Deck 1: Radiation History

Question 1

Radiation is defined as:

A) A form of energy carried by waves or streams of particles.
B) A beam of energy that has the power to penetrate substances and record image shadows on photographic film.
C) A high-energy radiation produced by the collision of a beam of electrons with a metal target in an x-ray tube.
D) A branch of medicine that deals with the use of x-rays.

Answer 1

A form of energy carried by waves or streams of particles.

Question 2

The x-ray was discovered by:

A) Heinrich Geissler
B) Wilhelm Roentgen
C) Johann Hittorf
D) William Crookes

Answer 2

Wilhelm Roentgen

Question 3

The variable kilovoltage x-ray machine was introduced in:

A) 1895
B) 1913
C) 1923
D) 1957

Answer 3

1957

Question 4

A radiograph is defined as:

A) A beam of energy that has the power to penetrate substances and record image shadows on photographic film.
B) A picture on film produced by the passage of x-rays through an object or body.
C) The art and science of making radiographs by the exposure of film to x-rays.
D) A form of energy carried by waves or a stream of particles.

Question 5

Who exposed the first dental radiograph in the United States using a live person?

A) Otto Walkoff
B) Wilhelm Roentgen
C) Edmund Kells
D) Weston Price

Question 6

William Rollins:

A) Established the first college course in radiography for dental students.
B) Was the first to use film in intraoral radiography.
C) Developed the first dental x-ray unit.
D) Developed the first hot cathode x-ray tube.

Question 7

Current fast radiographic film requires less than ____ % of the initial exposure times used in 1920.

A) 25
B) 10
C) 5
D) 2

Question 8

Which of the following statements is true regarding the importance of dental radiographs?

A) An oral examination with dental radiographs limits the practitioner to what is seen clinically.
B) All dental diseases and conditions produce clinical signs and symptoms.
C) Dental radiographs are not a necessary component of comprehensive patient care.
D) Many dental diseases are typically discovered only through the use of dental radiographs.