For a Vascular Ultrasound Contrast Agent to Be Clinically Useful

question 21

Multiple Choice

For a vascular ultrasound contrast agent to be clinically useful, it should:

• A) be nontoxic.
• B) have microbubbles that are small enough to traverse the pulmonary capillary beds.
• C) be stable enough to provide multiple recirculations.
• D) have all of the above characteristics.

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Definitions:

Classical Conditioning

An associative learning process where the consistent pairing of two stimuli facilitates a response that initially originates from the second stimulus but later originates from the first stimulus alone.

Insight Learning

A form of problem-solving that occurs when a solution is suddenly realized after a period of reflection, rather than through trial and error.

Instinctive Drift

The tendency of an animal to revert to instinctual behaviors that interfere with a learned response.

Motor Reproduction

The process of imitating or replicating a specific motor action observed in others.