Ch. 1 & 9

Question 1

T/F - X-rays are classified as non-ionizing radiation

Answer 1

False

Question 2

Ionization is the process by which a neutral atom___

Answer 2

gains or loses an electron

Question 3

T/F - Ionization has the ability to disrupt the composition of matter and life processes

Answer 3

True

Question 4

X-rays have the same energy range as:

Answer 4

Gamma rays

Question 5

All of these imaging modalities use ionizing radiation except for:

Answer 5

Ultrasound and MRI

Question 6

X-rays were discovered on:

Answer 6

November 8, 1895

Question 7

The first radiograph was of who’s hand.

Answer 7

Roentgen’s wife’s hand

Question 8

X-rays are produced when ____ moving at a very high rate of speed are stopped abruptly

Answer 8

electrons

Question 9

Nuclear energy is emitted from the ___ of the atom

Answer 9

nucleus

Question 10

Roentgen painted a material on to a screen and left it in a room to be exposed to x-rays. The result was the material began to fluoresce. What was that material?

Answer 10

Barium platinocyanide

Question 11

T/F - The inverse square law states that the intensity of a beam of radiation is inversely proportional to the square of the distance from the source. ( So by doubling the distance between radiographer and x-ray source, you reduce the exposure by a factor of 4)

Answer 11

True

Question 12

T/F - The degree of beam attenuation depends on tissue characteristics

Answer 12

True

Question 13

T/F - Turning on the power to an x-ray machine activates x-ray production

Answer 13

False

Question 14

T/F - The fluoroscope produces a static image

Answer 14

False - Dynamic images

Question 15

T/F - A secondary protective barrier is designed to be struck by radiation scatter

Answer 15

True

Question 16

Lead shielding should be used when the gonadal area is within ___ of the primary beam

Answer 16

4 to 5 cm

Question 17

Diagnostic imaging of the breast is called mammography

Answer 17

mammography

Question 18

Measures the amount of energy absorbed in 1g of absorbing material

Answer 18

Absorbed dose - Gray

Question 19

T/F - Every pregnant radiographer or student has the right to choose whether to declare her pregnancy

Answer 19

True

Question 20

Expresses the biological effect of being exposed to same quantity of different radiations

Answer 20

Equivalent dose - Sievert

Question 21

The radiation a person receives from the sun (cosmic radiation) is categorized as:

Answer 21

natural background radiation

Question 22

With regard to the ALARA principal, the responsibility of the radiographer is to:

Answer 22

keep radiation exposure at the lowest levels possible

Question 23

The dose equivalent limits for radiation workers is based on the radiation received from what sources?

Answer 23

occupational exposure

Question 24

The ability to do work defines:

Answer 24

Energy

Question 25

The material commonly used for shielding against radiation exposure in protective aprons and gloves is:

Answer 25

lead

Question 26

The radiographic beam should be collimated so that it is ____ the image receptor

Answer 26

no larger than

Question 27

Radiography images what part of the body?

Answer 27

all parts

Question 28

What is the principal of the ALARA concept?

Answer 28

For the radiographer to keep patient and occupational exposure as low as reasonably achievable

Question 29

For a pregnant radiographer who declares her pregnancy to the employer, a second personnel monitoring device is provided. The purpose of the additional monitor is to ensure that the monthly equivalent dose to the embryo or fetus does not exceed _______mSv.

Answer 29

0.5

Question 30

The film record produced to visualize the internal structures of the body is termed a:

Answer 30

radiograph

Question 31

When laser light stimulates the sensing material in an optically luminescence dosimeter (OSL), the:

Answer 31

material luminesces in proportion to the amount of radiation exposure received

Question 32

The individual packets of energy contained in the primary beam are called:

Answer 32

photons

Question 33

Radiation that is non-diagnostic and provides no useful information is called:

Answer 33

scatter radiation

Question 34

The x-ray beam that exits the tube and before it enters the patient is called the __________________ beam

Answer 34

primary

Question 35

The beam that exits the patient is called:

Answer 35

remnant radiation

Question 36

The radiographer has control of which of the following technical factors?

Answer 36

mAs and kVp

Question 37

The part of the radiographic system that produces the x-rays is the:

Answer 37

x-ray tube

Question 38

T/F - Milliamperage ( mA)- controls the electrical current that is applied to the filament?

Answer 38

True

Question 39

Which of the following is an advisory group that helps establish radiation protection standards?

Answer 39

NCRP

Question 40

The Diagnostic Imaging Modality that uses sound waves to produce images of internal structures of the body is called:

Answer 40

ultrasound

Question 41

According to the National Council on Radiation Protection and Measurement (NCRP), the annual (infrequent) exposure dose-limit for the general public is:

Answer 41

5 mSv

Question 42

used to measure equivalent dose

Answer 42

Sievert

Question 43

The greatest source of human-made ionizing radiation is:

Answer 43

medical and dental x-rays

Question 44

The anode is the ______________ terminal in the x-ray tube:

Answer 44

positive

Question 45

The tissue that is most dense in the human body is:

Answer 45

bone

Question 46

The imaging modality that uses ionizing radiation and visualizes the body in different planes is:

Answer 46

computed tomography (CT)

Question 47

Nuclear Medicine uses ___ radiation?

Answer 47

gamma

Question 48

Any worker when regularly exposed or likely to receive _____ or more of the effective dose limits must be monitored.

Answer 48

1/10

Question 49

Which radiation monitoring badge is the “most common”?

Answer 49

OSL - optically stimulated luminescence dosimeter