A radiograph is defined as correct answers a picture on film produced by the passage of x-rays through an object or body.
Current fast radiographic film requires ____ % less exposure time than the initial exposure times used in 1920. correct answers 2
Who modified the paralleling technique ...
A radiograph is defined as correct answers a picture on film produced by the passage
of x-rays through an object or body.
Current fast radiographic film requires ____ % less exposure time than the initial
exposure times used in 1920. correct answers 2
Who modified the paralleling technique with the introduction of the long-cone
technique? correct answers F. Gordon Fitzgerald
Radiation is defined as correct answers a form of energy carried by waves or streams
of particles.
The x-ray was discovered by correct answers Wilhelm Roentgen
Which would you adjust if you wanted to produce characteristic radiation? correct
answers kilovoltage
Thermionic emission of electrons occurs at the correct answers tungsten filament in the
cathode.
Heat is a byproduct of x-ray production. Which component of the x-ray tubehead
dissipates the heat created by the production of x-rays? correct answers Insulating oil
Which of the following statements is true of ionizing radiation? correct answers It is
radiation that is capable of producing ions by removing or adding an electron to an
atom.
Electromagnetic radiations correct answers include x-rays and visible light.
Which is the most common possibility when an x-ray photon interacts with matter?
correct answers Compton scatter
Which of the following statements is true of orbits or shells in the atom? correct
answers The orbiting shell closest to the nucleus has the highest energy level.
An ion pair results when correct answers an electron is removed from an atom.
Which of the following statements is true of the wave concept of electromagnetic
radiation? correct answers Frequency and wavelength are inversely related.
, Within the x-ray tube, electrons are generated by the correct answers tungsten filament
in the cathode.
(1) Radiation is the emission and propagation of energy through space or a substance
in the form of waves or particles. (2) Radioactivity can be defined as the process by
which certain unstable atoms or elements undergo spontaneous disintegration, or
decay, in an effort to attain a more balanced nuclear state. correct answers Both
statements are true.
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? correct answers Too many electrons
would be produced for the purpose of dental x-rays. Only 3-5 volts are required to heat
the tungsten filament.
The binding energy or binding force of an electron is correct answers determined by the
distance between the orbiting electrons and the nucleus.
Which of the following forms of electromagnetic radiation has the shortest wavelength?
correct answers Dental x-ray wave
Photons are correct answers a component of the particle concept of electromagnetic
radiation.
According to the inverse square law, if the length of the PID is halved, the resultant
beam is ___________ as intense. correct answers one quarter ?
Which of the following statements is true of the use of voltage in dental x-ray
equipment? correct answers Dental x-ray equipment requires the use of 60 to 70
kilovolts.
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? correct
answers Increase impulses.
In regard to increasing density correct answers an increase in either kV or mA will
increase density.
An image with "low" contrast correct answers is useful for the detection of periodontal
or periapical disease and has many shades of gray.
______________ is a measurement of force that refers to the potential difference
between two electrical charges. correct answers voltage
You have taken your first dental image on your patient. The contrast is high and you are
looking for periodontal disease. You are using a DC machine and you have control of
your settings. You have a 60- to 70-kV range and a 6- to 8-mA range. You had the kV
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