ultrasound

Question 1

what do electrical systems produce?

Answer 1

electrical oscillations of any frequency

Question 2

electrical oscillations of any frequency be …

Answer 2

easily converted into mechanical vibrations which produce sound waves of a high frequency than the upper limit of human hearing (20-20,000hz) - ultrasound

Question 3

what is the space between pulses also?

Answer 3

time between the reflected pulses

Question 4

compromises?

Answer 4

it has to be a good enough image and low risk

Question 5

is it safe?

Answer 5

• are uw non ionising?

- x rays are ionising which can cause cancer if given at a high dose (not safe for pre natal scanning)

Question 6

what do ct scans do that is bad?

Answer 6

they use a lot of x ray radiation which exposes the patient to even more ionising radiation (generally not taken)

Question 7

image quality?

Answer 7

• uw produce fuzzy images which makes it harder to diagnose some conditions
• x rays produce clear photos of bones and metal (nothing else)
• ct scans produce detailed images which can diagnose illnesses because of the high resolution images

Question 8

where are high quality 3d images used?

Answer 8

in the planning of a complicated surgery