FREE RADIOLOGY AND STUDY GAMES ABOUT RAD

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FREE RADIOLOGY AND STUDY GAMES ABOUT RAD

PROTECTION EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -47 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: During _______ radiation, a projectile electron interacts with an inner shell electron.

Answer:

characteristic Question 2: During ___ ____, the filament on the cathode heats up and releases a cloud of electrons.

Answer:

thermionic emission Question 3: In pair production, incoming photon interacting with the nucleus must have an energy above ____MeV.

Answer:

1.02 Question 4: Compton scatter is a process in which a photon is _____ absorbed by an outer-shell electron.

Answer:

partially

Question 5: The Compton photon has ___ energy, a ___ wavelength and ____ frequency than the incident photon.

Answer:

less;longer;lower

Question 6: Bremsstrahlung radiation is also known as ____ radiation.

Answer:

braking (travel at half the speed of light)

Question 7: At ____ kVp, 67% are compton interactions and 33% are PE.

Answer:

90 Question 8: ________ dose (D) is the amount of energy received by the atoms of the patients body.

Answer:

Absorbed

Question 9: ____ radiation goes in all different directions from the patient.

Answer:

Isotropic Question 10: A chemical with an increased binding energy (Lead, barium) will have attenuate ____ photons.

Answer:

more Question 11: _____ radiation is the radiation exiting other than through the window.

Answer:

Leakage

Question 12: An increase in kVp will cause an increase in ____ radiation.

Answer:

scatter

Question 13: After the nucleus absorbs the electron in photodisintegration, the nucleus becomes ____ and begins to emit neutrons, protons, alpha particles and or gamma rays.

Answer:

radioactive

Question 14: kVp controls ____ or penetrating power.

Answer:

quality Question 15: Pair productin does not occure significantly until an energy of ___ MeV has been reached.

Answer:

10

Question 16: Primary beam is the radiation that passes through the ____.

Answer:

window

Question 17: Photodisintegration occurs above ____ MeV.

Answer:

10

Question 18: The photoelectric effect is also known as ______ radiation.

Answer:

fluorescent

Question 19: At the target, ___% is heat and _% is the x-ray.

Answer:

99;1 Question 20: During the _____ effect, all the energy of the incoming photon is totally transferred to the K or L-shell electron.

Answer:

Photoelectric

Question 21: During photodisintegration, a high energy electron (radiation therapy) is absorbed by the _____.

Answer:

nucleus Question 22: Attenuation is the ___ in the number of photons as they pass through matter.

Answer:

reduction

Question 23: mAs is the time + ____ of photons directed at the patient.

Answer:

quantity

Question 24: At ___ kVp, 15% of x-rays are characteristic radiation.

Answer:

100

Question 25: X-rays travel at the speed of light, ____ miles/second.

Answer:

186,000

Question 26: At ___ kVp, the majority of x-rays are Brems.

Answer:

70 Question 27: During the ____ ____, matter is converted back into energy as a result of a positron combining with a negative electron, which creates two photons moving in opposite directions.

Answer:

annihilation reaction

Question 28: Primary radiation is also known as ___ radiation.

Answer:

direct