Tests Flashcards
Neuroimaging Techniques
Function – used to assess structure & function of brain structures.
Types –
* structural, focuses on brain structure (CAT/CT, MRI, & DTI)
* functional, focuses on brain structure & indirect neuronal activity (PET,SPECT, & fMRI)
Diffusion Tensor Imaging
DTI
Function – structural neuroimaging technique; used to assess white matter tracts (myelinated axon) & structural integrity by identifying rate + direction of water molecule movement & diffusion abnormalities along the axons.
Uses –
* evaluate TBI & concussions
* study white matter abnormalities with cognitive disorders, MS, ASD, & schizophrenia
Computerized Axial Tomography
CAT/CT
Function – structural neuroimaging technique; uses x-rays to obtain images of horizontal slices of the brain.
Uses –
* costs less than MRI
* faster image production
* shorter period of stillness required
* safe for pacemakers & metal in the body
Magnetic Resonance Imaging
MRI
Function – structural neuroimaging technique; uses strong magnetic fields & radio waves to obtain cross-sectional 3D detailed images without radiation.
Uses –
* provides structural info about the brain, spinal cord, & internal structures
Functional Magnetic Resonance
Imaging
fMRI
Function – functional neuroimaging technique; similar to MRI
Uses –
* provides info on changes in blood flow & oxygenation/volume
Positron-Emission Tomography
PET
Function – functional neuroimaging technique; injected radioactive tracer taken up by active brain cells.
Uses –
* assess regional brain flow, oxygen consumption/volume, & glucose metabolism
take your pet to the vet for shots, see how they’re function, check on oxygen, brain flow & glucose metabolism
Single-Photon Emission Tomography
SPET
Function – functional neuroimaging technique; similar to PET
Uses –
* easier + less costly than PET
* less detailed images
street vet, less expensive but less quality images as the vet/PET
