QA, Safety & SPI

Question 1

The ability of a test to detect disease when it IS present

Answer 1

sensitivity

Question 2

When clot is present on a venogram, how does it appear on the image

Answer 2

“empty” vein with no contrast opacification

Question 3

When evaluating heavily calcified arteries, what system settings should be increased to improve the demonstration of flow in the vessels

Answer 3

persistence and sensitivity

Question 4

What imaging parameter is responsible for the ability to resolve two atheromas that are side by side in an artery

Answer 4

lateral resolution

Question 5

When venous flow is slow, echogenic particles can be seen near the walls and in the valvular sinus. This phenomenon is called

Answer 5

spontaneous contrast

Question 6

What system setting would result in false-positive findings for reflux in the GSV

Answer 6

high color persistence settings

Question 7

How to calculate sensitivity

Answer 7

total number of correct positive diagnoses divided by the total number of truly positive tests

Question 8

The recommended sample size for PW doppler evaluation of an artery is

Answer 8

1-1.5mm

Question 9

What type of image resolution makes it possible to differentiate the intimal media thickness from the outer arterial wall

Answer 9

axial

Question 10

The ability of a test to rule out disease when it is NOT present

Answer 10

specificity

Question 11

A proximal femoral artery stenosis will cause the ________ in the mid femoral to increase

Answer 11

acceleration time to increase

Question 12

Vessel wall and plaque morphology are best evaluated in 2D when the beam is at what incident angle to the vessel

Answer 12

90 degrees

Question 13

_________ is the gold standard in testing fr arterial disease

Answer 13

angiography

Question 14

What is the gold standard evaluation technique for renal artery stenosis

Answer 14

angiography

Question 15

The __________ of a test is calculated by the number of correctly diagnosed negative exams by the total number of true negative exams

Answer 15

specificity

Question 16

What information from a angiography report can be correlated with the ultrasound results

Answer 16

diameter stenosis

Question 17

What modality is preferred to diagnose an aortic dissection

Answer 17

CTA

Question 18

If the acceleration time is >140ms in both common femoral arteries then

Answer 18

aortic disease is suspected

Question 19

The _______ of a test is calculated by the total number of correct diagnoses divided by the total number of diagnoses made

Answer 19

accuracy

Question 20

Pulsatility Index can be used to describe

Answer 20

the amount of variation in the velocity during the cardiac cycle

Question 21

What is the framingham risk score

Answer 21

gender specific criteria for estimation of 10 year risk of cardiovascular disease

Question 22

Abdominal Doppler exams are usually best perofrmed with a frequency of _____ MHz and a lower extremity arterial duplex exams are usually best performed with a frequency of _____ MHz

Answer 22

2-4, 5-7

Question 23

What modality is preferred to diagnose fibromuscular dysplasia in the circle of willis

Answer 23

angiography

Question 24

What would be the probe frequency of choice for a TCD exam

Answer 24

2MHz

Question 25

By dividing the pulsatility index proximal to a stenosis by the pulsatility index from distal to a stenosis, you can evaluate the

Answer 25

damping factor

Question 26

When the velocity of flow is calculated for vessels evaluated on a TCD exam, a ________ degree angle of incidence is assumed

Answer 26

0

Question 27

If new research shows that the minimum velocity criteria used to diagnose >60% renal artery stenosis is actually 225cm/s, not 180cm/s, how will this affect the accuracy of the renal doppler exam

Answer 27

increase will vary with patient population

Question 28

If new research shows that the minimum velocity criteria used to diagnose >60% renal artery stenosis is actually 225cm/s, not 180cm/s, how will this affect the negative predictive value of the exam

Answer 28

decrease will vary with patient population

Question 29

The Appropriate Use Criteria were developed while considering

Answer 29

vascular ultrasound or physiologic testing by itself as a reasonable exam choice

Question 30

What is the gold standard method of diagnosing temporal arteritis

Answer 30

biopsy