Photoelectric Interactions in Radiography

The video explains how radiographic images are formed by X-ray photons interacting with body atoms. It covers photon transmission, absorption, and scattering, focusing on photoelectric interactions where photons transfer energy to electrons, causing ionization. The characteristic cascade process is described, where electron movement stabilizes the atom. The video also discusses energy conservation in photon production and why photoelectric interactions are more likely in bone due to its density and atomic number.

What is the primary result of X-ray photons interacting with body atoms?

• Emission of visible light

• Formation of a radiographic image

• Creation of a magnetic field

• Generation of sound waves

Which type of interaction describes photon absorption at the atomic level?

• Rayleigh scattering

• Pair production

• Photoelectric interaction

• Compton scattering

What happens to an electron during a photoelectric interaction?

• It emits a photon and changes orbit

• It is ejected from its orbit

• It absorbs energy and remains in its orbit

• It splits into two smaller particles

Which electron shell is typically involved in filling the vacancy during a photoelectric interaction?

• N shell

• O shell

• M shell

• L shell

What is the name of the electron that is ejected during a photoelectric interaction?

• Beta electron

• Photoelectron

• Gamma electron

• Alpha electron

What is the term for the movement of electrons to fill vacancies in electron shells?

• Electron drift

• Quantum leap

• Characteristic Cascade

• Photon emission

What is produced to satisfy the law of conservation of energy during a characteristic cascade?

• A gamma ray

• A characteristic X-ray photon

• A beta particle

• A neutron

Why are photoelectric interactions more likely to occur in bone?

• Due to its low atomic number

• Because of its high density and atomic number

• Because of its high water content

• Due to its flexibility

What is the appearance of bony tissue in radiographs due to photoelectric interactions?

• White

• Gray

• Transparent

• Black

What happens to X-ray photons that are completely absorbed by bone?

• They do not reach the image receptor

• They are converted into sound

• They are scattered in a new direction

• They reach the image receptor