RADT 1065 Unit V Review

Most classical scatter photons:

• are the result of the removal of an orbital electron

• are absorbed in the body.

• are transmitted through the body.

• become remnant radiation.

The probability of Compton scattering depends on the energy level of the incident x-ray photon.

• True

• False

Radiation interacting with air is more likely to be __, resulting in that area of the image being darker.

• absorbed

• transmitted

• attenuated

• scatter

Air is considered:

• radiopaque

• hard to penetrate

• radiolucent

• more likely to absorb radiation

The Compton scatter photon

• may exit the patient as part of the remnant radiation

• does not have enough energy to produce further interactions

• has enough energy to produce further interactions

After ejection from the atom’s nucleus, when the positron interacts with an electron

• an annihilation event occurs

• the electron and positron are both "destroyed"

• two x-ray photons are produced

• all of these occur

During a photoelectric interaction,

• an inner-shell electron is ejected

• an outer-shell electron is ejected

• no electrons are ejected

• electrons for all levels are ejected

Photoelectric interactions are more likely to occur in

• air

• soft tissue

• bone

• they occur equally in all types of tissue

To minimize occupational exposure, the technologist should

• stay in the room as long as possible

• wear protective apparel (lead aprons, gloves, etc.) when in the room during imaging

• stand close to the patient’s head

• take several repeat exposures

All Compton scatter photons travel in the direction of the image receptor.

• True

• False