Radiology 4.6

Question 1

Which structure lies directly midline in the brain and can be viewed (but typically isn’t) on plain film?

Answer 1

pineal gland

Question 2

What is the advantage of using an angiogram over an MRI?

Answer 2

diagnose AND treat

Question 3

Will bone or lung be darker on a CT?

Answer 3

lungs (radiolucency due to air) light to dark: air, fat, soft tissue, bone

Question 4

When would a cerebral ultrasound be used?

Answer 4

evaluate extra-cranial vessels (carotid arteries)

Question 5

When would a CT be used?

Answer 5

head trauma (bony lesions, hematoma)

Question 6

When would an MRI be used?

Answer 6

tumors, post-surgery

Question 7

What is the cause of an epidural hematoma?

Answer 7

bone lesion and middle meningial artery hematoma

Question 8

What is this?

Answer 8

MRA

Question 9

What is this?

Answer 9

PD

Question 10

What is this?

Answer 10

T1

Question 11

What is this?

Answer 11

T2

Question 12

If the CSF appears dark on an image, which type of image is it?

Answer 12

T1-MRI

T2-MRI FLAIR

Question 13

What are the shapes of an epidural and subdural hematoma?

Answer 13

epidural: lemon
subdural: crescent