A+ Graded Paper
RTE 1000 Final Exam 2025 | 100% Verified
Questions & Correct Answers with In-Depth
Explanations
Questions and Mark scheme
Version: Final 1.1
, What are the cardinal principles of radiation protection? - ✔✔Time, distance, and shielding.
What is kVp? - ✔✔Kilovolt peak, a measure of the maximum voltage applied across the X-ray tube.
What is the purpose of using the grid? - ✔✔To reduce scatter radiation and improve image quality.
What is REM? - ✔✔Roentgen Equivalent Man, a unit of measurement for radiation dose equivalent.
What is needed to create an X-ray? - ✔✔A source of electrons, a target material, and a high voltage.
What is photoelectric interaction? - ✔✔An interaction where an X-ray photon is completely absorbed by an inner shell
electron.
What is Compton interaction? - ✔✔An interaction where an X-ray photon is scattered by an outer shell electron.
What is ALARA? - ✔✔As Low As Reasonably Achievable, a principle to minimize radiation exposure.
What is the law of Tribondeau? - ✔✔It states that the sensitivity of cells to radiation is related to their reproductive
activity.
What are the early symptoms of acute radiation damage? - ✔✔Nausea, vomiting, fatigue, and skin burns.
What material shields the patient from radiation? - ✔✔Lead or other dense materials.
What is direct action and indirect action? Which is more harmful? - ✔✔Direct action involves radiation interacting
directly with DNA, while indirect action involves radiation interacting with water molecules to produce free radicals;
direct action is generally more harmful.
What is the acute radiation syndrome/effects of radiation exposure? - ✔✔A collection of symptoms resulting from high
doses of radiation exposure, including stages of prodromal, latent, and manifest illness.
RTE 1000 Final Exam 2025 | 100% Verified
Questions & Correct Answers with In-Depth
Explanations
Questions and Mark scheme
Version: Final 1.1
, What are the cardinal principles of radiation protection? - ✔✔Time, distance, and shielding.
What is kVp? - ✔✔Kilovolt peak, a measure of the maximum voltage applied across the X-ray tube.
What is the purpose of using the grid? - ✔✔To reduce scatter radiation and improve image quality.
What is REM? - ✔✔Roentgen Equivalent Man, a unit of measurement for radiation dose equivalent.
What is needed to create an X-ray? - ✔✔A source of electrons, a target material, and a high voltage.
What is photoelectric interaction? - ✔✔An interaction where an X-ray photon is completely absorbed by an inner shell
electron.
What is Compton interaction? - ✔✔An interaction where an X-ray photon is scattered by an outer shell electron.
What is ALARA? - ✔✔As Low As Reasonably Achievable, a principle to minimize radiation exposure.
What is the law of Tribondeau? - ✔✔It states that the sensitivity of cells to radiation is related to their reproductive
activity.
What are the early symptoms of acute radiation damage? - ✔✔Nausea, vomiting, fatigue, and skin burns.
What material shields the patient from radiation? - ✔✔Lead or other dense materials.
What is direct action and indirect action? Which is more harmful? - ✔✔Direct action involves radiation interacting
directly with DNA, while indirect action involves radiation interacting with water molecules to produce free radicals;
direct action is generally more harmful.
What is the acute radiation syndrome/effects of radiation exposure? - ✔✔A collection of symptoms resulting from high
doses of radiation exposure, including stages of prodromal, latent, and manifest illness.
