EXAM- Neuroimaging Techniques

Question 1

Define neuroimaging

Answer 1

Technique that captures a picture of the brain

Question 2

What is CT?

Answer 2

Uses X-ray equipment to scan brain at different angles and produce scans showing STRUCTURE ONLY

Question 3

What is an advantage and disadvantage of CT?

Answer 3

• advantage: determines when surgery is needed

- disadvantage: high volumes of radiation

Question 4

What is MRI?

Answer 4

Uses magnetic fields to vibrate atoms in brains neurons to generate computer image showing STRUCTURE ONLY

Question 5

What is an advantage and disadvantage of MRI?

Answer 5

• advantage: no involvement of radiation

- disadvantage: scanners are quite expensive

Question 6

What is PET?

Answer 6

Produces colour images of BOTH BRAIN STRUCTURE AND ACTIVITY

Question 7

What is an advantage and disadvantage of PET?

Answer 7

• advantage: distinguish between cancerous and non cancerous tumours
• disadvantage: must be short procedure due to radiation exposure

Question 8

What is fMRI?

Answer 8

Detects and records brain activity by measuring oxygen consumption across the brain and produces colour image of BOTH STRUCTURE AND FUNCTION

Question 9

What is an advantage and disadvantage of fMRI?

Answer 9

• advantage: evaluates both structure and activity

- disadvantage: if metal device involved malfunctions, it causes problem during exam