Radiology Key Terms

Concept of radiation protection that states that all exposures should be kept "as low as reasonably achievable."

• Intensity

• Quantity

• ALARA

• Quality

An electrically charged particle.

• electron

• Ion

• energy

• photon

The positive electrode in the x-ray tube.

• anode

• cathode

• electron

• central ray

The basic unit of matter.

• ion

• electron

• energy

• atom

The total energy of the x-ray beam.

• Energy

• Intensity

• Quality

• Quantity

"Braking radiation" The sudden deceleration of electrons as they interact with highly positive charged nuclei. The primary type of radiation produced in the dental xray tube head.

• Bremsstrahlung radiation

• Primary radiation

• secondary radiation

• scatter radiation

The negative electrode in the x-ray tube.

• electron

• anode

• cathode

• ion

X-rays at the center of the beam.

• primary beam

• central ray

• radiation

• energy

A recording medium for an image, normally film, phosphor storage plate, or a digital sensor.

• digital imaging

• Image receptor

• sensor

• film

High energy ionizing electromagnetic radiation.

• primary radiation

• Ionizing radiation

• X-radiation

• scatter radiation