Rad midterm 1 tcdha (chapters 1-8, 17 & 19 (week 1-7) exam questions and answers .
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Course
Rad
Institution
Rad
Rad midterm 1 tcdha (chapters 1-8, 17 &
19 (week 1-7) exam questions and
answers .
The use of F-speed film instead of D-speed film reduces the absorbed dose
by % - ANSWER- 60%
What should you do prior to taking x-rays to protect your patient from
radiation exposure?
a. Proper film processin...
Rad midterm 1 tcdha (chapters 1-8, 17 &
19 (week 1-7) exam questions and
answers 2024-2025.
The use of F-speed film instead of D-speed film reduces the absorbed dose
by % - ANSWER- 60%
What should you do prior to taking x-rays to protect your patient from
radiation exposure?
a. Proper film processing
b. Proper prescribing of radiographs
c. A Lead Apron
d. A Thyroid Collar - ANSWER- b. Proper prescribing of radiographs
What does the Inherent filtration in dental x-ray tube head include? -
ANSWER- It includes filtration that takes places when the primary beam
passes through the glass window of the X-ray tube, the insulating oil, and
the tube head seal.
What controls the quantity of x-rays produced? - ANSWER- Milliamperage
(mA)
,In regard to increasing density: - ANSWER- An increase in either kVp
or mA will increase density.
According to inverse square law, the intensity of radiation is
proportional to the from the source of radiation. - ANSWER-
Inversely; square of the distance
Aluminium filters are used to remove -energy,
wavelength x-rays. - ANSWER- Low; Longer
What specific mechanism of radiation injury may result in the formation of
hydrogen peroxide when x-ray energy is absorbed by patients? -
, ANSWER- Free radical formation created by the ionization of water may
occur.
What is associated with long-term radiation effects? - ANSWER- Small
amounts of radiation absorbed over a long period.
Which of the following is the LEAST sensitive to x-rays?
a. Bone marrow
b. Salivary glands
c. Lymphoid tissue
d. Intestine - ANSWER- b. Salivary Glands
TRUE OR FALSE:
Risk estimates suggest (1) that death is more likely to occur from common
activities than from dental imaging procedures and (2) that caner is much
more likely to be unrelated to dental imaging radiation exposure. -
ANSWER- Both statements are TRUE!
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