Ultrasound 2

Question 1

What are the different types of probes? (mention the frequency and what they best image)

Answer 1

Linear: 5-15 MHz
Soft tissue, Musculoskeletal, most procedures.

Curvilinear: 2-5 MHz
General Abdominal (Gallbladder, Liver, etc), Bladder, Bowel, OB/Gyn

Phased Array: 1-5 MHz, Cardiac, Abdominal, eFAST, Renal, Bladder, Bowel, IVC

Question 2

Linear probes leave a ___________ footprint

Answer 2

linear

Question 3

Curvilinear probes leave a ________ footprint

Answer 3

wide

Question 4

Phased array probes leave a _____________ footprint

Answer 4

narrow

Question 5

What’s one advantage of the phased array transducer?

Answer 5

An advantage of a phased array transducer is that the beam can be “steered” or directed to different areas giving it a wider field of view than a linear probe. This allows for a smaller transducer size but there is a tradeoff in resolution.

Question 6

B-Scans are used in obstetrics to:

Answer 6

Diagnose pregnancy, access viability of foetus, gestational age (femur length, crown-rump length, biparietal diameter,abdominal circumference) in order to determine the foetal weight, placental location, multiple pregnancies, foetal malformation

Question 7

True or False: M-scan stands for motion and is useful for cardiac valve action.

Answer 7

True