Which of the Following Is True of MRI Imaging

question 124

Multiple Choice

Which of the following is true of MRI imaging?

• A) It is based on the property that certain isotopes, when injected into the body, emit positrons that can be detected in the body.
• B) Diseased and damaged tissues often yield the same image as healthy tissues.
• C) Cells exposed to radiations from MRIs often develop harmful mutations.
• D) It is based on the absorption of energy when certain nuclei are excited by a strong magnetic field.
• E) It involves ingesting a radioactive isotope and measuring the radiation intensity emitted by different regions in the body.

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Definitions:

Random Variable

A variable whose possible values are numerical outcomes of a random phenomenon.

Poisson Distribution

A discrete frequency distribution which gives the probability of a number of independent events occurring in a fixed time.

Mean

The arithmetic average of a set of numbers, found by dividing the sum of all numbers by the count of numbers.

Discrete Probability Distribution

A statistical function that describes the likelihood of each possible outcome of a discrete random variable occurring.