Ultrasound (Pandya)

Question 1

(T/F) Transducer send above 30 KHz

Answer 1

FALSE: above 20 KHz

Question 2

mainly used by who?

Answer 2

OB/GYN

Question 3

B mode:

Answer 3

2D, stationary soft tissue

Question 4

Doppler is used to detect?

Answer 4

for blood flow

Question 5

M Mode:

Answer 5

motion mode for video

Question 6

isoechoic:

Answer 6

same brightness as surrounding soft tissues

Question 7

hyperechoic:

Answer 7

BRIGHTER than surrounding soft tissue (whiter)

Question 8

Hypoechoic:

Answer 8

DARKER than surrounding soft tissue (blacker)

Question 9

Anechoic:

Answer 9

completely black, no echoes, fluid will look like this

Question 10

What are sound waves that travel through soft tissue or fluid called?

Answer 10

Windows

Question 11

What do sound waves not travel through?

Answer 11

• air

- bone

Question 12

What is a therapeutic method of ultrasound?

Answer 12

Ablation of tumors via SOUND energy which is converted to thermal

Question 13

(TQ) what are the benefits of ultrasound?

Answer 13

NO radiation and can alter frequency when pt is on table

Question 14

Main safety risk of ultrasound?

Answer 14

overheating–> but not big deal if ppl are trained

Question 15

How do we differentiate b/w real pregnancy and ectopic pregnancy?

Answer 15

Real: you can see the yolk sac
Ectopic: will show a pseudo sac

Question 16

(TQ) Velocity is ELEVATED beyond point of stenosis (high grade stenosis) can be determined from…?

Answer 16

Vascular ultrasound

Question 17

What does it mean if a vascular ultrasound has a high velocity ratio?

Answer 17

the distal part has a high velocity indicating that there’s stenosis

Question 18

to diagnose DVT, what should you NOT see on the ultrasound?

Answer 18

compression