RHS EXAM LATEST
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
The maximum permissible dose (MPD) of ionizing radiation for occupational
exposure is
A. 5.0 rem per year.
B. 0.05 rem per year.
C. 0.5 rem per year.
D. 1.0 rem per year. - ANSWER-A. 5.0 rem per year.
Which of the following pathogens is NOT found in oral or respiratory secretions?
A. Mycobacterium tuberculosis
B. Hepatitis B virus
C. Flu virus
D. West Nile virus - ANSWER-D. West Nile virus
The most common reason for taking bitewing radiographs is to evaluate
A. occlusal caries.
B. incipient caries.
C. calculus.
D. interproximal caries. - ANSWER-D. interproximal caries.
END OF
PAGE 1
, RHS EXAM LATEST
How often should protective clothing be changed in an oral healthcare setting?
A. Twice daily
B. After each patient
C. Once weekly
D. When visibly soiled - ANSWER-D. When visibly soiled
Using the ALARA concept as a guideline for radiographs includes all of the
following EXCEPT
A. draping the patient with a thyroid collar.
B. using a circular PID.
C. draping the patient with a lead apron.
D. using a rectangular PID. - ANSWER-B. using a circular PID.
Which of the following errors occur when the vertical angulation is incorrect?
A. Cone cut
B. Blurred image
C. Elongation
D. Overlapping - ANSWER-C. Elongation
Which of the following was established to address the education and certification
of operators of radiographic equipment?
END OF
PAGE 2
, RHS EXAM LATEST
A. Radiation Control for Health and Safety
B. National Council on Radiation Protection and Measurements
C. Consumer-Patient Radiation Health and Safety Act
D. International Commission on Radiation Units and Measurements -
ANSWER-C. Consumer-Patient Radiation Health and Safety Act
Where is the most common area in the oral cavity for a dentigerous cyst?
A. Between the central incisors
B. Around the canines
C. Around the third molars
D. Between the premolars - ANSWER-C. Around the third molars
Which of the following measures the amount of radiation that reaches the surface
of the skin?
A. Dose rate
B. Quality factor
C. Mitotic activity
D. Roentgen - ANSWER-D. Roentgen
If there are no teeth to serve as guides, which of the following landmarks indicates
a maxillary molar area radiograph?
END OF
PAGE 3
, RHS EXAM LATEST
A. Tuberosity
B. Incisive foramen
C. Mental foramen
D. Internal oblique ridge - ANSWER-A. Tuberosity
Which of the following PID produces the greatest amount of secondary radiation?
A. Open-end lead-lined cylinder
B. Open-end lead-lined rectangular
C. Closed-end plastic cone
D. Closed-end aluminum cylinder - ANSWER-C. Closed-end plastic cone
The penetrating x-ray beam produced during dental radiography is called
A. characteristic radiation.
B. scatter radiation.
C. primary radiation.
D. secondary radiation. - ANSWER-C. primary radiation.
Which of the following protection techniques is used to minimize x-radiation
exposure to the operator?
A. Structural shielding
B. Wearing a lead line apron
END OF
PAGE 4
ANSWER ALL QUESTIONS IN THIS SECTION
QUESTION 1
The maximum permissible dose (MPD) of ionizing radiation for occupational
exposure is
A. 5.0 rem per year.
B. 0.05 rem per year.
C. 0.5 rem per year.
D. 1.0 rem per year. - ANSWER-A. 5.0 rem per year.
Which of the following pathogens is NOT found in oral or respiratory secretions?
A. Mycobacterium tuberculosis
B. Hepatitis B virus
C. Flu virus
D. West Nile virus - ANSWER-D. West Nile virus
The most common reason for taking bitewing radiographs is to evaluate
A. occlusal caries.
B. incipient caries.
C. calculus.
D. interproximal caries. - ANSWER-D. interproximal caries.
END OF
PAGE 1
, RHS EXAM LATEST
How often should protective clothing be changed in an oral healthcare setting?
A. Twice daily
B. After each patient
C. Once weekly
D. When visibly soiled - ANSWER-D. When visibly soiled
Using the ALARA concept as a guideline for radiographs includes all of the
following EXCEPT
A. draping the patient with a thyroid collar.
B. using a circular PID.
C. draping the patient with a lead apron.
D. using a rectangular PID. - ANSWER-B. using a circular PID.
Which of the following errors occur when the vertical angulation is incorrect?
A. Cone cut
B. Blurred image
C. Elongation
D. Overlapping - ANSWER-C. Elongation
Which of the following was established to address the education and certification
of operators of radiographic equipment?
END OF
PAGE 2
, RHS EXAM LATEST
A. Radiation Control for Health and Safety
B. National Council on Radiation Protection and Measurements
C. Consumer-Patient Radiation Health and Safety Act
D. International Commission on Radiation Units and Measurements -
ANSWER-C. Consumer-Patient Radiation Health and Safety Act
Where is the most common area in the oral cavity for a dentigerous cyst?
A. Between the central incisors
B. Around the canines
C. Around the third molars
D. Between the premolars - ANSWER-C. Around the third molars
Which of the following measures the amount of radiation that reaches the surface
of the skin?
A. Dose rate
B. Quality factor
C. Mitotic activity
D. Roentgen - ANSWER-D. Roentgen
If there are no teeth to serve as guides, which of the following landmarks indicates
a maxillary molar area radiograph?
END OF
PAGE 3
, RHS EXAM LATEST
A. Tuberosity
B. Incisive foramen
C. Mental foramen
D. Internal oblique ridge - ANSWER-A. Tuberosity
Which of the following PID produces the greatest amount of secondary radiation?
A. Open-end lead-lined cylinder
B. Open-end lead-lined rectangular
C. Closed-end plastic cone
D. Closed-end aluminum cylinder - ANSWER-C. Closed-end plastic cone
The penetrating x-ray beam produced during dental radiography is called
A. characteristic radiation.
B. scatter radiation.
C. primary radiation.
D. secondary radiation. - ANSWER-C. primary radiation.
Which of the following protection techniques is used to minimize x-radiation
exposure to the operator?
A. Structural shielding
B. Wearing a lead line apron
END OF
PAGE 4
