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Radiographic Physics & Imaging > Chapter 1 and 2 worksheet > Flashcards

Chapter 1 and 2 worksheet Flashcards

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1
Q

Energy is defined as:

A

The ability to do work.

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2
Q

Which of the following examples best represents energy?

A snowman, a bouncing ball, anode mass, the metal plates in a battery, the terminals of a battery.

A

Bouncing ball.

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3
Q

In Einstein’s famous E=mc^2 equation, c stands for what?

A

The speed of light.

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4
Q

Radiation is:

A

Energy transferred.

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5
Q

The roentgen relates to which of the following?

A

Ions produced in the air.

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6
Q

Which of the following is an example of electromagnetic radiation?

A

Visible light.

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7
Q 
X-rays are *most* like which of the following?
Alpha rays
Beta rays
Diagnostic ultrasound
Gamma rays
Radio waves
A

Gamma rays

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8
Q

Which of the following is the larger source of human exposure to man-made radiation?
Cosmic rays
Medical diagnostic X-rays
nuclear power-generating stations
Radioactive fallout
Radioactive materials in consumer products

A

Medical diagnostic xrays

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9
Q 
Which of the following results in the highest annual radiation dose?
Cosmic rays
Diagnostic X-rays
Nuclear power
Radiation from inside the earth
A

Radiation from inside the earth.

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10
Q 
The rad is related most closely to which of the following?
Dose equivalent
Radiation exposure
The gray
The joule
The sievert
A

The gray

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11
Q 
Which of the following is ionizing electromagnetic radiation?
Beta rays
Gamma rays
Microwaves
Radio waves
Ultrasound
A

Gamma rays

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12
Q 
Which of the following is a unit of mass?
Joule
Kilogram
mrad
Pound
Volt
A

Kilogram

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13
Q

What was the device with which Roentgen discovered X-rays?

A

Crookes tube

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14
Q

The phosphor that Roentgen used in early experiments with X-rays was which of the following?

A

Barium Platinocyanide

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15
Q

How are X-ray tube voltages measured?

A

Kilovolt

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16
Q

Which of the following early pioneers developed the fluoroscope?

A

Thomas Edison

17
Q

Which of the following is the type of X-ray tube that is used today?

A

Coolidge tube

18
Q

The Bucky grid, which was introduced in 1921, does what?

A

Improves image contrast

19
Q

What are the two simple, general types of X-ray imaging procedures?

A

Radiographic and fluoroscopic

20
Q

Which of the following provides dynamic X-ray images?

A

Fluoroscopy

21
Q

Collimation and filtration do what?

A

Reduce patient dose

22
Q 
One of the cardinal principles of radiation protection states that the radiologic technologist should minimize which of the following?
Distance
kVp
mAs
Shielding
Time
A

Time

23
Q

Which of the following will reduce personnel exposure the most?
Collimation of the X-ray beam
Filtration of the X-ray beam
Recording of fluoroscopy
A high kVp technique
Use of protective barriers for radiologic technologists

A

Use of protective barriers for radiologic technologists

24
Q

After termination of an X-ray exposure:

A

No more X-rays are emitted.

25
Q

During fluoroscopy, what should the radiologic technologist always do?

A

Wear protective apparel

26
Q 
Generally, X-ray examinations are reserved for which of the following?
Asymptomatic patients
Older patients
Patients who are not pregnant
Symptomatic patients
xray personnel
A

Symptomatic patients

27
Q

Which of the following is the principal reason to avoid repeat examination?
The cost of the procedure is doubled
The images may be confused
The patient is inconvenienced
The patient receives twice the radiation dose
The technologist’s workload is doubled

A

The patient receives twice the radiation dose.

28
Q

The normal SID for an upright chest radiograph is 180cm. This is equivalent to:

A

1.8m

29
Q

A fluoroscopic examination is conducted at 1.5 A. This is equivalent to:

A

1500mA

30
Q

A radiographic exposure requires 400 ms. This is also:

A

.4s

31
Q 
Which of the following is a unit of energy?
Gray
Joule
Newton
Rad
Sievert
A

Joule

32
Q

The radiologic unit milliampere-second (mAs) is actually a measure of:

A

Number of electrons

33
Q 
A radiation monitoring report would express a radiologic technologist's does equivalent in which of the following?
Curie
Gray
Rad
Rem
Roentgen
A

Rem

Radiographic Physics & Imaging (15 decks)

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