Head/Neck

Question 1

What is the slice thickness for a CTA head/neck

Answer 1

0.5-1.5mm

Question 2

What is the injection rate for the bolus for a CTA head

Answer 2

3-4 ml/s

Question 3

If not using an ROI for a CTA head, what is the delay time

Answer 3

10-20 seconds

Question 4

What is being evaluated in a CTA head

Answer 4

the circle of willis

Question 5

Portions of the circle of willis

Answer 5

anterior and posterior cerebral arteries
anterior and posterior communicating arteries
internal carotid arteries (ICAs)

Question 6

What is being evaluated in a perfusion study

Answer 6

level of blood flow through the brain

Question 7

what is cerebral blood volume (CBV)

Answer 7

quantity of blood flow through 100g of brain tissue

Question 8

what is cerebral blood flow (CBF)

Answer 8

volume of blood that moves through 100g per min

Question 9

what is avg CBV

Answer 9

4-5ml/100g

Question 10

what is avg CBF

Answer 10

50-60ml/100g/min

Question 11

how much contrast is in the bolus for a perfusion study

Answer 11

50ml

Question 12

what is the injection rate for a perfusion study

Answer 12

4-7ml/sec over 45-60 sec

Question 13

what is the slice thickness for a ST neck

Answer 13

3-5mm

Question 14

what size SFOV is used for a ST neck

Answer 14

medium-large

Question 15

what is the DFOV for a ST neck

Answer 15

18-25cm

Question 16

what are the avg WL and WW for a ST window for a ST neck

Answer 16

WL: 50 WW: 400

Question 17

what are the avg WL and WW for a bone window for a ST neck

Answer 17

WL: 300 WW: 2000

Question 18

how much contrast is used for a ST neck

Answer 18

50-150ml

Question 19

what is the injection rate for a ST neck

Answer 19

1-3ml/sec

Question 20

how long is the delay for a ST neck

Answer 20

30-60 sec