed ratios modes

Answer 12

acute is1:4 or 20%, sub actute is 1:2 or 1:3, pulsed ratio is 1:1 or 50%