894300
Descripción
Mapa Mental por Heloise Tudor, actualizado hace más de 1 año
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Creado por Heloise Tudor
hace casi 10 años
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MRI Scans
- Strong magnetic field passes over body
allowing brain to be seen inside skull.
- Patient placed in
large scanner
- Noisy, but painless
- Detailed image of brain
generated as the nuclei of
atoms in molecules
arranged in a specific way
- Electromagnetic waves pass
through body causing nuclei to
emit their own radiowave
- Before scan, dye (contrast
medium) injected to show organs.
- Strengths
- High validity
- Accurate for checking abnormalities
- Ethical
- Non-invasive
(compared to
surgery)
- Replicable
- Checked by numerous people
- High validity
- Weaknesses
- Noisy, enclosed, could be harmful
- Stressful for patient
- Limited information generated. Clear images but no brain activity measured.
- Noisy, enclosed, could be harmful
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