Radiography Imaging

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Radiography Imaging - Quiz

In this quiz, we’ll be looking at the different imaging techniques in the process of radiography – which uses X-rays among other machines to create images of the internal structures of certain objects. What can you tell us?


Questions and Answers
  • 1. 

    What is needed to cause the e-stream to accelerate at an extremely high speed from the cathode to the anode?

    • A.

      MAs

    • B.

      KVp (high Voltage)

    • C.

      Electric

    • D.

      Light

    Correct Answer
    B. KVp (high Voltage)
    Explanation
    To cause the e-stream to accelerate at an extremely high speed from the cathode to the anode, a high voltage, specifically kVp (kilovolt peak), is needed. The high voltage creates a strong electric field between the cathode and anode, which accelerates the electrons in the e-stream. This acceleration results in the e-stream moving at a high speed towards the anode. The other options mentioned, mAs (milliamperes per second), electric, and light, do not directly contribute to the acceleration of the e-stream.

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  • 2. 

    What do the stream of electrons need to do in order to produce an x-ray?

    • A.

      Speed up

    • B.

      Slow down

    • C.

      Constant speed

    • D.

      Stop

    Correct Answer
    B. Slow down
    Explanation
    When stream of electrons slows down, it loses energy. This energy loss causes the electrons to emit X-rays. Therefore, in order to produce an X-ray, the stream of electrons needs to slow down.

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  • 3. 

    What are (6) characteristics of x-rays?

    • A.

      Photons/ bundles of energy

    • B.

      Highly penetrating

    • C.

      Invisible

    • D.

      Travel at speed of light

    • E.

      Travel in straight lines, diverge from point of origin

    • F.

      Have different energies

    Correct Answer(s)
    A. Photons/ bundles of energy
    B. Highly penetrating
    C. Invisible
    D. Travel at speed of light
    E. Travel in straight lines, diverge from point of origin
    F. Have different energies
    Explanation
    X-rays are characterized by being photons or bundles of energy, which allows them to interact with matter. They are highly penetrating, meaning they can pass through various materials. X-rays are invisible to the human eye and travel at the speed of light. They travel in straight lines but can diverge from their point of origin. Additionally, x-rays have different energies, which can be used to differentiate between different types of tissues in medical imaging.

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  • 4. 

    What are the major types of image receptors?

    • A.

      Film / screen

    • B.

      Digital

    • C.

      Fluoroscopic

    Correct Answer(s)
    A. Film / screen
    B. Digital
    C. Fluoroscopic
    Explanation
    The major types of image receptors are film/screen, digital, and fluoroscopic. Film/screen is a traditional method where X-rays are captured on a film and then developed. Digital imaging uses electronic sensors to capture X-rays, which are then converted into digital images. Fluoroscopic imaging involves real-time X-ray imaging, where the X-rays pass through the patient and create a continuous image on a screen. These different types of image receptors offer various advantages and applications in medical imaging.

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  • 5. 

    What does the Remnant beam do?

    Correct Answer(s)
    produces the image
    Explanation
    The Remnant beam produces the image.

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  • 6. 

    What happens when scatter radiation reaches the IR, what will it do?

    • A.

      Cause a fogging effect (Grey Effect)

    • B.

      White effect

    • C.

      Does not show up

    • D.

      A normal image

    Correct Answer
    A. Cause a fogging effect (Grey Effect)
    Explanation
    When scatter radiation reaches the image receptor (IR), it causes a fogging effect, also known as the grey effect. This occurs because scatter radiation contributes to the overall exposure of the IR, leading to a decrease in image contrast and the appearance of a hazy or greyish background. This can reduce the visibility of important anatomical details and potentially affect the diagnostic quality of the image.

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  • 7. 

    Attenuation is a process by which the primary beam is reduced in energy as it passes through the patient (Absorbed)

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Attenuation refers to the reduction in energy of the primary beam as it passes through the patient. This reduction occurs because the X-ray photons are absorbed by the tissues and structures within the patient's body. Therefore, the statement that attenuation is a process by which the primary beam is reduced in energy as it passes through the patient is true.

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  • 8. 

    When does Attenuation vary?

    • A.

      Different types of body tissue

    • B.

      Bone (White)

    • C.

      Muscle

    • D.

      Heart (most dense muscle of body- White)

    Correct Answer(s)
    A. Different types of body tissue
    B. Bone (White)
    C. Muscle
    D. Heart (most dense muscle of body- White)
    Explanation
    Attenuation refers to the reduction in the intensity of a signal or energy as it passes through a medium. In the context of the given options, attenuation varies depending on the different types of body tissue. Each type of tissue has a different density and composition, which affects how much the signal is absorbed or scattered as it passes through. Bone, being a dense tissue, attenuates the signal more compared to muscle or heart tissue. The heart, being the most dense muscle in the body, also contributes to attenuation. Therefore, the correct answer includes different types of body tissue, bone, muscle, and heart.

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  • 9. 

    A difference of attenuation causes a formation of the image?

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Attenuation refers to the reduction in intensity of a signal as it travels through a medium. In the context of imaging, a difference in attenuation can occur when different tissues or structures in the body absorb or scatter the imaging signal to varying degrees. This difference in attenuation can lead to the formation of an image, as it allows for the differentiation of tissues and structures based on their varying levels of signal intensity. Therefore, it is true that a difference in attenuation causes the formation of an image.

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  • 10. 

    What are some exposure factors? (aka Technique)

    • A.

      KVp

    • B.

      Ma

    • C.

      Sec

    Correct Answer(s)
    A. KVp
    B. Ma
    C. Sec
    Explanation
    Exposure factors, also known as techniques, are parameters that are adjusted to control the amount of radiation exposure during imaging procedures. KVp (kilovolt peak), ma (milliamperage), and sec (exposure time in seconds) are all examples of exposure factors. KVp determines the quality of the x-ray beam, ma controls the quantity of radiation produced, and sec determines the duration of the exposure. By adjusting these factors, radiographers can optimize image quality while minimizing patient radiation dose.

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  • 11. 

    What is under the direct control of the radiographer to produce quality radiographs?

    • A.

      Knowledge

    • B.

      Practice

    • C.

      Skill

    • D.

      Technique

    Correct Answer
    D. Technique
    Explanation
    Technique refers to the specific procedures and methods used by the radiographer to produce quality radiographs. It involves factors such as positioning the patient correctly, selecting the appropriate exposure settings, and ensuring proper image processing. The radiographer has direct control over these technical aspects and must possess the necessary knowledge, practice, and skill to execute them effectively.

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  • 12. 

    What DIRECTLY controls the energy/penetrating ability of the primary beam?

    • A.

      MAs

    • B.

      KVp

    • C.

      Force

    Correct Answer
    B. KVp
    Explanation
    KVp, or kilovoltage peak, directly controls the energy or penetrating ability of the primary beam in radiography. Increasing the KVp increases the energy of the X-ray photons, resulting in a higher penetrating ability. Conversely, decreasing the KVp decreases the energy and penetrating ability of the X-ray photons. Therefore, KVp is the parameter that directly controls the energy/penetrating ability of the primary beam in radiography.

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  • 13. 

    If the KVp has more energy what does it have?

    • A.

      More penetrating force

    • B.

      Less penetrating force

    • C.

      Same penetrating force

    • D.

      No penetrating force

    Correct Answer
    A. More penetrating force
    Explanation
    When the KVp (kilovolt peak) is increased, it means that the X-ray machine is generating X-rays with higher energy levels. X-rays with higher energy have greater penetrating power, meaning they can pass through denser materials more easily. Therefore, when the KVp has more energy, it has more penetrating force.

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  • 14. 

    If the KVp is increased what kind of image do you get?

    • A.

      Lighter image

    • B.

      Darker image

    • C.

      No image

    Correct Answer
    B. Darker image
    Explanation
    If the KVp (kilovoltage peak) is increased, it means that the X-ray machine is producing X-rays with higher energy levels. Higher energy X-rays have the ability to penetrate through objects more easily, resulting in less absorption and a darker image. Therefore, increasing the KVp will result in a darker image.

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  • 15. 

    What is beam quality?

    • A.

      Penetrating ability

    • B.

      Energy

    • C.

      Time

    Correct Answer(s)
    A. Penetrating ability
    B. Energy
    Explanation
    Beam quality refers to the characteristics of a laser beam that determine its performance and effectiveness. Penetrating ability refers to the ability of the laser beam to penetrate and interact with a material or target. Energy is another important aspect of beam quality as it determines the power and intensity of the laser beam. Therefore, the correct answer is penetrating ability and energy as they both play a crucial role in defining the beam quality of a laser.

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  • 16. 

    What controls beam quality?

    • A.

      MAs

    • B.

      KVp

    • C.

      Seconds

    • D.

      Radiographer

    Correct Answer
    B. KVp
    Explanation
    The correct answer is KVp. KVp stands for kilovoltage peak and it is a control parameter in radiography that affects the quality of the x-ray beam. Increasing the KVp results in a higher energy beam, which can penetrate the body more effectively and produce a higher quality image. Therefore, KVp plays a crucial role in controlling the beam quality in radiography.

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  • 17. 

    What does KVp INDIRECTLY control? (15% rule)

    • A.

      Quality

    • B.

      Quantity

    • C.

      Penetrating ability

    • D.

      Peak

    Correct Answer
    B. Quantity
    Explanation
    KVp indirectly controls the quantity of x-rays produced. The higher the KVp, the greater the energy of the x-rays, resulting in a larger number of x-rays produced. Therefore, increasing the KVp will increase the quantity of x-rays, while decreasing the KVp will decrease the quantity of x-rays.

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  • 18. 

    What is the source of x-rays?

    • A.

      Cathode

    • B.

      Anode

    • C.

      Target

    • D.

      Rotating anode

    Correct Answer
    C. Target
    Explanation
    The source of x-rays is the target. When high-energy electrons from the cathode strike the anode, they interact with the target material, which can be made of tungsten or other heavy metals. This interaction causes the emission of x-rays. The target material is specifically designed to produce x-rays efficiently by converting the kinetic energy of the electrons into electromagnetic radiation. Therefore, the target is the source of x-rays in this context.

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  • 19. 

    Changing either mA or S will cause a change in  the degree of blackening?

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Changing either mA or S will cause a change in the degree of blackening because mA refers to the milliamperage, which determines the amount of current passing through the X-ray tube. Increasing mA will result in a higher current and therefore a darker image. Similarly, changing S, which stands for exposure time, will also affect the degree of blackening. Increasing the exposure time will allow more X-rays to reach the film or detector, resulting in a darker image. Therefore, both mA and S have an impact on the degree of blackening.

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  • 20. 

    Less radiation makes an image?

    • A.

      Lighter

    • B.

      Darker

    • C.

      Invisible

    • D.

      Nothing changes

    Correct Answer
    A. Lighter
    Explanation
    When it is mentioned that "less radiation makes an image," it implies that there is a decrease in the amount of radiation used to capture the image. In imaging, radiation refers to the intensity of light or other electromagnetic waves used to create the image. When there is less radiation, it means that there is less light or electromagnetic waves being used. Therefore, the image produced will be lighter because there is less intensity of light or waves to create a darker image.

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  • 21. 

    More radiaiton makes an image

    • A.

      Lighter

    • B.

      Invisible

    • C.

      Nothing changes

    • D.

      Darker

    Correct Answer
    D. Darker
    Explanation
    When it comes to imaging, more radiation refers to an increase in the intensity or amount of radiation being used. In this context, the statement suggests that increasing the radiation will result in a darker image. This is because higher levels of radiation tend to darken or increase the density of the image, making it appear darker.

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  • 22. 

    The degree of blackening an image?

    • A.

      Density (mAs)

    • B.

      Contrast

    • C.

      SID

    • D.

      Scatter radiation

    Correct Answer
    A. Density (mAs)
    Explanation
    The degree of blackening an image is determined by the density (mAs) of the X-ray exposure. Density refers to the overall darkness or lightness of the image, with higher mAs resulting in a darker image and lower mAs resulting in a lighter image. Therefore, adjusting the mAs can control the density of the image.

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  • 23. 

    The visible difference between adjacent radiographic densities?

    • A.

      Density

    • B.

      Contrast

    • C.

      KVp

    • D.

      MAs

    Correct Answer
    B. Contrast
    Explanation
    Contrast refers to the visible difference between adjacent radiographic densities. It is a measure of how well different structures within an image can be distinguished from one another. Higher contrast means there is a greater difference in density between adjacent structures, resulting in a clearer and more defined image. Lower contrast, on the other hand, means that the density difference between adjacent structures is smaller, resulting in a less distinct image.

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  • 24. 

    To result in equivalent mAs values, mA & time must change in the opposite direction by the same factor; If you raise one you have to lower the other

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The statement is true because in order to maintain equivalent mAs values (which represents the total amount of radiation delivered to the patient), the mA (milliamperage) and time must change in opposite directions by the same factor. This means that if you increase the mA, you must decrease the time, and vice versa. This ensures that the total amount of radiation delivered remains the same, regardless of the specific combination of mA and time used.

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  • 25. 

    What does KVp do?

    • A.

      Low energy level

    • B.

      Controls penetrating ability

    • C.

      Controls time

    • D.

      None of the above

    Correct Answer
    B. Controls penetrating ability
    Explanation
    KVp stands for kilovolt peak, which is a unit used to measure the potential difference in X-ray machines. This potential difference determines the energy level of the X-rays produced. By controlling the KVp, one can adjust the penetrating ability of the X-rays. Higher KVp values result in X-rays with higher energy levels, allowing them to penetrate through denser tissues. Therefore, the correct answer is that KVp controls the penetrating ability of the X-rays.

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  • 26. 

    Raising the KVp by 15% will?

    Correct Answer
    Double
    Explanation
    Raising the KVp (kilovoltage peak) by 15% will result in doubling the amount of radiation exposure. This is because increasing the KVp by 15% will lead to an increase in the energy of the X-ray photons, which in turn increases the penetration power of the X-rays. As a result, the amount of radiation reaching the image receptor will be doubled.

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  • 27. 

    Decreasing the KVp by 15% will?

    Correct Answer
    Halve
    Explanation
    Decreasing the KVp (kilovoltage peak) by 15% means reducing it by 15% of its original value. This reduction will result in halving the value of KVp, as 15% is equivalent to half of 30% (which is the value required for halving). Therefore, the correct answer is "Halve."

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  • 28. 

    What does KVp control?

    • A.

      Quality

    • B.

      Quantity

    • C.

      Contrast

    Correct Answer(s)
    B. Quantity
    C. Contrast
    Explanation
    KVp (kilovoltage peak) controls the quantity and contrast of the X-ray beam. Quantity refers to the number of X-rays produced, and by adjusting the KVp, the quantity of X-rays can be controlled. Higher KVp values result in a greater quantity of X-rays, while lower values result in a lower quantity. Contrast refers to the difference in density between different structures in the body. By adjusting the KVp, the contrast can also be controlled. Higher KVp values result in lower contrast, while lower values result in higher contrast.

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  • 29. 

    If you lower you KVp, what happens to your image?

    • A.

      Nothing

    • B.

      Darker

    • C.

      Lighter

    Correct Answer
    C. Lighter
    Explanation
    Lowering the KVp (kilovoltage peak) in radiography decreases the overall energy of the X-ray beam. This reduction in energy leads to a decrease in the penetration ability of the X-rays, resulting in a lighter image. Therefore, when you lower the KVp, the image appears lighter.

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  • 30. 

    How does distance affect density?

    • A.

      15% Rule

    • B.

      Inverse Square Law

    • C.

      Stay the same

    • D.

      Has no affect

    Correct Answer
    B. Inverse Square Law
    Explanation
    The Inverse Square Law states that as distance increases, the density decreases. This means that the density of a substance or object decreases exponentially as the distance from it increases. The law states that the intensity of a physical quantity (such as light, sound, or gravitational force) is inversely proportional to the square of the distance from the source. Therefore, as the distance increases, the density decreases accordingly.

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  • 31. 

    How is Beam Modification used?

    • A.

      Scatter Radiation

    • B.

      Filtration

    • C.

      Beam Limitation

    Correct Answer(s)
    B. Filtration
    C. Beam Limitation
    Explanation
    Beam Modification is used through filtration and beam limitation. Filtration refers to the process of removing unwanted or harmful radiation from the beam, typically by passing it through a material that absorbs or attenuates certain wavelengths. This helps to ensure that only the desired radiation reaches the target area, reducing the risk of unnecessary exposure. Beam limitation, on the other hand, involves restricting the size or shape of the beam to precisely target the desired area and avoid irradiating surrounding healthy tissues. Both techniques are essential in optimizing the effectiveness and safety of radiation therapy.

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  • 32. 

    How does Filtration remove patient exposure?

    • A.

      Removes Low energy non diagnostic photons

    • B.

      Removes exposure

    • C.

      Double their exposure

    Correct Answer
    A. Removes Low energy non diagnostic photons
    Explanation
    Filtration removes low energy non-diagnostic photons, which are photons that do not contribute to producing a clear and useful image. These photons only increase patient exposure to radiation without providing any diagnostic value. By removing these photons, filtration reduces the overall radiation dose that the patient is exposed to during a medical imaging procedure, thereby minimizing the potential risks associated with radiation exposure.

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  • 33. 

    What are types of Beam Limitations?

    • A.

      Cones

    • B.

      Cylinders

    • C.

      Collimators

    Correct Answer(s)
    A. Cones
    B. Cylinders
    C. Collimators
    Explanation
    The types of beam limitations are cones, cylinders, and collimators. These are devices used to control and shape the path and spread of a beam of energy or particles. Cones are typically used to focus or narrow the beam, cylinders are used to shape or direct the beam, and collimators are used to limit the size or range of the beam. These limitations are important in various fields such as medicine, physics, and engineering, where precise control and targeting of the beam is necessary.

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  • 34. 

    What are Grids?

    • A.

      Device to remove or absorb scatter radiation as possible

    • B.

      Props patient up

    • C.

      None of the above

    Correct Answer
    A. Device to remove or absorb scatter radiation as possible
    Explanation
    Grids are devices used in radiography to remove or absorb scatter radiation as much as possible. Scatter radiation is unwanted radiation that can reduce image quality by creating a foggy appearance. Grids consist of thin lead strips that are placed between the patient and the image receptor. These lead strips absorb the scattered radiation, allowing only the primary radiation to reach the image receptor. This helps in producing clearer and more accurate radiographic images.

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  • 35. 

    What consists of many lead strips separated by a radiolucent material placed between the patient and the IR?

    • A.

      Cones

    • B.

      Collimators

    • C.

      Cylinders

    • D.

      Grids

    Correct Answer
    D. Grids
    Explanation
    Grids consist of many lead strips separated by a radiolucent material placed between the patient and the IR. This arrangement helps to absorb scatter radiation and improve image quality by reducing the amount of scattered radiation that reaches the image receptor. Grids are commonly used in radiography to enhance image contrast and reduce the appearance of scattered radiation artifacts.

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  • 36. 

    What is a Grid Ratio?

    • A.

      Ratio of the height of the lead strips and the distance between them

    • B.

      15% rule

    • C.

      1 block

    • D.

      None of the above

    Correct Answer
    A. Ratio of the height of the lead strips and the distance between them
    Explanation
    Grid ratio refers to the relationship between the height of the lead strips and the distance between them in a grid used in radiography. It is a measure of the grid's ability to absorb scattered radiation while allowing primary radiation to pass through. A higher grid ratio indicates better scatter radiation absorption but also requires higher technique factors to maintain image quality. Therefore, the correct answer is "Ratio of the height of the lead strips and the distance between them."

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  • 37. 

    A higher ratio of lead strips will give a better clan up of scatter ratio

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    A higher ratio of lead strips will give a better clean up of scatter ratio because lead is a dense material that is effective in absorbing and blocking radiation. When there are more lead strips, there is a higher chance of scatter radiation being absorbed by the lead, reducing the scatter ratio. Therefore, increasing the ratio of lead strips will result in a better clean up of scatter ratio.

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  • 38. 

    A Film/Screen Combinations are cassettes with intensifying  screens that emit a specific color of light and the x-ray film that is sensitive to that same color of light

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Film/screen combinations are cassettes that contain intensifying screens and x-ray film. These screens emit a specific color of light that matches the sensitivity of the film. This combination enhances the visibility of the x-ray image by converting the X-ray energy into visible light. Therefore, the statement is true.

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  • 39. 

    System Speed is an arbitrary number given to a specific system. Average speed = 100

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The given statement states that "System Speed is an arbitrary number given to a specific system" and also mentions that the "Average speed = 100". This implies that the system speed is indeed an arbitrary number and the average speed of the system is 100. Therefore, the correct answer is True.

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  • 40. 

    The chemicals for processing must be at proper?

    • A.

      Temperature

    • B.

      Mixture

    • C.

      Enough in container

    Correct Answer(s)
    A. Temperature
    B. Mixture
    Explanation
    The chemicals for processing must be at the proper temperature and mixture. Temperature plays a crucial role in chemical reactions as it affects the rate and outcome of the reaction. If the temperature is too high or too low, it can lead to undesired results. Additionally, the mixture of chemicals is important as it determines the proportions and concentrations necessary for the reaction to occur effectively. If the chemicals are not properly mixed, it can lead to incomplete reactions or even dangerous situations. Therefore, both temperature and mixture are essential factors in ensuring successful chemical processing.

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  • 41. 

    Contrast is need to view the visibility of detail. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Contrast refers to the difference in color, tone, or brightness between different parts of an image. It is necessary to view the visibility of detail because it helps to make the details stand out and be more easily distinguishable. Without contrast, the details may blend together and become less visible. Therefore, the statement "Contrast is need to view the visibility of detail" is true.

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  • 42. 

    Main controlling factor of contrast?

    • A.

      MA

    • B.

      KVp

    • C.

      MAs

    • D.

      None of the above

    Correct Answer
    B. KVp
    Explanation
    The main controlling factor of contrast is KVp, which stands for kilovoltage peak. KVp determines the energy level of the X-ray beam, which directly affects the contrast of the resulting image. Higher KVp values result in a higher energy beam, producing lower contrast images with a wider range of gray tones. Lower KVp values, on the other hand, result in a lower energy beam, producing higher contrast images with a more distinct difference between black and white areas. Therefore, KVp is the primary factor that controls the overall contrast in an X-ray image.

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  • 43. 

    What happens if you increase KVp?

    • A.

      Contrast will go down

    • B.

      Contrast will go up

    • C.

      Remains the same

    • D.

      None of the above

    Correct Answer
    A. Contrast will go down
    Explanation
    Increasing the KVp (kilovolt peak) in radiography leads to an increase in the overall energy of the X-ray beam. This higher energy allows the X-rays to penetrate more through the body, resulting in less absorption and decreased contrast between different tissues. Therefore, the correct answer is that the contrast will go down when KVp is increased.

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  • 44. 

    What will happen if you lower KVp?

    • A.

      Contrast will go down

    • B.

      Contrast will go up

    • C.

      Remains the same

    • D.

      Nothing

    Correct Answer
    B. Contrast will go up
    Explanation
    If you lower kilovoltage peak (kVp), the contrast will go up. Lowering the kVp increases the overall contrast in the image by emphasizing the differences between tissues with different densities, resulting in a higher level of contrast between them. Therefore, the correct answer is: contrast will go up.

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  • 45. 

    What is the basis for radiographic contrast that attenuate the primary beam to differing degrees?

    • A.

      KVp

    • B.

      MAs

    • C.

      Differential Attenuation

    • D.

      Absorption

    Correct Answer
    C. Differential Attenuation
    Explanation
    Differential attenuation is the basis for radiographic contrast that attenuates the primary beam to differing degrees. This refers to the phenomenon where different tissues in the body absorb and scatter X-rays to varying extents. This differential absorption creates contrast in the resulting radiographic image, allowing for the visualization of different structures and abnormalities. KVp and mAs are factors that can be adjusted to control the overall exposure and brightness of the image, but they do not directly affect the differential attenuation of the X-rays.

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  • 46. 

    What is responsible for the production of densities of the radiograph?

    • A.

      KVp

    • B.

      MAs

    • C.

      Scatter Radiation

    • D.

      Absorption

    Correct Answer
    B. MAs
    Explanation
    mAs, or milliampere-seconds, is responsible for the production of densities on a radiograph. It refers to the product of the tube current (measured in milliamperes) and the exposure time (measured in seconds). Increasing mAs increases the number of X-ray photons produced, resulting in a higher density or darkness on the radiograph. Conversely, decreasing mAs reduces the number of X-ray photons, leading to a lower density or brightness on the radiograph. Therefore, mAs directly controls the overall darkness or brightness of the radiographic image.

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  • 47. 

    Changing the mAs will have an effect on the beam

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Changing the mAs (milliampere-seconds) will not have an effect on the beam. The mAs controls the quantity of X-rays produced, not the quality or characteristics of the beam. The quality of the X-ray beam is primarily determined by the kilovoltage (kVp) setting.

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  • 48. 

    What do Beam Modification result in?

    • A.

      Loss of gray tones

    • B.

      Higher contrast

    • C.

      MAs

    Correct Answer(s)
    A. Loss of gray tones
    B. Higher contrast
    Explanation
    Beam modification refers to any changes made to the X-ray beam during imaging. These modifications can include adjustments to the X-ray intensity, energy, or filtration. Loss of gray tones refers to a decrease in the range of shades of gray that can be seen on the image. This occurs when the beam modification results in a narrower range of X-ray intensities being captured. On the other hand, higher contrast refers to an increase in the difference between the lightest and darkest areas of the image. This occurs when the beam modification increases the difference in X-ray intensities between different tissues or structures. Therefore, beam modification can result in both a loss of gray tones and higher contrast in the image.

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  • 49. 

    Film/Screen Combinations are also used to produce a particular scale of contrast

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Film/Screen combinations are used in radiography to control the amount of radiation reaching the film, which in turn affects the scale of contrast in the resulting image. Different combinations of film and screens can be used to produce images with different levels of contrast. This allows radiographers to adjust the image to better visualize different types of tissues or structures within the body. Therefore, the statement that film/screen combinations are used to produce a particular scale of contrast is true.

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  • 50. 

    What specialty department uses Film/Screen Combinations?

    • A.

      MRI

    • B.

      Angiography

    • C.

      Mammography

    • D.

      CT

    Correct Answer
    C. Mammography
    Explanation
    Mammography is a specialty department that uses Film/Screen Combinations. This imaging technique is commonly used for screening and diagnosing breast cancer in women. Mammograms are X-ray images of the breast that are captured using a film/screen combination. The film records the X-ray image, while the screen intensifies the X-ray radiation, making it easier to detect any abnormalities or signs of cancer. Therefore, mammography is the correct answer for the given question.

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

  • Current Version
  • Mar 11, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 03, 2012
    Quiz Created by
    Justineobean
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