If the IR and Wrist Are Elevated for the PA

question 122

Multiple Choice

If the IR and wrist are elevated for the PA axial projection of the wrist (Stecher method) ,the central ray orientation is:

• A) perpendicular to the IR.
• B) 20 degrees toward the elbow.
• C) 20 degrees toward the hand.
• D) variable according to the degree of IR/part elevation.

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Definitions:

Percentile

A measure indicating the value below which a given percentage of observations in a group of observations falls.

Normal Random Variable

A variable whose values are distributed according to a normal distribution.

Mean

A measure of central tendency that is calculated by summing the values in a dataset and dividing by the number of values.

Normal Curve

A bell-shaped curve that depicts the distribution of data points in a way where most of the observations cluster around the mean, showing the properties of symmetry and asymptotic tails.