In Positron Emission Tomography (PET)scans,colors Are Assigned That Reflect the

question 13

Multiple Choice

In positron emission tomography (PET) scans,colors are assigned that reflect the 

• A)density of tissue in a particular area. 
• B)response of the cells in a particular area to magnetism. 
• C)magnetic output of an area of the brain. 
• D)amount of activity in a particular area of the brain.

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Definitions:

HNO3

Nitric acid, a highly corrosive and toxic strong acid used in the production of fertilizers, explosives, and in the production of other chemicals.

Reactivity

The inclination of a material to participate in chemical changes, alone or in combination with other elements, leading to the liberation of energy.

Chlorine

A highly reactive, greenish-yellow gaseous element used in water purification and the production of numerous chemicals.

Aluminum Chloride

A chemical compound with the formula AlCl3, widely used in the chemical industry as a catalyst and as a component in a variety of chemical reactions.