Ultrasound

Question 1

What other pieces of equipment should be prepared?

Answer 1

transducer, tv, monitor, control panel and printer

Question 2

What other environmental considerations should be taken?

Answer 2

light and sound

Question 3

Define Anechoic

Answer 3

without an echo (black)

Question 4

Define Hypoechoic

Answer 4

darker than usual

Question 5

Define Hyperechoic

Answer 5

brighter than usual

Question 6

What is an A-Mode?

Answer 6

amplitude mode- simplest form, shows position of tissue interfaces

Question 7

What is an B-Mode?

Answer 7

brightness mode, creates 2D image of tissues, most common

Question 8

What is an M-Mode?

Answer 8

time motion/ movement mode- image surfaces moving

Question 9

What is the function of a transducer?

Answer 9

converts electrical energy into vibration

Question 10

What speices can you NOT use surgical spirit on?

Answer 10

cats

Question 11

What are the patient preparation considerations?

Answer 11

clip hair- contact for transducer
apply coupling gel- improves contact
clean with spirt before can improve image quality-
lateral/dorsal recumbency
lateral- heart sinks towards chest wall

Question 12

Define acoustic window

Answer 12

area over which sound waves amplified

Question 13

Define acoustic impendance

Answer 13

degree of resistance, passage of ultrasound- (depends on tissue density/ velocity)

Question 14

Define interference

Answer 14

junction of two tissues with different impendences- waves reflected back as echos

Question 15

Which position is best for an endocardiography?

Answer 15

underneath, cut out on special table top

Question 16

What is a transducer?

Answer 16

hand-held probe, converts electrical energy to vibration- produces sound waves- receives returning echos
different are used for particular frequencies