A Lateral Thoracic Projection with Poor Positioning Demonstrates Closed Eighth

question 2

Multiple Choice

A lateral thoracic projection with poor positioning demonstrates closed eighth through twelfth intervertebral disk spaces. How was the patient mispositioned for such a projection to be obtained?
1) The central ray was not aligned perpendicular to the thoracic vertebrae.
2) The vertebral column was not aligned parallel with the imaging table.
3) A radiolucent sponge was not accurately positioned between the lateral surface of the patient and the imaging table.
4) The hips and knees were extended.

• A) 1 and 2 only
• B) 2 and 3 only
• C) 1, 2, and 3 only
• D) 4 only

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Definitions:

Perfectly Inelastic

A situation where the quantity demanded or supplied of a good does not change regardless of the changes in its price.

Perfectly Elastic

A situation in economics where the demand or supply for a good is completely responsive to changes in price, resulting in an infinite elasticity.

Mutual Interdependence

A situation in which a change in price strategy (or in some other strategy) by one firm will affect the sales and profits of another firm (or other firms). Any firm that makes such a change can expect its rivals to react to the change.

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