If a Lateral Projection of the Femur Will Include the Hip

question 36

Multiple Choice

If a lateral projection of the femur will include the hip joint, where should the top of the IR/collimated field be placed?

• A) Level of the iliac crest
• B) Level of the greater trochanter
• C) Anterior superior iliac spine (ASIS)
• D) Level of the pubic symphysis

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Definitions:

Law of Size Constancy

The perceptual principle stating that our perceptions of the size of objects remain constant despite changes in the size of the images they cast on our retinas due to distance.

Visual Angle Theory

The concept that the perception of an object's size is determined by its visual angle and the distance from the observer.

Retinal Image Theory

The hypothesis that the retina captures visual images like a camera, which are then processed by the brain.

Perceptual Constancy

A feature of perception in which physical objects are perceived as unvarying and consistent despite changes in their appearance or in the physical environment.