Which of the Following Radiographic Techniques Is Best for Determining

question 4

Multiple Choice

Which of the following radiographic techniques is best for determining the presence of a ball-valve type obstruction?

• A) A standard portable A-P chest X-ray
• B) A lateral neck radiograph
• C) Either a right or left lateral decubitus film
• D) Inspiratory and expiratory A-P chest X-rays

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Definitions:

Bipolar Cells

Neurons in the retina that transmit signals from the photoreceptors to the ganglion cells.

Blindsight

A phenomenon in which people who are perceptually blind in certain areas of their visual field demonstrate some response to visual stimuli without consciously perceiving them.

Gestalt

An organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.

Opponent-Process Cells

Specialized cells in the visual system that are responsible for processing color through opposing responses to different wavelengths of light.