VCU Dental Radiation Safety Certification Exam Questions and Answers
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Course
VCU 2025
Institution
VCU 2025
VCU Dental Radiation Safety Certification
Exam Questions and Answers
Who discovered X-Rays? - ANSWER-Wilhelm Roentgen
When did Wilhelm Roentgen discover X-Rays? - ANSWER-November 8th 1895
Did Wilhelm Roentgen discover X-Rays on purpose? - ANSWER-No, it was by accident
What was the first X-Ray ...
X-Ray tubes have three main parts: - ANSWER✔✔-Cathode, Anode, and a Pyrex Glass Tube
Cathode: - ANSWER✔✔-A) Source of electrons and negatively charged
B) contains a filament which, when heated, spews off electrons.
Anode: - ANSWER✔✔-A) Attracts the electrons at a great speed, known as the "accelerator". Positively
charged; attract the negatively charged electrons, which gather speed as they race from cathode to
anode.
B) contains a "target" (focal spot) which the electrons smash in to, releasing their energy as 1% radiation
and 99% heat.
Pyrex Glass Tube - ANSWER✔✔-Surrounds the anode and cathode. Maintains a vaccuum which prevents
air from interfering with the traveling electrons.
Radiobiology - ANSWER✔✔-the field of clinical and basic medical sciences that involves the study of the
action of ionizing radiation on living things, especially health effects of radiation.
What are the three possible types of interaction of X-Rays with matter? - ANSWER✔✔-Scatter,
Absorption, and Transmission
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