Random
Which vessels are considered resistive vessels
arterioles
What does PSV stand for
Peak Systolic Velocity
At what level does the external iliac vein become the common femoral vein
inguinal ligament
Which transducer has a 5-15 MHz frequency and is used to image arteries and veins, soft tissue, musculoskeletal, pediatric, ocular, trachea, thyroid, thoracic, DVT, appendicitis, testicular (most procedures as well).
Linear
Where is velocity the highest and pressure the lowest in a stenosis
In the middle
How can you tell the difference between the ECA and ICA
ECA has branches coming off of it
What does ED stand for
End Dystolic
What is the 3rd branch off the abdominal aorta
IMA
Which transducer has a 2-5 MHz frequency and is used for general abdominal (gallbladder, liver, etc), eFAST, renal, aorta, IVC, bladder, bowel and OB/GYN
Curvilinear
What is the nyquist limit?
the maximum doppler shift that can occur without aliasing
The vertebral artery migrates upwards to form what artery?
Basilar Artery
How would you tell the difference in the tunica media between artery and vein
It is thicker in arteries
Whats the seagull sign
It is the celiac trunk, which branches into the common hepatic artery (CHA) and the splenic artery (SA)
Which transducer has a 1-5 MHz frequency and is used for cardiac, abdominal, eFAST, renal, bladder, bowel, IVC
Phased array
What do you do when you see aliasing
increase the PRF
Which 2 vessels become the portal vein
The superior mesenteric vein and the splenic vein
Does the RRA travel anterior or posterior to the IVC
posterior
What is the formula for the resistive index
RI=PSV−EDV/PSV
Which transducer has 8-13 MHz frequency and is used for OB/GYN, peritonsillar abscess
Endocavity
What are Reynolds numbers, and what are the Reynolds numbers for laminar and turbulent flow
Reynolds numbers help predict the type of blood flow in a vessel. For laminar flow, the Reynolds number is 1500 or less. For turbulent flow, the reynolds number is 2000 or more.
The right CCA arises from what artery
Brachiocephalic
What are the three layers of the vessels
Tunica intima, tunica media and tunica adventia
(T or F) The left gonadal vein comes off the LRV
True (associated with w/varicocele)
Which transducer is best for vascular studies
Linear
When color is bleeding out of a vessel, what happens? If color isn't filling the vessel completely, what can you do?
If theres too much color and it is bleeding out, you can lower the color gain. If the opposite is happening and there isn't enough color, you can turn the color gain up.