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Radiation Physics: Chapter One

Terms in this set (50)

X-rays were discovered:
November 8, 1895
Barium platiinocyanide was the material in Dr. Roentgen's laboratory that:
fluoresced when the cathode ray tube was energized
The first radiograph produced by Dr. Roentgen was of:
his wife's hand
Acute radiodermatitis was:
A)
the radiation burn resulting from excessive exposure to x-rays

B)
common among early patients and operators of x-ray equipment

C)
a delayed reaction to excessive x-ray exposure


D)
all of these
Who brought attention to the dangers of x-rays?
Thomas Edison
An example of how x-rays were used for entertainment or business gain in a dangerous manner was the:
fluoroscopic shoe filter
Mass, length, and time are considered:
fundamental quantities
Velocity, acceleration, and work are:
derived quantities
Exposure, dose, and dose equivalent are:
radiologic quantities
The metric system is also known as the:
System International (SI)
In the SI system, the unit of measure for mass is:
kilogram
In the SI system, the unit of measure for length is:
meter
In the SI system, the unit of measure for time is:
second
_________ is equal to distance traveled divided by the time needed to cover that distance.
velocity
Newton is the unit of measure of:
force
Watt is the unit of measure of:
power
Joule is the unit of measure of:
work
Fd (force x distance) is the formula to determine:
work
Work/time is the formula to determine:
power
The formula ma (mass x acceleration) is for:
force
What is the velocity of a javelin that travels 45 meters in 3 seconds?
15 m/s
The property of an object with mass that resists a change in its state of motion is:
inertia
The principle of inertia was first described by:
Sir Isaac Newton
Newton's first law of motion said that, unless acted on by an external force, an object at rest:
will stay at rest
The ability to do work is:
energy
Energy in a stored state is:
potential energy
Kinetic energy is:
energy of motion (expendable)
Electromagnetic, chemical, electrical, and thermal are all types of:
energy
Einstein's formula, E = MC2, demonstrates the relationship between:
matter and energy
The radiologic unit that quantifies radiation intensity is the:
Roentgen
The radiologic unit that quantifies the biological effect of radiation on humans and animals is the:
rad
The radiologic unit that quantifies occupational exposure or dose equivalent is the:
rem
The ____ is the SI unit equivalent to the rad.
gray
1 rad = ________
10^-2 Gy
The _____ is the SI unit equivalent to the rem.
Sievert
I Roentgen equals ___________.
2.58 x 10^-4 C/kg
To help dissipate (remove) the heat produced during an x-ray production, the x-ray tube housing is filled with:
oil
The purpose of the mirror inside the collimator is to:
reflect the light source
Lead shutters are part of the:
Collimator
The device that is located just under the x-ray table and holds the image receptor in place is the:
bucky assembly
Mass does not change with gravitational force.
True
When 3 kilograms of frozen water is melted, it produces 3 kilograms of water.
True
Weight, measured in pounds, is not affected by gravitational force.
False
__________ is energy in motion (the act of doing work)
Kinetic
The ________ is the traditional unit of radiation exposure or intensity
Roentgen
The _____ is the traditional unit of dose equivalent
rem
The _____ is the traditional unit of radiation absorbed dose
rad
Newton is the unit measure of
Force
Joule is the unit measure of
work
Watt is the unit measure of
power
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