Structural vs Functional Imaging

1. 1What is a Tesla?

   1. AMeasures magnetic flux density
   2. BMeasures magnetic induction
   3. CMeasures the magnetic field
   4. DMeasures electromagnetic fields
2. 2What is true of AC?

   1. A= Alternating Current
   2. BAs opposed to Direct Current (DC)
   3. CDeveloped by Nikola Tesla
   4. DGoes for much longer distances than DC
   5. EGoes for much shorter distances than DC
3. 3What is true of X-ray contrast angiography?

   1. AUses a contrast agent (dye)
   2. BDoesn't show you the brain tissue itself
   3. CShows blood vessels
   4. DShows axonal tracts
4. 4The different parts of the brain:

   1. Aabsorb x-rays in a uniform way
   2. Babsorb different amounts of x-rays depending on their depth
   3. Cabsorb different amounts of x-rays depending on their location
5. 5What is true of Structural brain imaging?

   1. AGives you a picture of brain anatomy
   2. BGives you a picture of brain activity
6. 6What are types of Structural brain imaging?

   1. AX-rays
   2. BCT scans
   3. CMRI
   4. DfMRI
   5. EEEG
   6. FMEG
   7. GPET
7. 7What is true of Computed Tomography?

   1. AUsed to be called Computerised Axial Tomography
   2. BComputers enhance slight differences in x-ray absorption by different issues
   3. CShows problems in the brain based on ventricles
   4. DIf part of the brain dies off, the ventricles will occupy that space
   5. EIs rarely used these days
   6. FShows blood vessels
8. 8What is true of MRI?

   1. ABased on different hydrogen (proton) densities in different tissues
   2. BHas poor spatial resolution
   3. CInvasive technique
   4. DThere's a big difference in water level between different tissues
9. 9What is true of contrast agents in MRI?

   1. AIs usually gadolinium
   2. BEnhances contrast between the blood vessels and the brain itself
   3. CUsually used if you suspect blood supply to the brain has been interrupted
   4. DUsually used in cases of hydrocephalus
   5. EIs usually Argon
10. 10EEG:
    Sensor= [blank_start]electrodes[blank_end]
    Measures [blank_start]electrical potentials[blank_end]
    
    MEG:
    Sensor = [blank_start]SQUID[blank_end]
    Measures [blank_start]magnetic flux[blank_end]

    1. Aelectrodes
    2. Belectrical potentials
    3. CSQUID
    4. DBOLD
    5. Emagnetic flux

11. 11What is true of Functional brain imaging?

    1. AGives you a picture of brain activity
    2. BGives you a picture of brain anatomy
12. 12What are types of functional imaging?

    1. APET
    2. BfMRI
    3. CEEG
    4. DMEG
    5. EMRI
    6. FCT
13. 13What is true of PET?

    1. A= Positron Emission Tomography
    2. BInject a radiolabelled isotope (radioactive tracer)
    3. CVery active parts of the brain will take up more of the radioactive substance
    4. DVery active parts of the brain will filter out more of the radioactive isotope
    5. ETracer is usually based on oxygen or glucose
    6. FTracer is usually based on plasma
14. 14What is true of fMRI?

    1. ADetects changes in regional Cerebral Blood Flow (rCBF)
    2. BSignal depends on the ratio of oxygenated:deoxygenated haemoglobin
    3. COverlay the functional scan on top of a structural scan
    4. DInjection of a radiolabelled isotope
    5. EVery active parts of the brain will take up more of the activity
15. 15Which functional techniques are haemodynamic?

    1. APET
    2. BfMRI
    3. CMRI
    4. DCT
    5. EEEG
    6. FMEG
16. 16Which functional techniques are electrophysiological?

    1. AEEG
    2. BMEG
    3. CPET
    4. DMRI
    5. EfMRI
    6. FCT
17. 17What is true of Haemodynamic functional techniques?

    1. AHigh spatial resolution
    2. BPoor temporal resolution
    3. CPoor spatial resolution
    4. DHigh temporal resolution
    5. ETemporal resolution of a few seconds
18. 18What is true of electrophysiological techniques?

    1. AMeasure electromagnetic fields generated by current in active neurons
    2. BMeasure electromagnetic fields generated by ionic current flow
    3. CHave high temporal resolution
    4. DHave temporal resolution of a milliseconds
    5. EHave poor temporal resolution
    6. FHave temporal resolution of seconds
    7. GSpatial resolution is more complicated
    8. HHigh spatial resolution
    9. IDirect measures of neuronal activity
    10. JIndirect measures of neuronal activity
19. 19Electrical and magnetic fields change instantaneously when current flow changes

    1. AVerdadero
    2. BFalso
20. 20[blank_start]Haemodynamic[blank_end]: [blank_start]PET[blank_end] measures neural metabolism/regional blood flow, whilst [blank_start]fMRI[blank_end] measures regional blood flow
    [blank_start]Electromagnetic[blank_end]: [blank_start]EEG[blank_end] measures electric fields from ionic currents, whilst [blank_start]MEG[blank_end] measures magnetic fields from ionic currents

    1. AHaemodynamic
    2. BElectromagnetic
    3. CPET
    4. DfMRI
    5. EEEG
    6. FMEG
    7. GCT
21. 21Haemodynamic techniques have good [blank_start]spatial[blank_end] resolution
    Electromagnetic methods have good [blank_start]temporal[blank_end] resolution

    1. Aspatial
    2. Btemporal
    3. Ctemporal
    4. Dspatial

Descripción

Neuroscience Test sobre Structural vs Functional Imaging, creado por Jennifer Khouw el 16/06/2018.

Autor

Jennifer Khouw

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English

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