The Use of the 80 to 90 KV (Analog) Technique

question 21

Multiple Choice

The use of the 80 to 90 kV (analog) technique (as opposed to 70 kV) with a corresponding mAs change for an AP pelvis projection will result in:

• A)increased radiographic contrast.
• B)improved spatial resolution.
• C)reduction in gonadal dose.
• D)none of the above; the difference is not measurable.

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Definitions:

Foramen Ovale

An opening in the heart's atrial septum present in the fetus, which normally closes soon after birth.

Pulmonary Trunk

The major blood vessel that carries blood from the right ventricle of the heart to the lungs for oxygenation.

Aortic Semilunar Valve

A valve in the heart located between the left ventricle and the aorta that prevents blood from flowing back into the heart.

Mitral Valve

A valve in the heart that lets blood flow from the left atrium to the left ventricle, preventing backflow.