Quiz # 1 RAD

Question 1

What is Radiology?

Answer 1

Uses x-rays to produce an image, as they pass through patient: size, shape, density and location of structure can be evaluated images can be made with film/cassettes

Question 2

What is diagnostic imaging?

Answer 2

Radiology + CT scan, MRI, nuclear medicine, ultrasound, fluoroscopy - Term used to describe all imaging used in veterinary medicine

Question 3

Radiation

Answer 3

Process in which energy is propagated through space and matter 2 kinds:
1.Corpuscular
2.Electromagnetic

Question 4

1. Corpuscular radiation

Answer 4

radiation consisting of particles of matter
E.xs. alpha particles (helium) beta particles (nuclear) This kind of radiation can collide with anything

Question 5

2. Electromagnetic radiation

Answer 5

radiation consisting of electromagnetic waves; apart of the electromagnetic spectrum (consists of radio, TV, X-rays and Gamma rays, ect.)

Question 6

Wavelength

Answer 6

location in the spectrum id determines by wavelength -> short Vs. long
Short wavelengths: X-rays and Gamma rays
Long wavelengths: TV, Radio, Visible light, and Microwaves

Question 7

Energy

Answer 7

Energy content -> High Vs. Low
High energy: x-rays and gamma rays
Low energy: TV, radio, visible light and microwaves

Question 8

Wavelength Vs. Energy content

Answer 8

-as the wavelength decreases or shortens the energy content increases
-as the wavelength increases or lengthens the energy content decreases

Question 9

Ionizing radiation

Answer 9

Radiation that contains high energy and short wavelengths capable of penetrating and causing damage to biological tissues (removes outer electrons from atom)
E.x. Gamma rays and X-rays (high energy, short wavelengths)

Question 10

Non-ionizing radiation

Answer 10

Radiation that has long wavelengths and low energy that does not have enough energy to remove electrons from atom
E.x. TV, radio, microwaves and visible light (low energy, long wavelengths)

Question 11

Ionization

Answer 11

A process in which an outer electron (-‘ly charged) is removed from the atom is lefts +’ly charged -> releases energy in the form of electron volts

Question 12

Photon

Answer 12

bundles of electromagnetic radiation- smallest bundle of EM energy, may also be called a quantum. photons of diff EM radiation differ in energy content.
EC /\ traveling from radio waves(long WVL) through the spectrum to Gamma rays (short WVL) (contains most energy).
/\ E photon - short WVL, /\ energy. e.x. X-rays
\/ E photon- long WVL, \/ energy. e.x. radio waves

Question 13

Atoms

Answer 13

Smallest particle of matter that has the properties of an element. Consists of proton, neutrons and electrons

Question 14

3 types of ionizing radiation

Answer 14

Gamma: high energy in the form of protons(pure energy) - high energy and short wavelengths
Beta particles: Nuclear radiation - high-speed electrons
Alpha particles: helium - 2 protons and 2 neutrons (hazard if inhaled)

Question 15

physical properties of x- rays

Answer 15

-Travels at the speed of light
-Travels in a straight line
-Makes some substances glow
-Produces an invisible image on x-ray film that can be made visible by processing film
-Penetrates living tissue and
causes biological change in living tissue