Question 1

Each of the following is an advantage of digital imaging EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   It reduces radiation over film-based radiography.
B)   It eliminates the need for the darkroom and processing chemistry.
C)   It allows the use of pointed cones without radiation hazards.
D)   It avoids the need for disposal of hazardous materials such as lead foils from film packets.
E)   It produces enhanced two- and three-dimensional images.F) A) and C)
G) None of the above

Question 2

In the early 1900s dental patients would have to be sent to hospitals or a physician's office to have a dental radiograph exposed.

Accepted Answer

A) True 
 B)False

Question 3

Early dental film required long exposure times because:

Accepted Answer

A)   it was hand-wrapped.
B)   the emulsion was only on one side.
C)   glass plates were used as the base.
D)   the packets were not moisture resistant.E) A) and B)
F) A) and C)

Question 4

The bisecting technique is the technique of choice for intraoral radiography.

Accepted Answer

A) True 
 B)False

Question 5

What New Orleans dentist first made practical use of x-rays in the treatment of dental patients?

Accepted Answer

A)   H. R. Raper
B)   G. M. Fitzgerald
C)   F. Mouyen
D)   C. E. KellsE) A) and B)
F) A) and C)

Question 6

Early dental x-ray machines were an electrical hazard.

Accepted Answer

A) True 
 B)False

Question 7

Computed tomography eliminates the use of radiation to produce an image.

Accepted Answer

A) True 
 B)False

Question 8

The PID is used to direct the useful beam of radiation.

Accepted Answer

A) True 
 B)False

Question 9

Each of the following is a potential use of dental radiographs EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)   Diagnosing dental caries
B)   Evaluating development of dentition
C)   Detecting missing teeth
D)   Assessing patient self-care
E)   Evaluating trauma to teeth and supporting boneF) A) and B)
G) A) and E)

Question 10

The most significant advancement in the early days of radiography came in 1913 when W. D. Coolidge:

Accepted Answer

A)   became the first to alert the profession of the dangers of radiation exposure and advocated for the science of radiation protection.
B)   exposed a prototype of a dental radiograph, setting the stage for preventive oral health care.
C)   developed a variable, high kilovoltage x-ray machine compatible with the paralleling technique.
D)   introduced an x-ray tube that allowed for an x-ray output that could be predetermined and accurately controlled.E) A) and C)
F) None of the above

Question 11

What medical imaging modality records a selected plane of tissues?

Accepted Answer

A computed tomograph...

Question 12

Early researchers working in the field of radiography were not aware that continued exposure to x-rays produced accumulations of radiation effects in the body because x-rays are invisible.

Accepted Answer

A)   Both the statement and reason are correct and related.
B)   Both the statement and reason are correct but NOT related.
C)   The statement is correct, but the reason is NOT.
D)   The statement is NOT correct, but the reason is correct.
E)   NEITHER the statement NOR the reason is correct.F) None of the above
G) A) and B)

Question 13

In dental digital imaging systems, what replaces film?

Accepted Answer

Sensors are comparab...

Question 14

Who developed the hot cathode ray tube?

Accepted Answer

A)   W. D. Coolidge
B)   W. A. Price
C)   H. R. Raper
D)   W. H. RollinsE) A) and B)
F) A) and C)

Question 15

The positioning indicating device (PID)  is sometimes called a "cone" because the PID of early dental x-ray machines was of a pointed shape.

Accepted Answer

A)   Both the statement and reason are correct and related.
B)   Both the statement and reason are correct but NOT related.
C)   The statement is correct, but the reason is NOT.
D)   The statement is NOT correct, but the reason is correct.
E)   NEITHER the statement NOR the reason is correct.F) All of the above
G) B) and C)

Question 16

C. Edmund Kells encouraged the practical use of radiographs in dentistry.

Accepted Answer

A) True 
 B)False

Question 17

Who was awarded the first Nobel Prize for physics in 1901, for his experimental work with radiation?

Accepted Answer

A)   W. J. Morton
B)   O. Walkhoff
C)   W. D. Coolidge
D)   W. C. RoentgenE) B) and C)
F) A) and C)

Question 18

The paralleling technique is based on the rule of isometry.

Accepted Answer

A) True 
 B)False

Question 19

A radiograph is an image produced by exposure to x-rays.

Accepted Answer

A) True 
 B)False

Question 20

Digital imaging replaces the conventional dental x-ray machine.

Accepted Answer

A) True 
 B)False

Exam 1: Dental Radiography: Historical Perspective and Future Trends

Each of the following is a potential use of dental radiographs EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

The most significant advancement in the early days of radiography came in 1913 when W. D. Coolidge:

Correct AnswerverifiedShow Answer

C. Edmund Kells encouraged the practical use of radiographs in dentistry.

Correct AnswerverifiedShow Answer

Who developed the hot cathode ray tube?

Correct AnswerverifiedShow Answer

The positioning indicating device (PID) is sometimes called a "cone" because the PID of early dental x-ray machines was of a pointed shape.

Correct AnswerverifiedShow Answer

Early dental film required long exposure times because:

Correct AnswerverifiedShow Answer

Each of the following is an advantage of digital imaging EXCEPT one. Which one is the EXCEPTION?

Correct AnswerverifiedShow Answer

Computed tomography eliminates the use of radiation to produce an image.

Correct AnswerverifiedShow Answer

What New Orleans dentist first made practical use of x-rays in the treatment of dental patients?

Correct AnswerverifiedShow Answer

Digital imaging replaces the conventional dental x-ray machine.

Correct AnswerverifiedShow Answer

Who was awarded the first Nobel Prize for physics in 1901, for his experimental work with radiation?

Correct AnswerverifiedShow Answer

The bisecting technique is the technique of choice for intraoral radiography.

Correct AnswerverifiedShow Answer

In the early 1900s dental patients would have to be sent to hospitals or a physician's office to have a dental radiograph exposed.

Correct AnswerverifiedShow Answer

Early dental x-ray machines were an electrical hazard.

Correct AnswerverifiedShow Answer

What medical imaging modality records a selected plane of tissues?

Correct AnswerverifiedA computed tomograph...View AnswerShow Answer

Early researchers working in the field of radiography were not aware that continued exposure to x-rays produced accumulations of radiation effects in the body because x-rays are invisible.

Correct AnswerverifiedShow Answer

In dental digital imaging systems, what replaces film?

Correct AnswerverifiedSensors are comparab...View AnswerShow Answer

The paralleling technique is based on the rule of isometry.

Correct AnswerverifiedShow Answer

A radiograph is an image produced by exposure to x-rays.

Correct AnswerverifiedShow Answer

The PID is used to direct the useful beam of radiation.

Correct AnswerverifiedShow Answer

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A computed tomograph...
View Answer

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Sensors are comparab...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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