MRI

Question 1

CT scans

Answer 1

Multiple x rays beams are passed through the head at different angles and are 3D rendered

Question 2

MRI

Answer 2

measures tissue density via nuclear magnetic resonance and uses frequency waves to expose tissue

Question 3

Ultrasound

Answer 3

Uses spoundwaves to determine locations of the surface between tissues
Ultrasound is measured by time between emission of pulse and echo created on the surface

Question 3

Ultrasound

Answer 3

Uses spoundwaves to determine locations of the surface between tissues
Ultrasound is measured by time between emission of pulse and echo created on the surface

Question 4

MRI stages

Answer 4

Magnet lines up protons using big magnets
Radio signal flips protons out of line
Radio is switched off flipping protons to realign to release electromagnetic energy at a certain wavelength
A coil coverts the electromagnetic energy to current which is measured
Low magnetic field strength makes proton spin slower
In MRI magnetic field is high the head and low at the feet
Each block of tissue in the brain

Question 5

What is a voxel

Answer 5

A block of tissue in the brain

Question 6

TR

Answer 6

The amount of time between pulse sequence

Question 7

TE

Answer 7

Time between the RF and echo signal

Question 8

T1 and T2 images

Answer 8

T1 images-Short TR and TF

T2 images-Longer TR and TF