Essential Concepts of Radiologic Science Flashcards Preview

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Flashcards in Essential Concepts of Radiologic Science Deck (26)
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1
Q

This refers to anything that occupies space and has mass.

A

Matter

2
Q

Fundamental building blocks of matter which are arranged in various complex ways.

A

Atoms

3
Q

The distinguishing characteristic of matter. It is also the quantity of matter contained in any physical object.

It is described by its energy equivalence.

A

Mass

4
Q

It is the force exerted on a body under the influence of gravity

A

Weight

5
Q

What is the scientific unit of Mass?

A

kilograms (kg)

6
Q

It is the ability to do work

A

Energy

7
Q

The International System (SI) unit of measurement of energy.

A

joules (J)

8
Q

Unit of measurement of energy used in radiology.

A

electron volt (eV)

9
Q

the ability to do work by virtue

of position

A

Potential energy

10
Q

the energy of motion

A

Kinetic energy

11
Q

the energy released by a chemical

reaction

A

Chemical energy

12
Q

An energy produced when an electron moves through an electric potential difference (voltage)

A

Electrical energy

13
Q

Normal household electricity involves the movement of electrons through a copper
wire by an electric potential difference of how many volts (V).

A

110 V

14
Q

the energy of motion at the
molecular level. It is the kinetic energy of molecules and
is closely related to temperature

A

Thermal energy (heat)

15
Q

the energy that is contained within

the nucleus of an atom

A

Nuclear energy

16
Q

The most important energy in radiology. It is the type of energy that is
used in x-ray imaging

A

Electromagnetic energy

17
Q

Which of the following is/are not electromagnetic energy?

X-ray
gamma ray
radio waves
sound
microwaves 
ultrasound
ultraviolet
infrared,
visible light
A

sound

ultrasound

18
Q

What is the formula of Albert Einstein’s mass-energy equivalence?

A

E = mc^2

19
Q

E = mc^2

E=?
m=?
c=?

A
E = energy
m = mass
c = velocity/speed of electromagnetic radiation (light)
20
Q

It is the transfer of energy.

Energy emitted and transferred through space

A

Radiation

21
Q

Term used to describe matter that intercepts and absorbs part or all of radiation

A

exposed or irradiated

22
Q

any type of radiation that is capable of removing an orbital electron from
the atom with which it interacts

A

Ionizing radiation

23
Q

This refers to the orbital electron and the atom from which it was separated from as a result of ionization.

A

ion pair

24
Q

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.

A

C. The electron is a negative ion, and the remaining atom can either be a positive or negative ion.

25
Q

It is the removal of an electron from an

atom

A

Ionization

26
Q

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
A

alpha rays
beta rays

Rationale: Alpha and beta rays have sufficient energy to ionize. However, they are particle-type and not electromagnetic radiation