Radiology Basics Quiz

Who discovered X-rays?

• Albert Einstein

• W. C. Roentgen

• Marie Curie

• Isaac Newton

What material is primarily used in the X-ray tube for its electrodes?

• Aluminum

• Copper

• Tungsten

• Lead

What does increasing the kVp in an X-ray machine do?

• Reduces the exposure time

• Increases subject contrast

• Increases the energy of the electrons

• Decreases the energy of the X-rays

What is the effect called when X-ray intensity is greater at the cathode end?

• Radiographic Contrast

• Inverse Square Law

• Heel Effect

• Automatic Exposure Control

What does mAs stand for in radiology?

• Milliamperes per second

• Megaamperes per second

• Milliamperes multiplied by seconds

• Millivolts and seconds

What is the purpose of a grid in radiology?

• To reduce film contrast

• To enhance image brightness

• To increase the exposure time

• To control scattered radiation

What does optical density refer to in radiography?

• The amount of blackness of the film

• The clarity of the image

• The contrast between different tissues

• The exposure time required

What happens to subject contrast when kVp is increased?

• It remains the same

• It becomes unpredictable

• It decreases

• It increases

What is the primary function of the cathode in an X-ray tube?

• To produce X-rays

• To emit electrons

• To absorb radiation

• To generate high voltage

What is the grid ratio in radiology?

• The ratio of cathode to anode voltage

• The ratio of film contrast to subject contrast

• The ratio of X-ray exposure to film development time

• The ratio of the height of lead strips to the width of spacers