Test Bank For Dental Radiography, 6th - 2022
All Chapters
Who exposed the first dental radiograph in the United States using a live person? -
ANSWER>>Edmund Kells
Current fast radiographic film requires ____ % less exposure time than the initial exposure
times used in 1920. - ANSWER>>2
Your patient asked you why dental images are important. Which of the following is the correct
response? - ANSWER>>Many dental diseases are typically discovered only through the use of
dental images
Which of the following is an advantage of digital imaging? - ANSWER>>Increased speed for
viewing images
Which discovery was the precursor to the discovery of x-rays? - ANSWER>>cathode rays
Which of the following forms of electromagnetic radiation has the shortest wavelength? -
ANSWER>>dental x-rays wave
Which form of the x-ray beam is most detrimental to the patient and operator? -
ANSWER>>scatter radiation
The nucleus of an atom contains - ANSWER>>protons and neutrons
Thermionic emission of electrons occurs at the - ANSWER>>tungsten filament in the cathode
Which of the following forms of electromagnetic radiation are capable of ionization? -
ANSWER>>x-rays
Approximately what percentage of the kinetic energy of the electrons is converted to x-rays at
the anode? - ANSWER>>Less than 1%
The spontaneous emission of radiation from the disintegration of unstable atomic nuclei is -
ANSWER>>radioactivity
Your x-ray machine runs off 110 volts. Theoretically what would occur if there was no step-
down transformer in the x-ray control panel? - ANSWER>>Too many electrons would be
produced for the purpose of dental x-rays. Only 3-5 volts are required to heat the tungsten
filament.
, Which of the following statements is true of the wave concept of electromagnetic radiation? -
ANSWER>>Frequency and wavelength are inversely related
In the dental x-ray tube, the number of electrons created is controlled by -
ANSWER>>milliamperage
Interaction with the x-ray photon as a result of the photoelectric effect is harmful to the patient
because ionization occurs. - ANSWER>>the statement is true
electromagnetic radiations - ANSWER>>include x-rays and visible light
Which subatomic particle carries a negative electrical charge? - ANSWER>>An electron
The purpose of the anode is to - ANSWER>>convert electrons into x-ray photos
The binding energy or binding force of an electron is - ANSWER>>determined by the distance
between the orbiting electrons and the nucleus
When contrasted with the use of 70 kV for dental x-rays, the use of 60 kV produces -
ANSWER>>less penetrating dental x-rays with longer wavelength.
(1) As kilovoltage, milliamperage, and time increase, x-ray beam intensity decreases. (2) As
distance and filtration increase, the intensity of the x-ray beam increases. - ANSWER>>both
statements are false
You are going to take dental images on your patient. He is larger than average. What machine
setting adjustment should you make prior to taking dental images? - ANSWER>>increase
impulses
When the kilovoltage is increased - ANSWER>>electrons move from the cathode to the anode
with more speed.
When kilovolt is increased, a - ANSWER>>higher energy x-ray beam with increased penetrating
ability results.
The quantity of the x-rays produced is controlled by - ANSWER>>milliamerage
You have been using a dental x-ray machine that has a 4-inch PID. Your new machine has an 8-
inch PID. Given that all exposure factors remain the same, according to the inverse square law,
the resultant beam would be ___________ as intense. - ANSWER>>one quarter
Which of the following statements is true of wavelength in reference to radiation? -
ANSWER>>X-rays with longer wavelength have less penetrating power.
All Chapters
Who exposed the first dental radiograph in the United States using a live person? -
ANSWER>>Edmund Kells
Current fast radiographic film requires ____ % less exposure time than the initial exposure
times used in 1920. - ANSWER>>2
Your patient asked you why dental images are important. Which of the following is the correct
response? - ANSWER>>Many dental diseases are typically discovered only through the use of
dental images
Which of the following is an advantage of digital imaging? - ANSWER>>Increased speed for
viewing images
Which discovery was the precursor to the discovery of x-rays? - ANSWER>>cathode rays
Which of the following forms of electromagnetic radiation has the shortest wavelength? -
ANSWER>>dental x-rays wave
Which form of the x-ray beam is most detrimental to the patient and operator? -
ANSWER>>scatter radiation
The nucleus of an atom contains - ANSWER>>protons and neutrons
Thermionic emission of electrons occurs at the - ANSWER>>tungsten filament in the cathode
Which of the following forms of electromagnetic radiation are capable of ionization? -
ANSWER>>x-rays
Approximately what percentage of the kinetic energy of the electrons is converted to x-rays at
the anode? - ANSWER>>Less than 1%
The spontaneous emission of radiation from the disintegration of unstable atomic nuclei is -
ANSWER>>radioactivity
Your x-ray machine runs off 110 volts. Theoretically what would occur if there was no step-
down transformer in the x-ray control panel? - ANSWER>>Too many electrons would be
produced for the purpose of dental x-rays. Only 3-5 volts are required to heat the tungsten
filament.
, Which of the following statements is true of the wave concept of electromagnetic radiation? -
ANSWER>>Frequency and wavelength are inversely related
In the dental x-ray tube, the number of electrons created is controlled by -
ANSWER>>milliamperage
Interaction with the x-ray photon as a result of the photoelectric effect is harmful to the patient
because ionization occurs. - ANSWER>>the statement is true
electromagnetic radiations - ANSWER>>include x-rays and visible light
Which subatomic particle carries a negative electrical charge? - ANSWER>>An electron
The purpose of the anode is to - ANSWER>>convert electrons into x-ray photos
The binding energy or binding force of an electron is - ANSWER>>determined by the distance
between the orbiting electrons and the nucleus
When contrasted with the use of 70 kV for dental x-rays, the use of 60 kV produces -
ANSWER>>less penetrating dental x-rays with longer wavelength.
(1) As kilovoltage, milliamperage, and time increase, x-ray beam intensity decreases. (2) As
distance and filtration increase, the intensity of the x-ray beam increases. - ANSWER>>both
statements are false
You are going to take dental images on your patient. He is larger than average. What machine
setting adjustment should you make prior to taking dental images? - ANSWER>>increase
impulses
When the kilovoltage is increased - ANSWER>>electrons move from the cathode to the anode
with more speed.
When kilovolt is increased, a - ANSWER>>higher energy x-ray beam with increased penetrating
ability results.
The quantity of the x-rays produced is controlled by - ANSWER>>milliamerage
You have been using a dental x-ray machine that has a 4-inch PID. Your new machine has an 8-
inch PID. Given that all exposure factors remain the same, according to the inverse square law,
the resultant beam would be ___________ as intense. - ANSWER>>one quarter
Which of the following statements is true of wavelength in reference to radiation? -
ANSWER>>X-rays with longer wavelength have less penetrating power.
