Chapter 06: Brain Imaging

Question 0

What is done in a pneumoencephalography?

Answer 0

Some CSF is removed and air is injected into the ventricles; the head is then x-rayed

Question 1

Who developed the cerebral arteriography/angiography?

Answer 1

Égas Moniz

Question 2

What is done in cerebral arteriography/angiogram?

Answer 2

Contrast material is inject into a major artery, then threaded through the carotid artery into the brain; x-ray is done to get results

Question 3

What is done in computers tomography?

Answer 3

A 3D image is generated by taking x-rays rotated around a single axis

Question 4

What is done in magnetic resonance imaging (MRI)?

Answer 4

Magnetic fields and radio waves are produced to affect proton and nuclear spin; these patterns are read to measure volume of different brain structures

Question 5

What is done in diffusion tensor imaging (DTI)?

Answer 5

Magnetism and radio waves are used to interact with water molecules; the water diffusion patterns that result can reveal tissue architecture state

Question 6

What are the images that DTI produces called?

Answer 6

Tractography images

Question 7

What is DTI used for?

Answer 7

Examine the integrity of white matter tracts in the brain

Question 8

What is done in SPECT and PET scans?

Answer 8

IV injection of radioactive tracers allow to track increases in metabolic activity

Question 9

Which has better resolution, SPECT or PET?

Answer 9

PET scan

Question 10

What do near-infrared spectroscopy (NIS) and functional magnetic resonance imaging (fMRI) measure?

Answer 10

Hemodynamic response; the change in blood flow in response to stimulation, cognition, or metabolic activity