What CR Centering Should Be Used for a Dorsal Decubitus

question 22

Multiple Choice

What CR centering should be used for a dorsal decubitus projection of the abdomen?

• A) At level of umbilicus
• B) 2 inches (5 cm) above iliac crest
• C) At level of iliac crest
• D) Place bottom of cassette at level of ASIS

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Definitions:

Specific Gravity

The ratio of the density of a substance to the density of a reference substance, typically water.

Substances Dissolved

Materials that have become integrated into a liquid phase, turning into a solution without retaining their original state.

Renal Failure

A medical condition in which the kidneys lose the ability to filter waste and excess fluids from the blood.

Urethral Obstruction

A blockage in the urethra, the tube that carries urine from the bladder out of the body, which can cause difficulty urinating or a complete inability to urinate.