Magnetic Resonance Imaging MRI

MRI radiation

Nonionzing

MRI uses

Magnet and radio waves to obtain image

Seperoir contrast because

Demonstrates molecular makeup of tissue

Used to evaluate

Head Brian spine joint alignment and cartilage

MRI procedure

1 hr anesthesia

MRI take advantage of

Natural magnetic properties of hydrogen atoms in body

Hydrogen ions helps create

A detailed image thay can diffetinate between soft tissue bone and body fluids

Signal intestines provide

Difference between light and dark regions of tissue and organs help detect lesions

Radio waves

Manipulate hydrogen atoms in and out of an excited engery state

How does MRI work

P placed in strong magnetic field radio frequency to hydrogen atoms respond by resonating into higher engery state radio frequency is removed molecule return to normal state give off radio frequency produces image

similarity to MRI to CT

Thin slice cross sectional anamoty

CT

Anything without hydrogen ions

MRI

NO MAGENTS