Diagnostic Studies

Question 1

TTE vs TEE which is used to evaluate EF?

Answer 1

TTE

Question 2

Hemorrhage on CT vs MRI

Answer 2

CT = white, seen immediately
MRI = black on T1 or T2

Question 3

When is the best time to see a SAH on CT

Answer 3

Within 4-5 days. SAH can only be visualized in the acute stage

Question 4

What kind of test is done after SAH has been established?

Answer 4

Angiography

Question 5

Study of choice for suspected intracranial hemorrhage

Answer 5

CT head without contrast

Question 6

CT scan color infarct vs hemorrhage

Answer 6

Infarct = black
Hemorrhage = white

Question 7

SAH finding on MRI

Answer 7

Acute SAH = decreased signal (black) on T1 and T2

Question 8

What is used to detect vasospasms and collateral pathways?

Answer 8

Transcranial Doppler Ultrasound

Question 9

Acute vs chronic hemorrhagic infarct findings on MRI

Answer 9

Acute = decreased signal (black) on T1 and T2
Chronic = increased signal on T1 and T2

Question 10

MRI findings of acute vs chronic infarct

Answer 10

Acute = increased (white signals) on T2 weight image; T1 has mildly decreased signal
Chronic = decreased T1 and T2 weighted images.

Question 11

What kind of stroke is CT scan best for? Hemorrhagic or ischemic?

Answer 11

Hemorrhagic

Question 12

Most sensitive and specific imaging technique for acute infarct

Answer 12

Diffuse weighted imaging MRI

Question 13

What kind of stroke is LP primarily used to diagnose?

Answer 13

Subarachnoid hemorrhage- detects blood in csf

Question 14

4 Complications from angiography

Answer 14

Stroke, occlusion, spasm and dissection

Question 15

Infarct on CT vs MRI

Answer 15

CT = dark, seen after 24h
MRI = bright, seen immediately