Essential Concepts of Radiologic Science Flashcards
This refers to anything that occupies space and has mass.
Matter
Fundamental building blocks of matter which are arranged in various complex ways.
Atoms
The distinguishing characteristic of matter. It is also the quantity of matter contained in any physical object.
It is described by its energy equivalence.
Mass
It is the force exerted on a body under the influence of gravity
Weight
What is the scientific unit of Mass?
kilograms (kg)
It is the ability to do work
Energy
The International System (SI) unit of measurement of energy.
joules (J)
Unit of measurement of energy used in radiology.
electron volt (eV)
the ability to do work by virtue
of position
Potential energy
the energy of motion
Kinetic energy
the energy released by a chemical
reaction
Chemical energy
An energy produced when an electron moves through an electric potential difference (voltage)
Electrical energy
Normal household electricity involves the movement of electrons through a copper
wire by an electric potential difference of how many volts (V).
110 V
the energy of motion at the
molecular level. It is the kinetic energy of molecules and
is closely related to temperature
Thermal energy (heat)
the energy that is contained within
the nucleus of an atom
Nuclear energy
The most important energy in radiology. It is the type of energy that is
used in x-ray imaging
Electromagnetic energy
Which of the following is/are not electromagnetic energy?
X-ray gamma ray radio waves sound microwaves ultrasound ultraviolet infrared, visible light
sound
ultrasound
What is the formula of Albert Einstein’s mass-energy equivalence?
E = mc^2
E = mc^2
E=?
m=?
c=?
E = energy m = mass c = velocity/speed of electromagnetic radiation (light)
It is the transfer of energy.
Energy emitted and transferred through space
Radiation
Term used to describe matter that intercepts and absorbs part or all of radiation
exposed or irradiated
any type of radiation that is capable of removing an orbital electron from
the atom with which it interacts
Ionizing radiation
This refers to the orbital electron and the atom from which it was separated from as a result of ionization.
ion pair
Which of the following is NOT true about ion pair?
A. This refers to the orbital electron and the atom from which it was separated from as a result of ionization.
B. The electron is a negative ion, and the remaining atom is a positive ion.
C. The electron is a negative ion, and the remaining atom can either be a positive or negative ion.
C. The electron is a negative ion, and the remaining atom can either be a positive or negative ion.
It is the removal of an electron from an
atom
Ionization
Which of the following is/are not considered as electromagnetic radiation with sufficient energy to ionize?
x-ray gamma ray alpha rays beta rays UV light
alpha rays
beta rays
Rationale: Alpha and beta rays have sufficient energy to ionize. However, they are particle-type and not electromagnetic radiation
