MRI Scanning
- Created by: eliselouisex
- Created on: 15-03-15 09:49
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- MRI Scanning
- magnetic resonance imaging
- patient put through a cylinder with an electro-magnet
- causes a magnetic field in the body that aligns all H atoms
- radio wave pulses knock them back out causing detectable radio signals
- strength of returned signal determines what tissue type it came from
- those containing lots of H atoms are white
- those containing few H atoms are dark
- 3D image
- greater contrast to abnormal cells
- no harmful radiation
- expensive equipment
- some people worry about the process
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