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Neurological Methods
MRI & fMRI
MRI
how it works
How it works
MRI
- magnetic field
- computer generated
- diagnoses from torn ligaments to tumors
- 3D anatomical images
- contrast agents can be used
fMRI
- measures function instead of structure
Lesion studies
- The first method of neural research by French neurologist Charcot
- Detected by removing pieces of the skull
Lesion Studies
CT & PET
CT:
- computerized tomography
- x-ray
- 2D images of organs, bones, tissues
- vascular irregularities
- contrast dyes used
PET:
- positron emission tomography
- measure radioactive isotopes injected into bloodstream
- sensors detect gamma rays
- highlight tumors, diseased tissue, and blood flow
CT & PET
Additional methods
- SPECT: Single photon emission computed tomography
- angiography
- biopsy
- EEG
- cerebrospinal fluid analysis