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Radiology Key Terms

Total questions: 49

Worksheet time: 25mins

Name
Class
Date
1.

Concept of radiation protection that states that all exposures should be kept "as low as reasonably achievable."

a)

Intensity

b)

Quantity

c)

ALARA

d)

Quality

2.

An electrically charged particle.

a)

electron

b)

Ion

c)

energy

d)

photon

3.

The positive electrode in the x-ray tube.

a)

anode

b)

cathode

c)

electron

d)

central ray

4.

The basic unit of matter.

a)

ion

b)

electron

c)

energy

d)

atom

5.

The total energy of the x-ray beam.

a)

Energy

b)

Intensity

c)

Quality

d)

Quantity

6.

"Braking radiation" The sudden deceleration of electrons as they interact with highly positive charged nuclei. The primary type of radiation produced in the dental xray tube head.

a)

Bremsstrahlung radiation

b)

Primary radiation

c)

secondary radiation

d)

scatter radiation

7.

The negative electrode in the x-ray tube.

a)

electron

b)

anode

c)

cathode

d)

ion

8.

X-rays at the center of the beam.

a)

primary beam

b)

central ray

c)

radiation

d)

energy

9.

A recording medium for an image, normally film, phosphor storage plate, or a digital sensor.

a)

digital imaging

b)

Image receptor

c)

sensor

d)

film

10.

High energy ionizing electromagnetic radiation.

a)

primary radiation

b)

Ionizing radiation

c)

X-radiation

d)

scatter radiation

11.

Anything that occupies space and has form or shape.

a)

Photon

b)

Matter

c)

Energy

d)

Atom

12.

Forms of waves of energy emission through space or material.

a)

Radiation

b)

Radiology

c)

Radiograph

d)

Dosimeter

13.

A form of secondary radiation that occurs when an x-ray beam as been deflected from its path by interaction with matter.

a)

primary radiation

b)

secondary radiation

c)

scatter radiation

d)

radiation

14.

A solid-state image sensor that contains a silicon chip with an electric circuit.

a)

Film

b)

Image receptor

c)

Sensor

d)

Image

15.

A measure of how well an image reproduces the fine details or outline of an object.

a)

Quality

b)

Quantity

c)

Intensity

d)

Sharpness

16.

x-radiation that is created when the primary beam interacts with matter.

a)

Secondary Radiation

b)

Primary Radiation

c)

Scatter Radiation

d)

Radiation

17.

Image produced on a photosensitive film by exposing the film radiation and then processing it.

a)

Sensor

b)

Radiology

c)

Radiograph

d)

Image

18.

The science or study of radiation as used in medicine.

a)

Radiology

b)

X-Radiation

c)

Radiography

d)

Radiation

19.

The mean of energy or penetrating ability of the x-ray beam.

a)

Matter

b)

Radiation

c)

Quantity

d)

Quality

20.

The number of x-rays produced in the dental unity.

a)

Quantity

b)

Quality

c)

Radiation

d)

X-Ray

21.

The overall darkness or blackness of an image.

a)

Sharpness

b)

Density

c)

Magnification

d)

Quality

22.

Differences in degrees of blackness on an image.

a)

Sharpness

b)

Contrast

c)

Magnification

d)

Distortion

23.

The portion of the x-ray unit that contains the master switch, the indicator light, the selector buttons, and the exposure buttons.

a)

Control Panel

b)

Extension Arm

c)

Tubehead

d)

Position Indicator Device

24.

The ability to do work.

a)

Matter

b)

Energy

c)

Atom

d)

Ion

25.

The process of recording images of the teeth and adjacent structures by exposure to x-radiation.

a)

Image

b)

Dental radiography

c)

Radiation

d)

Radiography

26.

A device used to detect and measure an accumulated dosage of radiation.

a)

Dosimeter

b)

Image receptor

c)

Dose

d)

Tungsten Target

27.

A filmless method of capturing an image and displaying it by using an image receptor, an electronic signal, and a computer to process and store the image.

a)

Digital Imaging

b)

Image

c)

x-ray

d)

Film

28.

Change in the size of an image caused by incorrect vertical angulation.

a)

Magnification

b)

Intensity

c)

Distortion

d)

Quality

29.

The amount of energy absorbed by tissues.

a)

dosimeter

b)

intensity

c)

Dose

d)

Image receptor

30.

A negatively charged particle in the atom.

a)

electron

b)

nucleus

c)

atom

d)

ion

31.

Flexible arm that is attached to the x-ray tube head.

a)

extension arm

b)

tube head

c)

control panel

d)

PID

32.

Effects of radiation that are passed on the future generations through genetic cells.

a)

Somatic Effects

b)

Genetic effects

c)

Radiation Effects

33.

Film-based or digitally produced recordings of anatomic structures.

a)

Image

b)

Dose

c)

Ion

d)

Photon

34.

A focal spot for the anode.

a)

Primary beam

b)

Tungsten Target

c)

Tube head

d)

Primary radiation

35.

The part of the x-ray unit that contains the x-ray tube, the high voltage and low voltage transformers, and insulating oil.

a)

Tube head

b)

Control Panel

c)

Extension Arm

d)

PID

36.

A flexible lead shield that is placed securely around the neck.

a)

Lead Apron

b)

Tube head

c)

Thyroid Collar

37.

Effects of radiation that cause illness and are responsible for poor health (such as cancer, leukemia, and cataracts) but are not passed on to offspring.

a)

Genetic Effects

b)

Somatic Effects

38.

Process by which electrons are removed from atoms, causing the harmful effects of radiation in humans.

a)

Radiation

b)

Ionization

c)

Genetic effects

d)

Magnification

39.

Radiation that produces ionization, resulting in harmful effects.

a)

Ionizing Radiation

b)

Scatter Radiation

c)

Secondary Radiation

d)

Primary Radiation

40.

Highest Voltage of x-ray tube used during an exposure.

a)

Radiation

b)

Milliampere

c)

Kilovoltage

41.

Time between exposure to ionizing radiation and appearance of symptoms.

a)

Somatic effects

b)

Latent period

c)

Genetic effects

42.

Device used to protect the reproductive and blood-forming tissues from scatter radiation.

a)

Thyroid collar

b)

Lead Apron

c)

Position Indicator Device

43.

The proportional enlargement of an object.

a)

Magnification

b)

Distortion

c)

Sharpness

44.

Components of the control panel

a)

Master switch, indicator light, selector buttons, exposure button

b)

Extension arm

c)

Tube Head

d)

Position Indicator Device

45.

A minute (tiny) bundle of pure energy that has no weight or mass.

a)

matter

b)

photon

c)

ion

d)

nucleus

46.

The most penetrating beam produced at the target of the anode.

a)

Secondary beam

b)

Primary beam

c)

Penumbra

47.

The blurred or indistinct area that surrounds an image

a)

Distortion

b)

Penumbra

c)

Sharpness

d)

Magnification

48.

One one-thousandth (1/1000) of an ampere; a unit of measurement used to describe the intensity of an electrical current.

a)

Milliampere

b)

Kilovoltage

49.

A device that measures exposure of personnel to ionizing radiation by measuring the intensity of visible light emitted from a crystal in the detector when heated. The intensity of light emitted is dependent upon the radiation exposure.

a)

Dosimeter

b)

Personal radiation monitoring badge