BU Dental Radiology Practice Exam

These questions are part of the practice quiz. Start practicing

• The embryo and fetus is identified as which group?
• Which radiographic technique is most useful for the rapid survey of edentulous jaws?
• Can nerve cells regenerate?
• During pregnancy a patient may be irradiated by taking necessary precautions?
• Which factors control image quality?
• Should patients be draped with a lead apron prior to radiographic imaging?
• What is the purpose of the thyroid collar during dental radiography?
• The radiographs that show the entire tooth including the apex are called?
• A beam with longer wavelength has which consequence?
• Overlapping of teeth is caused by what?
• Which statement identifies the first shell around the nucleus?
• Which particle is located outside the nucleus and carries a negative charge?
• The milliamp setting (mA) is a measure of what aspect of X-ray production?
• What does SOD specifically refer to in radiographic practice?
• Which statement best describes the relationship between binding energy and electron distance from the nucleus?
• The premolar bitewing film size is 2. Which option matches 2?
• The film is described as having a certain color. What color is the film described in the material?
• Which statement best describes the term 'density' in radiography?
• Increasing milliamperage produces more of what?
• 1 Gy equals how many rad?
• What is the maximum skin-diameter size of the X-ray beam as restricted by the collimator in standard dental equipment?
• Focal spot target material used in radiography is?
• If the distance from the x-ray tube increases, the intensity of the x-ray beam ______.
• A decrease in vertical angulation will generally cause the image to what?
• Which statement about collimation and patient exposure is true?
• In film processing, fixing is defined as which of the following?
• Degrees of paralleling in radiographic technique are typically?
• Collimation reduces the beam size to the patient to 2.75 inches.
• Which group of structures is radiolucent on a dental radiograph?
• Base for emulsion thickness is approximately?
• X-rays are produced when electrons collide with which component in the tube?
• An underexposed radiographic image appears as
• Ionizing radiation is characterized by which statement?
• What is the correct order of the conventional film processing steps?
• Which statement best explains why fast-moving electrons slow down when approaching a nucleus?
• Which statement describes a disadvantage of digital radiography?
• Which statement is true about bitewing radiographs?
• What components does the x-ray tube contain?
• The purpose of increasing mA is primarily to increase what aspect of the radiographic image?
• Density is primarily influenced by which parameter?
• The inverse square law states that intensity at distance from a point source changes as which of the following?
• What does primary radiation do?
• Which color circle represents the sensor for anterior front imaging?
• X-rays are produced when electrons collide with the tungsten target.
• Overall darkness of a radiograph is called what?
• Tree-like lightening black streaks on a processed film are caused by what?
• How many principal components does the film have, according to the material?
• Which root canal filling material is radiopaque on radiographs?
• The effect of collimation on patient dose is to
• According to the notes, at kVp between 50 and 70, the specified measurement in millimeters is 1.5.
• Which film speed is used to increase image density?
• According to the notes, at kVp above 70, the specified measurement in millimeters is 2.5.
• The milliampere (mA) setting controls which image attribute?
• What does the cathode assembly contain?
• Electrons are what?
• For a fixed exposure, increasing kVp while decreasing mA will primarily affect which aspect of the beam?
• Which of the following is an advantage of panoramic radiography?
• Bitewing radiographs are acquired with which sensor orientation?
• What does mA primarily control in x-ray generation?
• What happens when distance increases?
• Kilovoltage peak is defined as:
• In dental radiography, which parameter primarily controls image contrast?
• Bitewings show what?
• Emulsion is?
• Filtration removes low-energy photons to reduce patient dose.
• What voltage from the power outlet is typical for dental X-ray equipment?
• In your office the radiographs turn brown with age almost all of the time. What corrective action do you take?
• What is the electrical charge of the cathode in a traditional X-ray tube?
• As soon as a film or sensor is placed in a patient's mouth, it is considered contaminated?
• Which component is responsible for focusing the electron beam in a dental X-ray tube?
• In the x-ray tube, increasing kilovoltage peak (kVp) causes:
• Which statement correctly matches imaging types with their sensor orientation?
• A good periapical radiograph should reveal what?
• What does CCD stand for in digital radiography terminology?
• Which parameter directly controls the energy (quality) of the X-ray beam?
• Which sequence should be performed first when taking a full mouth radiographic survey?
• Which statement best describes the number of principal components of X-ray film?
• Which statement about kVp is true?
• Which items influence radiation protection?
• Inherent filtration is best described as which of the following?
• What is the primary purpose of the collimator in intraoral radiography?
• Which color circle corresponds to bitewings in the labeling system?
• In dental radiology, 1 sievert equals how many rems?
• Which tube head configuration reduces collimation by 80%?
• In radiography, which setting is most closely associated with image contrast?
• Kilovolt peak primarily determines:
• A longer wavelength results in which change to energy?
• Who discovered X-rays?
• What is described by the latent period in radiation exposure?
• What does the washing step accomplish?
• Binding energy is the force that keeps electrons in their place, stronger for inner shells.
• Which structure is commonly radiopaque on dental radiographs?
• Doubling the distance from the radiation source has which effect on beam intensity?
• What is the maximum beam diameter allowed at the skin surface for an intraoral dental radiograph?
• Where is the emulsion located on a typical X-ray film according to the text?
• Neutrons are?
• The periapical film size for central/lateral/canine is designated as which?
• In a dental X-ray tube, from which electrode are electrons emitted?
• What does a dot ID appear near the apex indicate about film placement?
• Filtration reduces patient dose by performing which action?
• What happens to scatter radiation?
• Which term describes energy imparted to matter by ionizing radiation per unit mass?
• MSV stands for which unit in radiation measurement?
• MPD stands for which of the following?
• Which statement best describes the collimator?
• Increasing mA affects the beam by:
• Thermionic emission occurs at which component of the X-ray tube?
• What does radiographic image contrast refer to?
• Which statement correctly describes X-ray production in the dental tube?
• Which equipment helps reduce patient exposure in dental radiography?
• Which statement about kilovoltage peak and beam energy is true?
• Which component is responsible for focusing the electron beam toward the anode?
• Short wavelength X-rays correspond to which energy level?
• Which digital type requires cords?
• On a radiograph, which area appears dark?
• Occlusal radiographs use which size film?
• Which digital type does not require cords?
• Occlusal radiographs are frequently used in which scenario?
• The higher the kilovoltage peak (kVp), the more what?
• Dental radiographic exposure is approximately how many millisieverts?
• An overexposed radiographic image appears as
• During the collision, what percent of the energy becomes kinetic energy and what percent becomes radiation?
• Radiolucent areas appear as which color on a radiograph?
• What term describes the overall darkness of a radiographic image?
• Which structure is radiopaque?
• If film density increases, what happens to the image?
• 7 centimeters is approximately how many inches?
• What material are filters in an X-ray tube made of?
• X-ray production occurs when high-speed electrons hit which part of the X-ray tube?
• What describes leakage radiation?
• Which parameter is used to adjust beam energy in dental radiography?
• Which color circle corresponds to posterior periapical radiographs?
• Lower kVp results in more image contrast.
• X-rays travel in straight lines and diverge from a central focal point.
• Which of the following is NOT a property of X-rays?
• Increasing the milliamperage (mA) in dental radiography results in a darker image.
• What is the primary function of the developer solution in film processing?
• X-rays can cause substances to fluoresce and affect photographic film.
• Which action is recommended to correct browning radiographs that occur with age?
• Electrons travel at what fraction of the speed of light?
• A darkroom safe light should be at least how many feet away from the film being opened?
• Inherent filtration primarily reduces which type of photons?
• What does PID stand for in dental radiography?
• Absorbed dose is defined as which of the following?
• CBCT stands for?
• Occlusal radiographs can detect which condition?
• Filtration in dental radiography is best described as which of the following?
• What is the primary form in which most collision energy is manifested in the target during X-ray production?
• Which of the following is NOT a listed pro of digital radiography?
• The milliampere setting primarily affects the number of x-ray photons produced, influencing which image attribute?
• Which parameter primarily controls image density?
• Occlusal radiographs are used for which of the following?
• Protons are?
• Which action is a recommended safety precaution during radiographic exposure?
• What orbit around the nucleus is closest? K or L
• Size 5 film is for which radiographs?
• In anterior periapical radiographs, which sensor orientation is used?
• In dental imaging, PSP stands for which of the following?
• Bremsstrahlung radiation is described as what phenomenon?
• The more energy in the beam, the greater its what?
• Bitewing radiographs primarily reveal?
• An atom is defined as which of the following?
• Which is not a safety precaution when taking X-rays?
• What is the base of the X-ray film described as?
• Which processing step is responsible for forming a visible image by reducing silver halide crystals?
• For posterior periapical radiographs, which sensor orientation is recommended?
• Which unit is used to measure the X-ray tube current?
• A rad is a unit of
• Which statement about nucleus components is correct?
• An increase in vertical angulation will generally cause the image to what?
• mA in x-ray production refers to:
• Focal spot target material commonly used in X-ray tubes is?
• An assistant may hold the film or sensor in place for the patient during exposure.
• What is the tube head in an x-ray unit?
• During a radiographic exposure, in which direction should the cord face?
• What is the term for the line that bisects the angle between the tooth's long axis and the film during paralleling technique?
• Do X-rays travel at the speed of light?
• What are the three major interactions of electrons with target atoms in X-ray production?
• Which condition produces high image contrast (short greyscale)?
• SOD stands for which distance?
• ALARA stands for?
• The harmful effect of x-rays are caused by what?
• Which description best fits the group referred to as the public in radiation exposure classifications?
• The anode in an X-ray tube is typically connected to which polarity to attract electrons?
• Which structure is radiolucent?
• Periapical radiographs show what region?
• Cephalometric x rays are associated with which imaging modality?
• Panoramic radiography provides broad coverage of which anatomy?
• Which color circle corresponds to anterior periapical radiographs?
• Density in radiographic imaging is defined as:
• X-rays are ionizing radiation.
• Which structure is typically radiopaque on a dental radiograph?
• Filtration in dental radiography removes which type of x-rays?
• Which statement best describes the x-ray tube in an imaging system?
• When the ID dot appears near the apex of the tooth it means what?
• Which film speed is the fastest used in dentistry?
• X-ray instruments should always be what?
• What is the electrical charge of the anode in the X-ray tube?
• What describes scatter radiation?
• Which set of terms correctly lists the three major interactions of electrons with the target atoms?
• Radiopaque areas on a radiograph appear as which color tone?
• What is a collimator?
• How should the bump side of film be oriented on a viewbox?
• When exposing the mandibular molar area, what is the position of the film?
• In the paralleling technique, the X-ray beam is directed perpendicular to what line?
• PSP stands for what in digital imaging?
• Periapical radiographs are used to evaluate which of the following?