Radiation Is Stopped and May Not Reach the Receptor When

question 14

Multiple Choice

Radiation is stopped and may not reach the receptor when it interacts with an area of high attenuation, such as:

• A) Soft tissue.
• B) Large amalgam restorations.
• C) Periodontal abscess.
• D) Normal anatomic structures.

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Definitions:

Acid

A substance that releases hydrogen ions when dissolved in water, typically having a pH less than 7 and capable of turning blue litmus paper red.

Alkali

A base that dissolves in water, typically found among the group 1 elements of the periodic table, such as sodium and potassium, which form strongly basic hydroxides.

Ion

A charged atom.

Electron

One of the three major parts of an atom. The electron carries a negative charge.