RHS Exam Study Guide

Getting ready for the Radiation Health and Safety (RHS) exam? Enhance your preparation with our free RHS Practice Test, designed to reinforce your knowledge. This valuable resource, offered by the Dental Assisting National Board (DANB), helps candidates showcase their proficiency in safe x-ray procedures. Test your understanding with our quiz today!

Edited by Me.bot Editorial Team Questions: 50 September 26, 2024

Character Test

1. The film emulsion is hardened during ______.

Development

Rinsing

Washing

Drying

2. A higher kilovoltage produces x-rays with:

Greater energy levels

Shorter wavelengths

More penetrating ability

Higher density

3. Which of the following is not found on the label of the film packet?

Film speed

Expiration date

Producer name

Number of films enclosed

4. Which of the following describes scatter radiation?

Radiation that exits the tubehead

Radiation that is deflected by interaction with matter

Radiation with low energy

None of the above

5. Identify the unit of measurement used to describe the amount of electric current through the x-ray tube.

Volt

Ampere

Kilovoltage

Watt

6. Total energy contained in the x-ray beam in a specific area at a given time is termed:

Beam quality

Intensity

Energy level

Milliamperage-second

7. The thermometer for manual processing should be placed in the _______.

Developer solution

Water bath

Anywhere in the darkroom

Fixer solution

8. At 68°F, what is optimal development time for manual film processing?

3 minutes

4 minutes

5 minutes

6 minutes

9. If kilovoltage is decreased with no other variations, the resultant image will:

Appear lighter

Appear darker

Remain the same

Appear blurry

10. Greatest contributor to artificial radiation exposure is:

Radioactive materials

Medical radiation

Consumer products

Nuclear fuel cycle

11. In manual film processing, optimal temperature for the developer solution is:

55°F

68°F

80°F

90°F

12. Which statement is incorrect?

Velocity is the speed of a wave

Wavelength is the distance between waves

Frequency is the number of wavelengths passing a point in time

Frequency and wavelength are directly related

13. Part of a processed radiograph appearing light or white is termed:

Radiolucent

Radiopaque

Dense

Low density

14. Wavelength determines __________.

The temperature of the cathode filament

Penetrating power of radiation

Speed of a wave

None of the above

15. To compensate for thick soft tissues and dense bones, increase:

Exposure time

Milliamperage

Operating kilovoltage peak

Any of the above

16. A radiograph with very dark and very light areas is said to have

High contrast

Low contrast

High density

Low density

17. Device used to hold extraoral film and intensifying screens is called:

Cassette

Screen holder

Film holder

Mount

18. The standard film size is:

Size 0

Size 1

Size 2

Size 4

19. Which beam alignment devices are recommended for the paralleling technique?

XCP Rinn

Snap-A-Ray

EndoRay

All of the above

20. Darkroom size is determined by all factors except:

Volume of radiographs

Processing equipment type

Space required for storage

Number of people using the room

21. Difference in blackness between adjacent areas on a radiograph is termed:

Density

Contrast

Clarity

Diagnostic quality

22. The term describing how dark and light areas are differentiated on an image is:

Contrast

Density

Intensity

Sharpness

23. All factors affect life of processing solutions except:

Number of films processed

Preparation care

Type of safelight used

Storage temperature

24. Any leaks of white light into the darkroom will cause:

Film fogging

Film reticulation

Overdeveloped films

All of the above

25. Which appears most radiolucent on a radiograph?

Bone

Enamel

Dentin

Air space

26. Increasing which factors will increase the intensity of the x-ray beam?

Kilovoltage and milliamperage

Milliamperage and exposure time

Exposure time and source to source distance

All of the above

27. Film speed is determined by the size of the silver halide crystals. True statement is:

Larger the crystals, faster the film speed

Larger the crystals, slower the film speed

Smaller the crystals, the faster the film speed

None of the above

28. Safelight must be placed minimum of what distance from the film?

2 feet

3 feet

4 feet

5 feet

29. A radiograph with many light and dark areas with few shades of gray has:

High density

Low density

High contrast

Low contrast

30. An example of a radiopaque structure seen on dental x-rays is:

Bone

Enamel

Dentin

All of the above

31. Replenisher is added to processing solution to:

Compensate for volume loss

Ensure uniform results

Compensate for oxidation

All of the above

32. Increasing milliamperage alone results in an image with:

Increased density

Decreased density

High contrast

Low contrast

33. Overall blackness of a dental radiograph is termed:

Density

Contrast

Opacity

Sharpness

34. Largest intraoral film size is:

Size 4

Size 3

Size 2

Size 1

35. Thermionic emission occurs at:

Negative cathode

Positive anode

Positive cathode

Negative anode

36. What year was the Radiation Control for Health & Safety Act established?

1922

1968

1991

1942

37. The latent period in radiation biology time is the time between:

Exposure to x-radiation and symptoms

Exposure of film and development

Subsequent doses of radiation

Cell rest and cell mitosis

38. Which statement is incorrect?

X-rays travel at the speed of light

X-rays have no charge

X-rays cannot be focused

X-rays do not cause ionization

39. Traditional unit for measuring x-ray exposure in air is termed:

The gray

Roentgen

The rem

Coulombs per kilogram

40. Unopened boxes of radiographic film should not be stored in the darkroom because:

Chemical fumes may fog the film

Continued exposure to safelight is harmful

Film could get exposed

Processing solutions could splash on film

41. What year did the FDA standardize all radiographic dental equipment?

1968

1974

1991

1954

42. The quality factor (QF) is determined by which unit?

Roentgen

Rad

Rem

Gray

43. Increasing milliamperage will cause

Increase in density; darker image

Increase in density; lighter image

Decrease in density; darker image

Decrease in density; lighter image

44. One exposure factor with direct influence on the contrast of a radiograph is

Operating kvp

Milliamperage

Exposure time

Subject thickness

45. Which statement is correct?

X-rays are electromagnetic radiation; visible light is not

X-rays have more energy than visible light

X-rays travel more slowly than visible light

X-rays have a longer wavelength than visible light

46. Increasing operating kilovoltage will cause

Increase in density; darker image

Decrease in density; lighter image

Increase in contrast; darker image

Decrease in contrast; lighter image

47. 4 basic components of film composition are _______.

Base, emulsion, adhesive, protective layer

Base, adhesive, silver halide crystals, overcoat

Support, crystals, gel, cover

Base, halide, adhesive, cover

48. Which act requires education and certification for radiographic equipment use?

Radiation Control for Health and Safety Act

Consumer-Patient Radiation Health and Safety Act

None of the above

49. Increasing exposure time will cause

Increase in density; image darker

Decrease in density; image lighter

Increase in contrast; image darker

Decrease in contrast; image lighter

50. Changing position-indicated device from 16 to 8 inches will result in intensity being:

Four times as intense

Twice as intense

Half as intense

One fourth as intense

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Frequently Asked Questions

What is the RHS Exam Study Guide?

The RHS Exam Study Guide is a comprehensive resource to help candidates prepare for the Radiation Health and Safety exam, which is conducted by the Dental Assisting National Board (DANB).

How does the RHS Exam Study Guide assist in exam preparation?

The RHS Exam Study Guide provides practice tests, essential concepts, and tips to master safe x-ray procedures, ensuring candidates are well-prepared for the DANB exam.

Who should use the RHS Exam Study Guide?

The RHS Exam Study Guide is ideal for individuals preparing to take the Radiation Health and Safety exam, especially those seeking to demonstrate their expertise in dental x-ray safety measures.

What topics are covered in the RHS Exam Study Guide?

The RHS Exam Study Guide covers a range of topics including radiation safety principles, proper x-ray techniques, patient protection, and regulatory compliance, all essential for the RHS exam.

Where can I access the RHS Exam Study Guide?

You can access the RHS Exam Study Guide online through various educational websites and resources dedicated to dental assistant certification exams.

RELATED QUIZZES

2025-02-06

RHS Exam Study Guide

Character Test

1. The film emulsion is hardened during ______.

2. A higher kilovoltage produces x-rays with:

3. Which of the following is not found on the label of the film packet?

4. Which of the following describes scatter radiation?

5. Identify the unit of measurement used to describe the amount of electric current through the x-ray tube.

6. Total energy contained in the x-ray beam in a specific area at a given time is termed:

7. The thermometer for manual processing should be placed in the _______.

8. At 68°F, what is optimal development time for manual film processing?

9. If kilovoltage is decreased with no other variations, the resultant image will:

10. Greatest contributor to artificial radiation exposure is:

11. In manual film processing, optimal temperature for the developer solution is:

12. Which statement is incorrect?

13. Part of a processed radiograph appearing light or white is termed:

14. Wavelength determines __________.

15. To compensate for thick soft tissues and dense bones, increase:

16. A radiograph with very dark and very light areas is said to have

17. Device used to hold extraoral film and intensifying screens is called:

18. The standard film size is:

19. Which beam alignment devices are recommended for the paralleling technique?

20. Darkroom size is determined by all factors except:

21. Difference in blackness between adjacent areas on a radiograph is termed:

22. The term describing how dark and light areas are differentiated on an image is:

23. All factors affect life of processing solutions except:

24. Any leaks of white light into the darkroom will cause:

25. Which appears most radiolucent on a radiograph?

26. Increasing which factors will increase the intensity of the x-ray beam?

27. Film speed is determined by the size of the silver halide crystals. True statement is:

28. Safelight must be placed minimum of what distance from the film?

29. A radiograph with many light and dark areas with few shades of gray has:

30. An example of a radiopaque structure seen on dental x-rays is:

31. Replenisher is added to processing solution to:

32. Increasing milliamperage alone results in an image with:

33. Overall blackness of a dental radiograph is termed:

34. Largest intraoral film size is:

35. Thermionic emission occurs at:

36. What year was the Radiation Control for Health &amp; Safety Act established?

37. The latent period in radiation biology time is the time between:

38. Which statement is incorrect?

39. Traditional unit for measuring x-ray exposure in air is termed:

40. Unopened boxes of radiographic film should not be stored in the darkroom because:

41. What year did the FDA standardize all radiographic dental equipment?

42. The quality factor (QF) is determined by which unit?

43. Increasing milliamperage will cause

44. One exposure factor with direct influence on the contrast of a radiograph is

45. Which statement is correct?

46. Increasing operating kilovoltage will cause

47. 4 basic components of film composition are _______.

48. Which act requires education and certification for radiographic equipment use?

49. Increasing exposure time will cause

50. Changing position-indicated device from 16 to 8 inches will result in intensity being:

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36. What year was the Radiation Control for Health & Safety Act established?