Brain Imaging Techniques

Question 0

Cerebral angiography

Answer 0

A contrast X-ray technique for visualizing the cerebral circulatory system by infusing a radio-transparent dye into a cerebral artery

Question 1

Contrast X-ray techniques

Answer 1

X-ray techniques that involve the injection into one compartment of the body a substance that absorbed X-rays either less than or more than the surrounding tissue

Question 2

Computed tomography

Answer 2

A computer assisted X-ray procedure that can be used to visualize the brain and other internal structures of the living body

Question 3

Magnetic resonance imaging

Answer 3

A procedure in which high resolution images of the structures of the living brain are constructed from the measurement of waves that hydrogen atoms emits when they are activated by radio frequency waves in a magnetic field (provides high spatial resolution)

Question 4

Positron emission tomography

Answer 4

A technique for visualizing brain activity, usually by measuring the accumulation of radioactive 2-deoxyglucosr or radioactive water in the various areas of the brain (not an image of the brain but a colored map of the amount of radioactivity)

Question 5

Functional MRI

Answer 5

A magnetic resonance imaging technique for inferring brain activity by measuring increased oxygen flow into particular areas (widely used for medical diagnosis, nothing is injected, good spatial resolution but not temporal, provides structural and functional info)

Question 6

Electroencephalography

Answer 6

A technique for recording the gross electrical activity of the brain through disc shaped electrodes on the scalp (diagnosis tool for stated of consciousness or types of cerebral pathology like epilepsy)

Question 7

Magnetoencephalography

Answer 7

A technique for recording changes produced in magnetic fields on the surface of the scalp by changes in underlying patterns of neural activity

Question 8

Stereotactic surgery

Answer 8

The means by which experimental devices are precisely positioned in the depths of the brain

Question 9

Immunochemistry

Answer 9

A procedure for locating particular proteins in the brain by labeling their antibodies with a dye or radioactive element and then exposing slices of brain tissue to the labeled antibodies

Question 10

In situ hybridization

Answer 10

A technique for locating particular proteins in the brain, molecules that bind to the mRNA that directs the synthesis of the target protein are synthesized and labeled, and brain slices are exposed to them