TCD (transcranial Doppler)

Question 1

0 degree angle

Answer 1

all TCD

Question 2

C1

Answer 2

cervical

Question 3

C2

C3

Answer 3

petrous

lacerum

Question 4

C4

C5

Answer 4

cavernous

clinoid

Question 5

C6

C7

Answer 5

supraclinoid

communicating (terminal)

Question 6

collateral supratrochlear

Answer 6

superior temporal

Question 7

collateral dorsal nasal

Answer 7

facial

Question 8

PULSED WAVE

Answer 8

TCD

Question 9

No CW

Answer 9

TCD

Question 10

Color is pulsed wave

Answer 10

never CW

Question 11

mean velocity

Answer 11

correlates with perfusion

Question 12

MCA depth

Answer 12

30-60 mm

Question 13

ACA/MCA bifurcation

Answer 13

55-65 mm bidirectional

Question 14

ACA

Answer 14

60-80 mm away

Question 15

ACA velocity

Answer 15

50 +/- 11 cm/sec away

Question 16

P1

Answer 16

60-70 mm toward

Question 17

P1 velocity

Answer 17

39 +/- 10 cm/sec

Question 18

vertebral

Answer 18

60-90 mm away

Question 19

vertebral velocity

Answer 19

38 +/- 10 cm/sec

Question 20

basilar artery

Answer 20

80-120 mm away

Question 21

basilar velocity

Answer 21

30-57 cm/sec

Question 22

transorbital window : 4 levels

Answer 22

parasellar,

genu,

supraclinoid,

ophthalmic

Question 23

ophthalmic resistance

Answer 23

high

Question 24

most velocities 80 cm/sec

Answer 24

> 100 cm/sec bad

Question 25

siphon

Answer 25

60-80 mm

Question 26

terminal ICA

Answer 26

55-65 mm ambiguous

Question 27

ophthalmic artery

Answer 27

40-60 mm, toward 21 +/- 5 cm/sec

Question 28

M1

Answer 28

30-60 mm toward 55 +/- 12 cm/sec

Question 29

P2

Answer 29

60-70 mm, away, 40 +/- 10 cm/sec

Question 30

siphon (orbital window)

Answer 30

60-80 mm, 47 +/- 14 cm/sec variable flow direction

Question 31

vasospasm in MCA

Answer 31

120-140 cm/sec mild (100-200) 140-200 cm/sec moderate (120-200) \> 200 cm/sec severe 43-67 cm/sec normal MCA

Question 32

Lindegard ratio (hemispheric index)

Answer 32

compares ICA to MCA for severity of vasospasm

Question 33

MCA/ICA ratio normal (hemispheric index)

Answer 33

\< 3 MCA 100-200 cm/sec

Question 34

MCA/ICA ratio moderate vasospasm

Answer 34

5-7 MCA 120-200 cm/sec

Question 35

emboli

Answer 35

chirps or HITS

Question 36

brain death

Answer 36

flow reversal

Question 37

intraplaque hemorrhage

Answer 37

hypoechoic rim

Question 38

incidence fetal ICA

Answer 38

25%

Question 39

4 factors for vessel identification

Answer 39

depth direction spatial orientation mean velocity

Question 40

Transorbital window: vessel direction of siphon and OA

Answer 40

parasellar and genu flow toward probe supraclinoid flows away ophthalmic flow toward

Question 41

MCA/ICA ratio severe vasospasm

Answer 41

\>7 velocity MCA \> 200 cm/sec

Question 42

terminal ICA

Answer 42

55-65 mm

Question 43

ophthalmic artery collateral

Answer 43

abnormal side ACA reverses (toward)

Question 44

intracrancial collaterals for ACA

Answer 44

develop turbulence and reverses (toward)