Term
Which of these forms of radiation is least capable of causing ionization of body tissue cells?
-Cosmic rays
-Gamma rays
-Infrared light
-X-rays |
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Definition
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Term
| An ion pair results when: |
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Definition
| An electron is removed from an atom |
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Term
Which of the following is NOT a property shared by all energies of the electromagnetic spectrum?
-Emit an electrical field at right angles to the path of travel.
-Have energy that is measurable and different.
-Travel in a pulsing motion at the speed of sound.
-Have no electrical charge, mass, or weight. |
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Definition
| Travel in a pulsing motion at the speed of sound |
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Term
| The measurement taken from two consecutive peaks on a wave is termed: |
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Definition
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Term
| Radiation produced when high-speed electrons are stopped or slowed down by the tungsten atom nuclei is called: |
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Definition
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Term
| What term describes the smallest particle of an element that retains the properties of that element? |
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Definition
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Term
| Which form of the x-ray beam is most detrimental to the patient and operator? |
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Definition
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Term
| The binding energy or binding force of an electron is: |
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Definition
| Weaker for electrons located in outer shells than for inner shells. |
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Term
Which of these forms of radiation has the greatest penetrating power?
-Visible light
-Radio waves
-X-rays
-Sunlamp |
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Definition
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Term
| Which is the most common possibility when an x-ray photon interacts with matter? |
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Definition
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Term
Which of these electromagnetic radiations has the shortest wavelength?
-Radar
-Ultraviolet
-Infrared rays
-X-rays |
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Definition
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Term
Which of the following occurs only at 70 kVp or higher and accounts for a very small part of the x-rays produced in the dental x-ray machine?
-General radiation
-Characteristic radiation
-Compton scatter
-Coherent scatter |
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Definition
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Term
| What term best describes the process of transferring x-ray energy to the atoms of the material through which the x-ray photon passes? |
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Definition
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Term
| Which subatomic particle carries a negative electric charge? |
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Definition
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Term
| Radiant energy sufficient to remove an electron from its orbital level of an atom is called? |
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Definition
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Term
| What is the location in which x-rays are produced? |
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Definition
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Term
| The purpose of the anode is to |
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Definition
| convert electrons into x-ray photons |
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Term
| the "boiling off of electrons" occurs at the |
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Definition
| tungsten filament in the cathode end |
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Term
| In the x-ray tube the number of electrons produced on in the electron cloud is controlled by: |
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Definition
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Term
| How hard the electrons steam across and hit the tungsten target is determined by |
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Definition
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Term
| Approximately what percentage of kinetic energy of the electrons is converted to x-rays at the target? |
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Definition
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Term
| Which of the compponets of the x-ray machine would have an indicatior light for the on-off switch and an audible for the exposure button? |
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Definition
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Term
| Which of the following is used to decrease the electrical voltage used on the cathode side of the x-ray tube? |
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Definition
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Term
| The heat that is generated in x-ray production is dissipated through: |
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Definition
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Term
| Within the x-ray tube, electrons are generated by the: |
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Definition
| tungsten filament in the cathode end |
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Term
| Which component of the x-ray tubehead absorbs heat created by the production of x-rays? |
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Definition
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Term
| Which transformer in the x-ray machine is used to change the voltage from the incoming 110 or 220 line to 65,000 volts required? |
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Definition
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Term
| The portion of the anode in which radiation is produced |
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Definition
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Term
| The portion of the cathode that is heated to produce an electron cloud. |
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Definition
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Term
| The process of boiling off electrons. |
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Definition
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Term
| The transformer that increases the voltage of electricity. |
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Definition
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Term
| The portion of the anode that draws the heat away from the focal spot |
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Definition
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Term
| The cooling system of the x-ray tube. |
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Definition
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Term
| The portion of the cathode that contains the electron cloud. |
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Definition
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Term
| The transformer that reduces the voltage of electricity. |
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Definition
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Term
| The negative side of the x-ray tube. |
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Definition
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Term
| The positive side of the x-ray tube. |
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Definition
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Term
| What term describes the process by which unstableatoms undergo decay in an effort to obtain nuclear stability? |
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Definition
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Term
Which of these terms is the unit used to measure radiation exposure? -Angstrom (Å)
-Gray (rad) -Sievert (rem)
-Coulombs per kilogram (roentgen) |
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Definition
| Coulombs per kilogram (roentgen) |
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Term
| The Système Internationale (SI) unit that has replaced the traditional unit rem is |
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Definition
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Term
| Dental and medical x-rays account for what percentageof the overall total exposure to ionizing radiation to an individual in the United States? |
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Definition
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Term
| What is the average amount of background radiation to an individual in the United States? |
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Definition
| 6.2 mSv (620 millirem) per year |
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Term
Each of the following may be located on the control panel EXCEPT one. Which one is the EXCEPTION?
-mA selector
-kVp selector
-Focusing cup
-Line switch |
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Definition
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Term
Which of the following activates the x-ray production process?
-Exposure button
-Milliamperage
-Voltmeter
-Timer selector |
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Definition
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Term
| The x-ray machine component that allows the operator to position the tube head is called the |
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Definition
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Term
| To produce a larger quantity of electrons available to produce x-rays, increase the |
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Definition
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Term
| What term describes the electrical pressure (difference in potential) between two electrical charges? |
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Definition
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Term
| Which term best describes an x-ray beam that is com-posed of a variety of energy wavelengths? |
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Definition
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Term
| The process of heating the cathode wire filament until red hot and electrons boil off is called |
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Definition
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Term
| What metal is used for the target in the x-ray tube? |
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Definition
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Term
| Which of these must be charged negatively during the time that the x-ray tube is operating to produce x-rays? |
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Definition
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Term
| Which of these changes the current coming into the x-ray machine? |
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Definition
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Term
| What term describes the opening in the tube housing that allows the primary beam to exit? |
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Definition
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Term
| Which of the following removes the low-energy, long- wavelength energy from the beam? |
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Definition
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Term
| After depressing the exposure button the radiographer will hear an audible beep sound indicating that the |
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Definition
| x-rays are being generated. |
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Term
| Registration and inspection of x-ray machines is regulated by the |
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Definition
| federal government, state government or local government |
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Term
| Registration and inspection of x-ray machines is regulated by the |
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Definition
| federal government, state government or local government |
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Term
The laws allowing individuals to place and expose dental radiographs vary from state to state.
Copyright | Prentice Hall | Essentials of Dental Radiography | c_volker@yahoo.com | Printed from www.chegg.com |
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Definition
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Term
Which of the following is a risk management strategy?
-The use of fast-speed film, film-holding devices, and collimation
-Monitoring the dental radiographer with radiation dosimeters
-Obtaining a copy of a new patient’s radiographs from a previous dentist
-All of the above |
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Definition
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Term
Which of these comments should be avoided when talking to the patient?
-“We have switched to a fast-speed film.”
-“This exposure button sticks sometimes.”
-“You must stay still during the exposure.”
-“I’m certified to take your radiographs.” |
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Definition
| “This exposure button sticks sometimes.” |
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Term
| Every patient has the legal right to make choices about the oral health care they receive. This is called |
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Definition
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Term
| Legally dental radiographs should be retained for an individual who ceases to be a patient for |
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Definition
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Term
| Both the dentist and the dental radiographer are liable for procedures performed by the dental radiographer |
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Definition
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Term
| Failure to use a reasonable amount of care that results in injury is termed |
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Definition
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Term
| The courts haveruled that radiographs are the property of the |
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Definition
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Term
| When patients express opposition to having dental radiographs taken, the radiographer should |
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Definition
| explain why the radiographs are needed and what the benefits will be. |
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Term
| A professional code of ethics |
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Definition
| helps to define the rules of conduct for its members. |
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Term
Each of the following is a goal of the radiographer EXCEPT one. Which one is the EXCEPTION?
-Increasing the demand for dental x-ray services
-Reducing the radiation dose used during an exposure
-Professional improvement and advancement
-Presenting confidence to gain patient acceptance |
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Definition
| Increasing the demand for dental x-ray services |
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Term
| The key to producing quality radiographic images is |
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Definition
| gaining patient trust and cooperation, presenting a confident, caring image, and communicating effectively |
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Term
| Dental radiographers with a positive attitude are more likely to produce high-quality radiographs. |
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Definition
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Term
| When a patient trusts the radiographer, the patient is more likely to cooperate with the radiographic procedures. |
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Definition
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Term
| The ability to share in the patient’s emotions and feelings is called |
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Definition
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Term
Each of the following will enhance verbal communication EXCEPT one. Which one is the EXCEPTION?
-Face the patient
-Make eye contact
-.Use clear commands
-Use slang words. |
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Definition
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Term
Which of the following words should be avoided when discussing the radiographic procedure?
-Picture
-Zap
-X-ray
-Radiograph |
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Definition
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Term
| The use of highly technical words may confuse the patient and result in miscommunication. |
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Definition
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Term
| The method of show-tell-do is a beneficial way of communicating with |
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Definition
| someone who speaks a different language, children and hearing-impaired patients. |
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Term
| What is the value of patient education regarding dental radiographs? |
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Definition
| Patient is more likely to accept the treatment plan |
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Term
| Patient education in radiography is necessary to |
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Definition
| increase acceptance of oral health care recommendations. |
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