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X-Ray Chapter 2,3,6

Practice for state test

QuestionAnswer
Interaction with the x-ray photon as a result of the photoelectric effect is harmful to the patient because ionization occurs. The statement is true
The nucleus of an atom contains Protons and neutrons
The purpose of the anode is to Convert electrons into x-ray photons
Your patient had x-rays taken in her previous dental office. She notices that the long metal tube at the end of the x-ray head is longer than it was at the other office. What explanation would you give. It aims and shapes the x-ray beam
Cathode rays are derived from which of the following types of particulate radiation? Electrons
Which of the following elements is the simplest atom? Hydrogen (H #1)
In the dental x-ray tube, the number of electrons created is controlled by Milliamperage
Which of the following statements is true of ionizing radiation? It is radiation that is capable of producing ions by removing or adding an electron to an atom
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? 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 would you adjust if you wanted to produce characteristic radiation? Kilovoltage
The fundamental unit of matter is the Atom
Which of the following statements is true of orbits or shells in the atom? The orbiting shell closest to the nucleus has the highest energy level
The binding energy or binding force of an electron is Determined by the distance between the orbiting electrons and the nucleus
An ion pair results when An electron is removed from an atom
Radiation is the emission and propagation of energy through space or a substance in the form of waves or particles True
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 True
Which of the following forms of electromagnetic radiation has the shortest wavelength? Dental x-ray wave
Which form of the x-ray beam is most detrimental to the patient and operator? Scatter radiation
Which of the following statements is true of ionization? An atom that gains an electron has a negative charge, and an atom that loses an electron has a positive charge
Which of the following components of the x-ray machine would have two indicator lights? The control panel
Approximately what percentage of the kinetic energy of the electrons is converted to x-rays at the anode? Less than 1%
Exposure time is measured in Impulses
Which of the following changes will increase x-ray beam intensity? Decreasing the source-to-film distance
The position-indicating device (PID) is an extension of the Tubehead
The _____________ allow(s) for positioning of the tubehead Extension arm
When lower kilovoltage settings are used, an image with ____ will result High contrast
You are on a mission trip, and your responsibility is to take radiographs. You are using a handheld x-ray machine, digital sensors, and a receptor holder. Sterilization is not available. Which of the following receptor holders would you use? A Uni-bite
A _____________ eliminates the need for the patient to stabilize the receptor Receptor holder
(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 Both statements are false
When the kilovoltage is increased Electrons move from the cathode to the anode with more speed
When contrasted with the use of 70 kV for dental x-rays, the use of 60 kV produces Less penetrating dental x-rays with longer wavelength
A beam alignment device can be used to help the dental radiographer position the PID in relation to the _____________ and the receptor Tooth
When kilovolt is increased, a Higher energy x-ray beam with increased penetrating ability results
Milliamperage regulates the _________ of electrons produced at the cathode filament Quantity
_________________ regulate(s) the manufacture and installation of dental x-ray equipment The federal government
Which of the following statements is true of the use of voltage in dental x-ray equipment? Dental x-ray equipment requires the use of 60 to 70 kilovolts
Which of the following statements is true of wavelength in reference to radiation? X-rays with longer wavelength have less penetrating power
Created by: Isaiflores
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