Types Of Brain Scans

Question 0

MRI

Answer 0

Magnetic field and pulses of radio waves cause emission of faint radio frequency signals that depend upon the density of the tissue
DOES NOT SHOW FUNCTIONING
More detailed than CAT/CT scans

Question 1

CAT Scan

Answer 1

Creates a computerized image using x-rays passed through various angles of the brain showing 2D slices that can be arranged to show the extent of a legion
DOES NOT SHOW THE BRAIN FUNCTIONING

Question 2

EEG

Answer 2

An amplified tracing of brain activity produced when electrodes positioned over the scalp transmit signals about the brains electrical activity

Question 3

Amplified tracings by EEG are called this when the recorded change in voltage results from a response to a specific stimulus

Answer 3

Evoked potentials

Question 4

PET scan

Answer 4

Produces color computer graphics that depend on the amount of metabolic activity in the images brain region

Question 5

fMRI

Answer 5

Shows the brain at work at higher resolution that the PET scanner. Changes in oxygen in the blood of an active brain area alters its magnetic qualities, which is recorded by the fMRI scanner