1. If we wanted to use some brain-mapping techniques to identify anatomical functioning, but did not want to use any type of dye or tracer, which method below would be the best choice?
A. MRI
B. EEG
C. PET
D. SPECT

2. In PET scans, the breakdown of ___________ materials in the body and the release of gamma rays produce a functional view of the brain.
A. organic
B. radioactive
C. toxic
D. metallic

3. PETs and SPECTs commonly use _______________ materials such as oxygen, fluorine, carbon, and nitrogen.
A. radioactively-labeled
B. noninvasive
C. naturally-occurring
D. deadly

4. Fill in the blank with the letter of the description that best matches the type of brain scan.
Descriptions
A. Uses electrodes placed on the scalp to detect and measure patterns of electrical activity emanating from the brain
B. Uses magnetic fields and radio waves to produce high-quality two- or three-dimensional images of brain structures without injecting radioactive tracers
C. Detects changes in blood flow to particular areas of the brain to provide both an anatomical and a functional view of the brain
D. A scanner detects radioactive material that is injected or inhaled to produce an image of the brain
E. Uses a series of X-ray beams that are passed through the head
PET

SOMEONE HELP!