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Board Prep > Principles Of Radiation Physics > Flashcards

Principles Of Radiation Physics Flashcards

1
Q

1 inch is how many centimeters?

A

2.54 centimeters

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2
Q

If a neutral atom has an atomic number of 10, how many electrons will it have?

A

10

(For an atom to be neutral, it had to have the same number of protons and electrons)

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3
Q

What type of radiation is produced when a high speed electron is slowed down or stopped?

A

Bremsstrahlung
(Brems=brakes)

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4
Q

What describes a proton ?

A

Mass and positive charge

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5
Q

What are by products if photoelectric absorption?

A
  1. Photoelectron
  2. Characteristic radiation
  3. Ionized atom
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6
Q

What is the unit of force?

A

Newton

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7
Q

In the normal diagnostic range, what is the wavelength range of the x-rays?

A

0.1 - 0.5 angstroms

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8
Q

How many electrons occupy the M she’ll of an atom?

A

18

F= 2(n squared)
Ex: KLMNOP 2(3^2) = 18 M=18

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9
Q

The mass number of an atom is equal to what?

A

The number of protons plus the number of neutrons 

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10
Q

Radiation that changes direction as it passes through a material is called what?

A

Scatter

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11
Q

What is the push or pull on an object called?

A

Force

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12
Q

Which of the following describes an atom that has lost one or more of its electrons?

A

Ion

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13
Q

How many pounds are in a kilogram?

A

2.2

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14
Q

Which of the following would be found in the nucleus of an atom?

A

Proton and Neutron

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15
Q

Ionization can result from which of the following interactions of radiation with tissue?

A

Photoelectric absorption

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16
Q

What are charged atoms called?

A

Ions

17
Q

The ability of a moving body to do work is called what?

A

Kinetic energy

18
Q

What is the formula for converting Fahrenheit to Celsius?

A

5/9 (F-32)

19
Q

Which of the following types of primary radiation cannot be produced at two potential is less than 70 keV

A

Characteristic

20
Q

What describes the radiation that makes up the x-ray beam after it has traversed the patient?

A

Remnant exit radiation

21
Q

What describes an electron?

A

Mass and negative charge

22
Q

What is the definition of power?

A

The rate at which work is done

23
Q

The atomic number of an atom is equal to which of the following

A

Number of protons

24
Q

Which of the following x-ray interactions occurs most often with extra energy is over 100 keV

A

Compton effect

25
Q

What type of primary radiation is produced when the x-ray tube voltage is below 70 lvl

A

Bremsstrahlung

26
Q

How many angstroms are in a meter?

A

10,000,000,000

27
Q

The probability a photo electric absorption occurring, increases with an increase in what?

A

Atomic number of material

28
Q

What is not a property of x-rays?

A

Constant energy

Board Prep (8 decks)

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