When the X-Ray Photon Strikes an Atom Within the Tissue

question 18

Multiple Choice

When the x-ray photon strikes an atom within the tissue being imaged and loses only part of its energy to an outer shell electron of that atom,the photon is said to have been _____ and undergone the _____.

• A) transmitted; coherent effect
• B) absorbed; photoelectric interaction
• C) attenuated; photoelectric interaction
• D) scattered; Compton interaction

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Definitions:

Round Lots

Standardized number of units of a financial instrument, usually 100 shares for stocks.

Per Share

A financial metric that represents some quantity divided by the total number of outstanding shares of a company, often used in financial ratios.

First-day Returns

The percentage change in price of a stock or other security from its offering price on its first day of public trading.

SIPC

SIPC stands for the Securities Investor Protection Corporation, which is a nonprofit organization that insures investors' securities and cash in the event a brokerage firm goes bankrupt or faces financial difficulties.