A Satisfactory Radiograph Is Made Using 200 MA,0

question 12

Multiple Choice

A satisfactory radiograph is made using 200 mA,0.3 sec,90 kVp,and 72-inch SID. Which of the following techniques will produce a similar result at 40 inches SID?

• A) 200 mA, 0.9 sec, 90 kVp
• B) 200 mA, 0.09 sec, 90 kVp
• C) 200 mA, 0.54 sec, 90 kVp
• D) 200 mA, 0.16 sec, 90 kVp

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Definitions:

Gestalt Laws

Psychological principles that describe how humans naturally perceive objects as organized patterns and objects.

Perceptual Organization

The process by which the brain organizes sensory information to form a coherent, unified view of the world.

Subjective Contours

Perceived contours that do not exist physically. We tend to complete figures that have gaps in them by perceiving a contour as continuing along its original path.

Figure-Ground Relationships

A visual perception principle referring to the organization of visual field into objects (figures) that stand out from their surroundings (ground).