Radiology 2.2

Question 1

Which imaging modalities will be completed when a patient presents with head trauma

Answer 1

1) x-ray

2) CT

Question 2

What is the source for CT?

Answer 2

x-rays

Question 3

What is the source for MRI?

Answer 3

magnetic fields

Question 4

What is the source for ultrasound?

Answer 4

ultrasound fields of material waves

Question 5

What is the main advantage of CT?

Answer 5

• fast

- inexpensive

Question 6

Which type of MRI is better for viewing anatomy?

Answer 6

• T1

- high resolution

Question 7

Which type of MRI is better for viewing pathology?

Answer 7

• T2

- high contrast

Question 8

What are the shortcomings of ultrasound?

Answer 8

• poor propagation through bone

- no propagation through air (lungs)

Question 9

What are the “acoustic windows” of trans cranial ultrasound doppler (TCD)?

Answer 9

• transtemporal
• transorbital
• suboccipital
• submandibular

**listening for normal blood flow

Question 10

What are the four most common methods of iaging the coratid artery?

Answer 10

1) antiography (expensive)
2) gadolinium enchancement
3) CT angiography
4) duplex ultrasoundography

most to least expensive