Take This Important Radiology Test

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  • 1/121 Questions

    Film is best stored in an area that is 

    • Hot
    • Humid
    • Cool and dry
    • Exposed to radiation
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About This Quiz

Quiz: Take this important radiology test. When it comes to viewing the inside of the boy without cutting it up, radiology is the next best thing at diagnosing most patients. Is this is done through x-rays, or is it just all about MRIs? To test just how much you know about radiology, we have prepared the comprehensive quiz below. How about you try it out!

Take This Important Radiology Test - Quiz

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  • 2. 

    A cone-cut occurs when 

    • The receptor is underexposed

    • The receptor is over exposed

    • The PID was not properly aligned with the periapical receptor holder

    • The exposure button was not depressed for a sufficient amount of time

    Correct Answer
    A. The PID was not properly aligned with the periapical receptor holder
    Explanation
    The correct answer is "the PID was not properly aligned with the periapical receptor holder." A cone-cut occurs when the position-indicating device (PID) is not aligned properly with the periapical receptor holder. This misalignment results in part of the X-ray beam being blocked, causing an incomplete exposure of the receptor. This can lead to inaccurate or incomplete diagnostic information.

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  • 3. 

    ______-speed film is currently the fastest intraoral film available

    • D

    • E

    • F

    • G

    Correct Answer
    A. F
  • 4. 

    Which of the following types of dental xray film would you place inside your patients mouth

    • Intraoral

    • Extraoral

    • Duplicating

    • Screen 

    Correct Answer
    A. Intraoral
    Explanation
    Intraoral dental x-ray film is the correct answer because it is specifically designed to be placed inside the patient's mouth. This type of film allows for detailed and close-up images of the teeth and surrounding structures, providing valuable information for dental diagnosis and treatment planning. Extraoral x-ray film, on the other hand, is placed outside the mouth and is used to capture images of the entire jaw or skull. Duplicating film is used to make copies of x-ray images, while screen film is used in conjunction with a dental x-ray machine that utilizes a screen to produce the image.

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  • 5. 

    The appearance of a patients finger on the image is called a 

    • Hemangioma

    • Phalangioma

    • Myxoma

    • Pericytoma

    Correct Answer
    A. Phalangioma
    Explanation
    A phalangioma refers to the appearance of a patient's finger on an image. It is a term used to describe an abnormal growth or tumor in the finger. This could be a benign condition such as a hemangioma, which is a type of blood vessel tumor, or it could be a different type of tumor like a myxoma or pericytoma. Without further information, it is difficult to determine the exact nature of the appearance, but phalangioma is a general term that encompasses these possibilities.

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  • 6. 

    Your dentist asks you to take radiographs on your patient in order to check the interproximal surfaces of the posterior maxillary and mandibular teeth for decay. which type of film would be the best to take the radiograph

    • Maxillary and mandibular periapical film

    • Panoramic film

    • Bite-wing film

    • Occlusal film

    Correct Answer
    A. Bite-wing film
    Explanation
    The best type of film to take radiographs of the interproximal surfaces of the posterior maxillary and mandibular teeth for decay is the bite-wing film. Bite-wing films are specifically designed to capture detailed images of the crowns of the teeth and the interproximal areas. They are placed inside the patient's mouth and the patient bites down on a tab to hold the film in place. This allows the dentist to accurately assess the presence of decay in the areas between the teeth, which are difficult to see with the naked eye.

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  • 7. 

    Concentrated power and liquid film processing solutions are mixed with _________ before use

    • Ammonia

    • Vinegar

    • Tap water

    • Distilled water

    Correct Answer
    A. Distilled water
    Explanation
    Concentrated power and liquid film processing solutions need to be mixed with distilled water before use. Distilled water is preferred because it is free from impurities and minerals that could potentially affect the effectiveness of the solutions. Using tap water or any other type of water may introduce impurities or alter the chemical composition of the solutions, leading to inaccurate or undesirable results. Therefore, distilled water is the recommended choice for ensuring the proper performance of the solutions.

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  • 8. 

    Film hangers are a device used to 

    • Hold films during processing

    • Mount films

    • View films

    • Open film packets

    Correct Answer
    A. Hold films during processing
    Explanation
    Film hangers are a device used to hold films during processing. During the development process, films need to be securely held in place to ensure even and consistent exposure to the chemicals. Film hangers provide a safe and efficient way to suspend the films in the processing solution, allowing for proper development and ensuring that the films are not damaged or contaminated. Therefore, the correct answer is "hold films during processing."

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  • 9. 

    Prior to using the developer each day you compare the reference sheet to a test film that you developed to check to see if the developer chemicals depleted. what are you comparing when you look at the two films

    • MA

    • KVp

    • Color

    • Density

    Correct Answer
    A. Density
    Explanation
    When comparing the reference sheet to the test film, you are checking for any changes in density. Density refers to the darkness or lightness of an image on the film. By comparing the density of the reference sheet to the test film, you can determine if the developer chemicals have depleted. If there is a significant difference in density between the two films, it indicates that the developer chemicals may need to be replenished.

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  • 10. 

    Overdeveloped films may result from

    • Inadequate development time

    • Over concentrated developer solution

    • Low developer temperature

    • Depleted or contaminated developer solution

    Correct Answer
    A. Over concentrated developer solution
    Explanation
    Overdeveloped films may result from an over concentrated developer solution. When the developer solution is too concentrated, it can cause excessive development of the film, leading to increased density and contrast. This can result in darker and more intense images on the film. It is important to maintain the correct concentration of the developer solution to ensure proper development of the film.

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  • 11. 

    The perform the coin test, the film and coin are exposed to 

    • The safelight

    • The darkroom ceiling or white light

    • The light with the dark room door open

    • No light at all

    Correct Answer
    A. The safelight
    Explanation
    The correct answer is the safelight. In a darkroom, a safelight is used to provide illumination without affecting the light-sensitive film. The safelight emits a specific wavelength of light that does not expose the film, allowing the photographer to handle and inspect the film without causing any damage. Using any other light source, such as the darkroom ceiling or white light, the light with the darkroom door open, or no light at all, would result in the film being exposed and potentially ruined.

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  • 12. 

    To avoid a double exposure 

    • Only expose and process one half of the patients mouth at a time

    • Mark exposed films with indelible ink

    • Always separate exposed and unexposed film and PSP receptors

    • Ask the patient to hold the unexposed film and PSP receptors

    Correct Answer
    A. Always separate exposed and unexposed film and PSP receptors
    Explanation
    To avoid a double exposure, it is important to always separate exposed and unexposed film and PSP receptors. This ensures that the unexposed film and receptors do not come into contact with the already exposed ones, preventing any overlapping or double exposure of the images. By keeping them separate, the risk of obtaining inaccurate or unclear radiographic images is reduced, allowing for more accurate diagnosis and treatment planning.

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  • 13. 

    Which types of cells are more sensitive to radiation 1. rapidly dividing 2. slowly dividing 3. young 4. old

    • 1 and 3

    • 1 and 4

    • 2 and 3

    • 2 and 4

    Correct Answer
    A. 1 and 3
    Explanation
    Rapidly dividing cells and young cells are more sensitive to radiation. Rapidly dividing cells are more susceptible to radiation because radiation damages DNA, and rapidly dividing cells have a higher rate of DNA replication. Young cells, which are still in the early stages of development, also have a higher sensitivity to radiation as they are more actively dividing and growing compared to older cells.

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  • 14. 

    A panoramic radiograph is an example of an intraoral film. an occlusal radiograph is an example of an extraoral film

    • Both statements are true

    • Both statements are false

    • The first are true second is false

    • The first statement is false the second is true

    Correct Answer
    A. Both statements are false
  • 15. 

    Which of the following is a sign or symptom of acute radiation syndrome

    • Genetic defects

    • Birth abnormalities

    • Hair loss

    • Cancer

    Correct Answer
    A. Hair loss
    Explanation
    Hair loss is a sign or symptom of acute radiation syndrome. Exposure to high levels of radiation can damage the hair follicles, leading to hair loss. This is because radiation affects rapidly dividing cells, and hair follicles are one of the fastest dividing cells in the body. Therefore, hair loss is commonly observed in individuals who have been exposed to high levels of radiation, such as those undergoing radiation therapy for cancer treatment or those involved in nuclear accidents.

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  • 16. 

    Your patient is concerned about being exposed to dental xrays. which of the following could you tell your patient to alleviate her fears

    • We take xrays once a year, it is safe, and that is all your insurance will pay for

    • Your risk of getting cancer from dental xrays is only 2 times greater than getting cancer spontaneously

    • The risks from dental imaging are not significantly greater than the risks of other everyday activities in modern life

    • Three fourths of the radiation exposure you will have throughout your life will come from background radiation

    Correct Answer
    A. The risks from dental imaging are not significantly greater than the risks of other everyday activities in modern life
    Explanation
    The explanation for the given correct answer is that dental imaging does not pose significantly greater risks compared to other everyday activities in modern life. This statement aims to alleviate the patient's concerns by reassuring them that the level of risk associated with dental x-rays is similar to the risks they encounter in their daily lives. By providing this information, the patient can gain a better understanding of the relative safety of dental imaging and feel more at ease about being exposed to dental x-rays.

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  • 17. 

    Radiation monitoring can be used to protect the dental radiographer and includes monitoring of 

    • Equipment

    • Personnel

    • Both equipment and personnel

    • Drywall for residual radiation

    Correct Answer
    A. Both equipment and personnel
    Explanation
    Radiation monitoring is crucial for protecting the dental radiographer from the harmful effects of radiation. It involves monitoring both the equipment and personnel involved in dental radiography. Monitoring the equipment ensures that it is functioning properly and emitting safe levels of radiation. Meanwhile, monitoring the personnel helps to assess their exposure to radiation and take necessary precautions to minimize any potential risks. By monitoring both equipment and personnel, dental radiographers can ensure a safe working environment and minimize the potential health hazards associated with radiation exposure.

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  • 18. 

    Radiation legislation varies greatly from state to state. for example, in some states a dental radiographer must successfully complete a radiation safety examination before he or she may expose dental xrays

    • Both statements are true

    • Both statements are false

    • First is true second is false

    • First is false second is true

    Correct Answer
    A. Both statements are true
    Explanation
    The explanation for the given correct answer, "both statements are true," is that the statement accurately reflects the information provided in the question. It states that radiation legislation varies greatly from state to state, which implies that the regulations regarding dental radiographers and radiation safety examinations can differ as well. The second statement confirms that both statements are true, indicating that in some states, dental radiographers must pass a radiation safety examination before exposing dental x-rays.

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  • 19. 

    The film emulsion is composed of a homogenous mixture of

    • Calcium tungstate and lead salt crystals

    • Gelatin and barium salt crystals

    • Gelatin and silver halide crystals

    • Primer and silver halide crystals

    Correct Answer
    A. Gelatin and silver halide crystals
    Explanation
    The film emulsion is composed of gelatin and silver halide crystals. Gelatin is used as a binder to hold the silver halide crystals together and provide a stable base for the emulsion. Silver halide crystals, typically silver bromide or silver chloride, are sensitive to light and are responsible for capturing the image when exposed to light. When light hits the emulsion, the silver halide crystals undergo a chemical reaction, forming a latent image that can be developed and fixed to create a visible image on the film.

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  • 20. 

    Developer solution should be changed _________________________ fixer solution

    • Twice as often

    • More often than

    • Less often than

    • At the same time as

    Correct Answer
    A. At the same time as
    Explanation
    The correct answer is "at the same time as". This means that the developer solution and the fixer solution should be changed simultaneously or together.

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  • 21. 

    Quality assurance monitoring includes a detailed log of all tests performed. a monitoring schedule should be posted in the dental office

    • Both are true

    • Both are false

    • First is true second is false

    • First is false second is true

    Correct Answer
    A. Both are true
    Explanation
    The explanation for the given correct answer is that quality assurance monitoring does indeed include a detailed log of all tests performed. This log helps track the testing process and provides a record of the tests conducted. Additionally, it is recommended to have a monitoring schedule posted in the dental office to ensure that the monitoring activities are carried out regularly and consistently. This schedule helps in organizing and planning the monitoring activities effectively. Therefore, both statements are true.

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  • 22. 

    The overall appearance of your films is too dark. which of the following is the cause of this error?

    • Film was in the developer too long

    • Film was in the fixer too long 

    • The white light was left on while opening the film packets

    • Film was left is the water bath too long

    Correct Answer
    A. Film was in the developer too long
    Explanation
    The overall appearance of the films being too dark indicates that the film was in the developer for an extended period of time. Developer is a chemical solution used to process the film and bring out the image. If the film is left in the developer for too long, it can cause overdevelopment, resulting in a darker appearance.

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  • 23. 

    All ionizing radiations cause damage to living tissues. although very little radiation is used in dentistry, damage to the cells does occur.

    • Both are true

    • Both are false

    • First is true. second is false.

    • First is false. second is true.

    Correct Answer
    A. Both are true
    Explanation
    Both statements in the question are true. Ionizing radiations, including those used in dentistry, do cause damage to living tissues. Although the amount of radiation used in dentistry is minimal, it can still lead to cell damage. Therefore, both statements are correct.

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  • 24. 

    An underexposed receptor results from

    • Insufficient exposure time

    • Inadequate tissue density

    • Excessive mA

    • Excessive kV

    Correct Answer
    A. Insufficient exposure time
    Explanation
    An underexposed receptor occurs when the exposure time is not sufficient. This means that the receptor did not receive enough radiation during the exposure, resulting in a darker image. Insufficient exposure time can be caused by factors such as a short exposure duration or a low radiation output from the X-ray machine.

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  • 25. 

    Reusable receporholders must be __________ after each use

    • Rinsed with tap water

    • Wiped with disinfectant

    • Placed in an immersion disinfectant

    • Sterilized

    Correct Answer
    A. Sterilized
    Explanation
    Reusable receptor holders must be sterilized after each use to ensure that they are free from any microorganisms or contaminants. Sterilization is the most effective method to eliminate all forms of bacteria, viruses, and fungi that may be present on the surface of the holder. This process ensures that the receptor holders are safe to use for the next patient and helps prevent the spread of infections.

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  • 26. 

    To prevent a dropped receptor corner

    • Change the horizontal angulation

    • Increase the vertical angulation

    • Decrease the vertical angulation

    • Make certain the edge of the receptor is placed parallel to the incisal-occlusal surfaces of the teeth

    Correct Answer
    A. Make certain the edge of the receptor is placed parallel to the incisal-occlusal surfaces of the teeth
    Explanation
    Placing the edge of the receptor parallel to the incisal-occlusal surfaces of the teeth helps to prevent a dropped receptor corner. This ensures that the receptor is properly aligned with the teeth and reduces the risk of the receptor slipping or falling out of position during the imaging process. By maintaining parallel alignment, the receptor remains stable, providing accurate and clear images for diagnosis and treatment planning.

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  • 27. 

    Cellular injuries following the latent period may includ 1. cell death 2.cessation of mitotic activity and 3. abnormal mitotic activity

    • 1, 2 ,3

    • 1, 2

    • 1, 3

    • 1 only

    Correct Answer
    A. 1, 2 ,3
    Explanation
    Cellular injuries following the latent period may include cell death, cessation of mitotic activity, and abnormal mitotic activity. This means that after a certain period of time, cells may undergo death, stop dividing, or exhibit abnormal division. These cellular injuries can occur due to various factors such as physical trauma, chemical exposure, or genetic abnormalities. It is important to understand and study these cellular injuries to develop effective treatments and preventive measures for various diseases and conditions.

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  • 28. 

    On some dental xray machines only the _______________ can be altered; the other parameters are preset by the manufacturer

    • KV

    • Exposure time

    • PID length

    • MA

    Correct Answer
    A. Exposure time
    Explanation
    On some dental x-ray machines, only the exposure time can be altered, while the other parameters such as kV, PID length, and mA are preset by the manufacturer. This means that the operator can adjust the duration of the x-ray exposure, but not the voltage (kV), the length of the position-indicating device (PID), or the current (mA) settings. The exposure time refers to the length of time that the x-ray beam is directed towards the patient's teeth or mouth.

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  • 29. 

    When would you use a two film packet when taking radiographs on your patient

    • For maxillary radiographs where the bone is denser than in the mandible 

    • To prevent more photons from passing through the film into patient tissue

    • When duplicate record of a radiographic examination is needed 

    • Routinely for adults; however, a one-film packet should be used for children and adolescents

    Correct Answer
    A. When duplicate record of a radiographic examination is needed 
    Explanation
    When a duplicate record of a radiographic examination is needed, a two film packet would be used. This allows for an additional copy of the radiograph to be made, providing a backup or an extra copy for reference. This is important in cases where the original radiograph may be lost, damaged, or needed for multiple purposes. Using a two film packet ensures that there is a duplicate record available without the need for retaking the radiograph.

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  • 30. 

    Which of the following statements is true about the development step in film processing

    • The unexposed, unenergized halide crystals are removed from the film

    • A subtraction reaction causes the black metallic silver to remain on the film

    • Developing is the first step in processing film

    • The film emulsion is hardened during the developmental stage

    Correct Answer
    A. Developing is the first step in processing film
    Explanation
    The correct answer is "developing is the first step in processing film". This statement is true because the developing step is indeed the initial stage in film processing. During developing, the exposed silver halide crystals on the film are converted into metallic silver, forming the latent image. This process is essential for capturing the image on the film before further processing steps such as fixing and washing.

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  • 31. 

    More radiation damage takes place with high dose rates. because a rapid delivery of radiation does not allow time for cellular damage to be repaired

    • Both are true

    • Both are false

    • First is true second is false

    • First is false second is true

    Correct Answer
    A. Both are true
    Explanation
    Both statements are true. High dose rates of radiation result in more radiation damage because the rapid delivery of radiation does not allow enough time for cellular damage to be repaired. This is because higher dose rates overwhelm the cellular repair mechanisms, leading to increased damage.

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  • 32. 

    The potential risk of dental radiography inducing a fatal cancer in an individual is about ___________

    • 1/10

    • 1/100

    • 1/1000

    • 3/1,000,000

    Correct Answer
    A. 3/1,000,000
    Explanation
    The potential risk of dental radiography inducing a fatal cancer in an individual is estimated to be 3 in 1,000,000. This means that the likelihood of dental radiography causing a fatal cancer is very low, with only 3 cases expected to occur out of every 1,000,000 individuals who undergo the procedure.

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  • 33. 

    A screen that produces a green light must be paired with a ___________ - sensitive screen film

    • Red

    • Yellow

    • Blue

    • Green

    Correct Answer
    A. Green
    Explanation
    A screen that produces a green light must be paired with a green-sensitive screen film. This is because the screen film needs to be able to capture and process the green light emitted by the screen accurately. Using a screen film that is sensitive to a different color, such as red, yellow, or blue, would result in inaccurate color representation and possibly a distorted image on the screen. Therefore, the correct choice is green.

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  • 34. 

    If the image of the coin appears on the processed radiograph after the coin test 

    • The safe light is safe to use with that type of film

    • The safelight is not safe to use with that type of film

    • Conduct the test again with the dark room door closed rather than open 

    • Conduct the test again with the safe light off rather than on

    Correct Answer
    A. The safelight is not safe to use with that type of film
    Explanation
    If the image of the coin appears on the processed radiograph after the coin test, it means that the safelight is not safe to use with that type of film. The purpose of the coin test is to determine if the safelight is emitting the correct wavelength of light that won't affect the film. If the image of the coin is visible, it indicates that the safelight is emitting light that is exposing the film and causing unwanted images to appear. Therefore, it is not safe to use the safelight with that type of film.

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  • 35. 

    Which of the following is an example of stochastic effects

    • Erythema

    • Cancer

    • Hair loss

    • Radiation sickness

    Correct Answer
    A. Cancer
    Explanation
    Cancer is an example of stochastic effects because it is a random and unpredictable outcome that can occur as a result of exposure to radiation. Stochastic effects do not have a threshold level of exposure and the probability of occurrence increases with higher levels of exposure. In the case of cancer, the development of the disease is not guaranteed even with low levels of radiation exposure, but the risk increases with higher doses. This is in contrast to deterministic effects, where there is a direct cause and effect relationship between exposure and the severity of the effect.

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  • 36. 

    Parllel is defined as

    • Cutting across or through

    • Intersecting or forming a right angle

    • Moving or lying in the same plane, always separated by the same distance and not intersecting

    • An angle of 90 degrees formed by two lines perpendicular to eachother

    Correct Answer
    A. Moving or lying in the same plane, always separated by the same distance and not intersecting
    Explanation
    The correct answer is "moving or lying in the same plane, always separated by the same distance and not intersecting." This definition accurately describes parallel lines, which are lines that never meet or intersect and are always equidistant from each other. They can be thought of as "moving" in the same direction in the same plane, maintaining a constant distance between them.

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  • 37. 

    If you are taking an anterior image sequence, which tooth do the authors recommend you begin with

    • 6

    • 8

    • 9

    • 11

    Correct Answer
    A. 6
    Explanation
    The authors recommend beginning with tooth number 6 when taking an anterior image sequence.

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  • 38. 

    Your left premolar bitewing image is lighter than the rest of the images and has a herringbone pattern. what can you do to prevent this problem from occuring? when the film is reversed,

    • Change vertical angulation

    • Make sure you do not double expose your receptor

    • Make sure the film side is facing the PID

    • Make sure the patient doesnt move

    Correct Answer
    A. Make sure the film side is facing the PID
    Explanation
    To prevent the left premolar bitewing image from being lighter and having a herringbone pattern, it is important to make sure that the film side is facing the PID (Position-Indicating Device). This means that the film should be positioned correctly in relation to the X-ray machine, ensuring that the X-ray beam passes through the film properly. If the film is facing the wrong way, it can result in improper exposure and artifacts like the herringbone pattern.

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  • 39. 

    Which of the following cells would be the most sensitive to xrays

    • Nerve

    • Bone

    • Muscle

    • Blood

    Correct Answer
    A. Blood
    Explanation
    Blood cells would be the most sensitive to X-rays because they are constantly dividing and replicating, making them more susceptible to damage from radiation. Additionally, blood cells are located throughout the body and are in direct contact with X-rays, increasing their exposure. Nerve cells, bone cells, and muscle cells are not as actively dividing as blood cells, making them less sensitive to the effects of X-rays.

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  • 40. 

    Which of the following receptor holders include aiming rings that aid in the alignment of the position-indicating device (PID) with the receptor

    • Hemostat with bite-block

    • Stabe bite-block

    • Snap-a-ray receptor holder

    • Rinn xcp instruments

    Correct Answer
    A. Rinn xcp instruments
    Explanation
    Rinn XCP instruments include aiming rings that aid in the alignment of the position-indicating device (PID) with the receptor. This feature helps to ensure accurate positioning of the PID and receptor, resulting in clear and precise dental radiographs. The aiming rings act as guides to assist the dental professional in aligning the X-ray beam and receptor properly, reducing the risk of errors and enhancing the quality of the images obtained.

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  • 41. 

    The dental radiographer should be careful not to stimulate the patients gag reflex. once the gag reflex is stimulated, the patient may gag on receptors that could normally be tolerated

    • Both statements are true

    • Both are false

    • First is true second is false

    • First is false second is true

    Correct Answer
    A. Both statements are true
    Explanation
    The explanation for the given correct answer is that the statement "the dental radiographer should be careful not to stimulate the patient's gag reflex" is true because stimulating the gag reflex can cause discomfort and potential gagging in the patient. The statement "once the gag reflex is stimulated, the patient may gag on receptors that could normally be tolerated" is also true because when the gag reflex is triggered, the patient's tolerance for certain objects or sensations in the mouth may decrease, leading to gagging.

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  • 42. 

    The bombing at nagasaki and hiroshima took place in 1945; an increase in the incidence of cancer was noted in 1956. which effects apply to the cancer incidence

    • Short term, somatic

    • Long term, somatic

    • Short tern, genetic

    • Long term, genetic

    Correct Answer
    A. Long term, somatic
    Explanation
    The bombing at Nagasaki and Hiroshima in 1945 resulted in an increase in the incidence of cancer in 1956. This suggests that the effects of the bombing on cancer incidence were long term, meaning they persisted over a significant period of time. Additionally, the effects were somatic, meaning they affected the body's cells and tissues rather than being passed on through genetic changes.

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  • 43. 

    Which of the following is a disposable receptor holder designed for one time use only 

    • Rinn xcp

    • Precision receptor holders

    • Stable bite-block

    • Snap-a-ray receptor holder

    Correct Answer
    A. Stable bite-block
    Explanation
    The stable bite-block is a disposable receptor holder designed for one-time use only. This means that it is intended to be used once and then discarded. The other options, such as the Rinn XCP, precision receptor holders, and snap-a-ray receptor holder, may be reusable or designed for multiple uses. However, the stable bite-block is specifically designed to be disposable, providing a hygienic and convenient option for dental procedures.

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  • 44. 

    What specific mechanism of radiation may result in the formation of hydrogen peroxide when xray energy is absorbed by patients?

    • An ejected high-speed electron may interact with other atoms within absorbing

    • Free radical formation created by the ionization of water may occur

    • Unequal charge distribution may result in negative electrical potential

    • Creation of a magnetic field may cause polarization

    Correct Answer
    A. Free radical formation created by the ionization of water may occur
    Explanation
    When X-ray energy is absorbed by patients, ionization of water molecules can occur. This ionization process can lead to the formation of free radicals, which are highly reactive molecules with unpaired electrons. These free radicals can react with other atoms or molecules, including hydrogen peroxide, leading to its formation. Therefore, the specific mechanism of radiation that may result in the formation of hydrogen peroxide is the free radical formation created by the ionization of water.

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  • 45. 

    A 1 in 1 million risk of fatal outcome is associated with which of the following activities

    • Riding 10 miles on a bike

    • Riding 300 miles in an auto

    • Riding 1000 miles in an airplane

    • All three activities

    Correct Answer
    A. All three activities
    Explanation
    All three activities (riding 10 miles on a bike, riding 300 miles in an auto, riding 1000 miles in an airplane) are associated with a 1 in 1 million risk of a fatal outcome. This means that the likelihood of a fatal outcome is the same for all three activities, despite the differences in distance and mode of transportation.

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  • 46. 

    What is the purpose of the lead foil sheet found within the film packet

    • To cover the film and shield the film from light

    • To protect the film from moisture

    • To shield the film from primary radiation emitted by the xray tubehead

    • To shield the film from secondary backscatter radiation

    Correct Answer
    A. To shield the film from secondary backscatter radiation
    Explanation
    The purpose of the lead foil sheet found within the film packet is to shield the film from secondary backscatter radiation. Backscatter radiation occurs when primary radiation interacts with objects and is deflected in different directions. This can cause unwanted exposure and fogging on the film. The lead foil sheet acts as a barrier, preventing the backscatter radiation from reaching the film and ensuring clear and accurate imaging.

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  • 47. 

    __________ refers to the total amount of radiation that is reveived or absorbed

    • Total dose

    • Dose rate

    • Amount of tissue irradiated

    • Cell sensitivity

    Correct Answer
    A. Total dose
    Explanation
    Total dose refers to the total amount of radiation that is received or absorbed by an object or organism. It is a measure of the cumulative exposure to radiation over a specific period of time. The total dose takes into account both the intensity and duration of the radiation exposure. This measurement is important in assessing the potential health effects of radiation and determining appropriate safety measures.

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  • 48. 

    According to the text, a size 1 receptor is always positioned with the long portion of the receptor in a  ______ direction, in a size 2 receptor is always positioned with the long portion of the receptor in a _______ direction

    • Vertical, vertical

    • Horizontal, horizontal

    • Vertical, horizontal

    • Horizontal, vertical

    Correct Answer
    A. Vertical, horizontal
    Explanation
    According to the text, a size 1 receptor is always positioned with the long portion of the receptor in a vertical direction, while a size 2 receptor is always positioned with the long portion of the receptor in a horizontal direction.

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  • 49. 

    The view box should emit a uniform subbdued light when it is functioning properly. permanently discolored plexiglas surfaces and blackened fluorescent light bulbs must be replaced.

    • Both are true

    • Both are false

    • First is true, second is false

    • First is false second is true

    Correct Answer
    A. Both are true
    Explanation
    The explanation for the given correct answer, which is "both are true," is that when the view box is functioning properly, it should emit a uniform subdued light. This means that the light should be evenly distributed and not too bright or harsh. Additionally, if the plexiglas surfaces are permanently discolored and the fluorescent light bulbs are blackened, they must be replaced. This implies that these issues indicate a malfunction or damage to the view box, further supporting the statement that both statements are true.

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Quiz Review Timeline (Updated): Sep 5, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Sep 05, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 29, 2019
    Quiz Created by
    Morgan
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