gradient echo

MRI

Creation of images

 

Placing patient into a strong magnetic field

- 30 000 x stronger than the earth's magnetic field

 

Stronger magnets, better images, shorter times

- 1.5 Tesla 

- 3 Telsa

 

The nuclei of elements with odd numbers of protons line up

- i.e. hydrogen atoms

- hydrogen is plentiful in fat and water

 

A radiofrequency is then applied, exciting the protons