Radtech Simulation Examination 1

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  • 1/105 Questions

    Ultrasound or a Sonogram is generally described as a

    • "safe test because it does not use mutagenic ionizing radiation"
    • "the most hazardous of tests"
    • "complex and lengthy exam"
    • "not approved for pediatric patients"
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About This Quiz

This is your Radtech Simulation 1 for HAAD and other Gulf Exams.
The questions here are encountered last month based on feed backs from Gulf Countries.
You would be given 120 minutes to answer 100 items.
Passing Score would be 70 %
This is a LIMITED TAKEN TEST so You need a STRONG INTERNET CONNECTION to take this properly.
Correct Answers See morewill be displayed after the test, so Don't Exit Immediately.
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Radtech Simulation Examination 1 - Quiz

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  • 2. 

    Who discovered the x ray?

    • W.d coolidge

    • W.c.roentgen

    • O.walkhoff

    • Dr. kells

    • Dr. morton

    Correct Answer
    A. W.c.roentgen
    Explanation
    W.C. Roentgen is credited with the discovery of X-rays. In 1895, while experimenting with cathode rays, he noticed a fluorescent screen in his lab was glowing even though it was not directly exposed to the cathode rays. He concluded that a new type of ray was being emitted, which he named X-rays. Roentgen's discovery revolutionized the field of medicine and had numerous applications in various industries.

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  • 3. 

    What is a Fluoroscopy?

    • Shows continuous X-ray of the tissues and deep structures of the body

    • X ray of the thoracic region

    • Moving X Ray images of the foot

    • Live X-ray images of lungs

    Correct Answer
    A. Shows continuous X-ray of the tissues and deep structures of the body
    Explanation
    Fluoroscopy is a medical imaging technique that uses continuous X-ray to provide real-time images of the tissues and deep structures of the body. It allows healthcare professionals to visualize the movement and function of organs, muscles, and other structures. This technique is commonly used in procedures such as angiography, barium studies, and orthopedic surgeries. It provides valuable information for diagnosing and monitoring various conditions and guiding medical interventions.

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  • 4. 

    X rays were discovered in 1895 by W. C. Roentgen, who called them X rays because their nature was at first unknown; they are sometimes also called Roentgen, or Röntgen, rays.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    X rays were indeed discovered in 1895 by W. C. Roentgen, who named them X rays because their nature was initially unknown. They are also commonly referred to as Roentgen or Röntgen rays. Therefore, the statement "X rays were discovered in 1895 by W. C. Roentgen" is true.

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  • 5. 

    A screening mammogram is

    • A test to check for breast cancer in women who have no signs or symptoms of the disease

    • Involves 5 X rays of each breast

    • Done after a diagnostic mammogram

    • Performed by an Ultrasound Technologist

    Correct Answer
    A. A test to check for breast cancer in women who have no signs or symptoms of the disease
    Explanation
    A screening mammogram is a test that is performed to check for breast cancer in women who do not have any signs or symptoms of the disease. It involves taking 5 X-rays of each breast. It is not done after a diagnostic mammogram and is typically performed by a radiologist or a mammography technologist, not an ultrasound technologist.

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  • 6. 

    An MRA is different than an MRI because

    • It is a test that highlights and evaluates the arteries in the body. It can examine arteries in the brain,neck, chest and abdomen.

    • It is not different, it is actually the same thing.

    • The patient is positioned differently

    • An MRI shows the movement of blood flow and the MRA does not.

    Correct Answer
    A. It is a test that highlights and evaluates the arteries in the body. It can examine arteries in the brain,neck, chest and abdomen.
    Explanation
    An MRA (Magnetic Resonance Angiography) is different from an MRI (Magnetic Resonance Imaging) because it specifically focuses on highlighting and evaluating the arteries in the body, including those in the brain, neck, chest, and abdomen. While an MRI can also capture images of arteries, it is not specifically designed for this purpose. Additionally, an MRI can show the movement of blood flow, whereas an MRA does not provide this information.

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  • 7. 

    An “unseen” image is called a(an)

    • Image receptor (IR)

    • Radiation field

    • Latent image

    • Negative

    Correct Answer
    A. Latent image
    Explanation
    A latent image refers to an "unseen" image that is formed on a photosensitive surface, such as film or a digital sensor, after exposure to radiation. This image is not immediately visible and requires further processing, such as development or digital processing, to become visible. Therefore, the term "latent image" accurately describes an "unseen" image.

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  • 8. 

    PET stands for:

    • Proton Emission Tomography

    • Positron Emission Tomography

    • Parkinson's Epileptic Tomography

    • Positron Electric Tomography

    Correct Answer
    A. Positron Emission Tomography
    Explanation
    Positron Emission Tomography (PET) is a medical imaging technique that uses radioactive tracers to detect and measure metabolic activity in the body. It is commonly used in the diagnosis and monitoring of various diseases, including cancer, neurological disorders, and cardiovascular conditions. PET scans provide detailed images of the body's organs and tissues, allowing doctors to identify abnormalities and assess the effectiveness of treatments. The use of positron-emitting radionuclides distinguishes PET from other imaging modalities and enables the visualization of metabolic processes in real-time.

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  • 9. 

    The cathode is a filament composed of

    • Gold

    • Silver

    • Tungsten

    • Copper

    Correct Answer
    A. Tungsten
    Explanation
    Tungsten is the correct answer because it is commonly used as the filament in cathodes. Tungsten has a high melting point and excellent electrical conductivity, making it ideal for this purpose. It can withstand the high temperatures required for electron emission in cathode-ray tubes and other similar devices. Gold, silver, and copper are not typically used as filaments in cathodes due to their lower melting points and inferior electrical properties.

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  • 10. 

    The table may also tilt in the opposite direction, allowing the head end to be lowered at least 15 degrees into the ____________________________ position.

    • Head down

    • Trendelenburg

    • Feet up

    • Prone

    Correct Answer
    A. Trendelenburg
    Explanation
    The trendelenburg position refers to a position in which the head end of the table is lowered while the feet end is raised. This position allows for the head to be tilted at least 15 degrees below the horizontal level. Therefore, the correct answer is trendelenburg.

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  • 11. 

    The x-ray tube is surrounded by a lead-lined _________________

    • Tube housing

    • Tube port

    • Upright cassette holder

    • Control booth

    Correct Answer
    A. Tube housing
    Explanation
    The x-ray tube is surrounded by a lead-lined tube housing to protect the surrounding environment from radiation exposure. The lead lining helps to absorb and block the radiation emitted by the x-ray tube, preventing it from escaping and potentially harming people nearby. The tube housing acts as a protective barrier, ensuring that the radiation remains contained within the x-ray machine and does not pose a risk to patients, healthcare professionals, or anyone else in the vicinity.

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  • 12. 

    A device to hold the film

    • Bucky

    • Cassette

    • Tube housing

    • Collimator

    Correct Answer
    A. Cassette
    Explanation
    The correct answer is "cassette". A cassette is a device used to hold the film in medical imaging. It is a container that securely holds the film and protects it from damage. The cassette is designed to fit into the bucky, which is a tray that holds the cassette in place during the imaging process. The cassette also houses the tube, which is the part of the imaging machine that emits the radiation, and the collimator, which controls the direction and shape of the radiation beam. Overall, the cassette is an essential component in medical imaging as it ensures the proper positioning and protection of the film.

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  • 13. 

    Proper collimation for the film size and target film distance will

    • Increase the kvp

    • Decrease the wavelength

    • Decrease the radiation received by the patient

    • Increase the wavelegh

    Correct Answer
    A. Decrease the radiation received by the patient
    Explanation
    Proper collimation for the film size and target film distance will decrease the radiation received by the patient. Collimation refers to the process of restricting the size of the X-ray beam to only the area of interest. By properly collimating the X-ray beam, unnecessary radiation exposure to the patient can be minimized. This is important for patient safety and reducing the risk of radiation-related complications. Therefore, decreasing the radiation received by the patient is the correct answer in this case.

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  • 14. 

    An older term given x radiation  in honor of its discoverer

    • X ray

    • Gamma ray

    • Roentgen ray

    • Scattered ray

    Correct Answer
    A. Roentgen ray
    Explanation
    The correct answer is "roentgen ray." This term was given to x radiation in honor of its discoverer, Wilhelm Conrad Roentgen. Roentgen ray is an older term used to describe this type of radiation. X ray, gamma ray, and scattered ray are not specifically associated with Roentgen and therefore are not the correct answer.

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  • 15. 

    The source of x-rays is the

    • X-ray tube

    • Radiation field

    • X-ray beam

    • Radiation field

    Correct Answer
    A. X-ray tube
    Explanation
    An x-ray tube is a device that generates x-rays by accelerating electrons towards a metal target. When the electrons hit the target, they produce x-rays through a process called bremsstrahlung radiation. Therefore, the x-ray tube is the source of x-rays in medical imaging.

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  • 16. 

    A PET Scan can distinguish between a benign and malignant disorder (between deal or alive tissue)

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A PET scan, or Positron Emission Tomography scan, is a medical imaging technique that can help distinguish between benign and malignant disorders. This is because PET scans can detect metabolic activity in tissues, allowing doctors to identify areas of abnormal cell growth or activity. By analyzing the patterns of metabolic activity, medical professionals can determine whether the tissue is benign (non-cancerous) or malignant (cancerous). Therefore, it is true that a PET scan can differentiate between a benign and malignant disorder.

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  • 17. 

    Collimation of the primary beam

    • Dictates the contrast of the final radiograph

    • Decreases the exposure time

    • Restricts the shape and size of the beam

    • Makes the primary beam more difficult to connect

    Correct Answer
    A. Restricts the shape and size of the beam
    Explanation
    The collimation of the primary beam refers to the process of restricting the shape and size of the beam. By doing so, it ensures that only the desired area is exposed to radiation, while minimizing unnecessary exposure to surrounding tissues. This not only helps in obtaining a clear and focused radiograph but also reduces the scatter radiation, leading to improved contrast in the final image. Therefore, the statement "restricts the shape and size of the beam" is the correct explanation for the given answer.

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  • 18. 

    You have taken a radiograph of a patient with a large skeletal build . the resulting image does not show the bone trabeculation well and appers to underpenetrated. the adjustment that should be made for the retake is

    • Reduce the ma

    • Reduce the exposure time

    • Increase the kvp

    • Reduce the kvp

    • Check the processing solution temperature

    Correct Answer
    A. Increase the kvp
    Explanation
    The radiograph of a patient with a large skeletal build appears to be underpenetrated, meaning that the X-ray beam did not penetrate the patient's body adequately. To address this issue, the adjustment that should be made is to increase the kvp (kilovoltage peak). Increasing the kvp will increase the energy of the X-ray beam, allowing it to better penetrate the patient's body and produce a clearer image of the bone trabeculation.

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  • 19. 

    Who introduced the hot cathode tube?

    • W.d.coolidge

    • W. roentgen

    • F. mcCormack

    • C.e. kells

    Correct Answer
    A. W.d.coolidge
    Explanation
    W.D. Coolidge is credited with introducing the hot cathode tube.

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  • 20. 

    The portion of the target struck by electrons is called the

    • Principle point

    • End point

    • Photon point

    • Focal spot

    Correct Answer
    A. Focal spot
    Explanation
    The correct answer is "focal spot". In radiology, when electrons strike the target, the area where the electrons are concentrated is called the focal spot. This spot is responsible for generating the X-ray beam that is used in imaging. The size and shape of the focal spot can affect the resolution and clarity of the resulting image. Therefore, it is crucial to have a well-defined and precise focal spot for accurate diagnoses.

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  • 21. 

    Filters are used in the xray beam to

    • Increase density

    • Reduce density

    • Reduce exposure size of the beam

    • Reduce patient radiation dose

    Correct Answer
    A. Reduce patient radiation dose
    Explanation
    Filters are used in the x-ray beam to reduce patient radiation dose. X-ray filters are typically made of materials that absorb low-energy x-rays while allowing higher-energy x-rays to pass through. By selectively absorbing the lower-energy x-rays, filters help to reduce the amount of radiation that reaches the patient, thereby minimizing the potential harmful effects of radiation exposure. This is particularly important in medical imaging, where it is crucial to balance the need for clear images with the need to minimize radiation dose to ensure patient safety.

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  • 22. 

    A moving grid is called a

    • Collimator

    • Cassette

    • Bucky

    • Detent

    Correct Answer
    A. Bucky
    Explanation
    A moving grid is called a Bucky.

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  • 23. 

    An imaginary line in the center of the x-ray beam and perpendicular to the long axis of the x-ray tube is called

    • Tube port

    • Collimator

    • Radiation field

    • Central ray

    Correct Answer
    A. Central ray
    Explanation
    The central ray is an imaginary line in the center of the x-ray beam that is perpendicular to the long axis of the x-ray tube. It represents the central path of the x-ray beam and is used to determine the direction and alignment of the x-ray beam during imaging procedures. It is an important concept in radiography as it helps ensure accurate and consistent positioning of the x-ray beam for optimal image quality and patient safety.

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  • 24. 

    A Bone Density Test looks for

    • Osteoporosis, or risk of osteoporosis

    • Where a broken bone is

    • Abnormal bone growth

    • None of the above

    Correct Answer
    A. Osteoporosis, or risk of osteoporosis
    Explanation
    A Bone Density Test is a medical procedure used to determine the density or strength of a person's bones. It is primarily done to diagnose osteoporosis or assess the risk of developing osteoporosis. Osteoporosis is a condition characterized by weak and brittle bones, making them more prone to fractures. By measuring bone density, the test can identify if a person has osteoporosis or is at risk of developing it. The test does not look for broken bones or abnormal bone growth; its main focus is on assessing bone density and the associated risk of osteoporosis.

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  • 25. 

    When were x rays discovered?

    • 1985

    • 1988

    • 1895

    • 1890

    Correct Answer
    A. 1895
    Explanation
    X-rays were discovered in 1895. Wilhelm Conrad Roentgen, a German physicist, accidentally discovered X-rays while experimenting with cathode rays. He noticed that a fluorescent screen in his lab started to glow even though it was not directly exposed to cathode rays. Further investigation revealed that a new type of ray was being emitted, which he called X-rays. This discovery revolutionized the field of medicine and led to significant advancements in imaging technology.

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  • 26. 

    What is a  breast sterotactic biopsy?

    • A procedure done on a MRI machine to show abnormal growth

    • A procedure that only looks for abnormal growth using US and Mammography Images.

    • It is a special mammography procedure that uses ionizing radiation to help guide the radiologist's instruments to the site of the abnormal growth.

    • Is performed by a X-ray Technologist

    Correct Answer
    A. It is a special mammography procedure that uses ionizing radiation to help guide the radiologist's instruments to the site of the abnormal growth.
    Explanation
    The correct answer is that a breast stereotactic biopsy is a special mammography procedure that uses ionizing radiation to help guide the radiologist's instruments to the site of the abnormal growth. This means that the procedure involves using mammography images and radiation to accurately locate and biopsy abnormal growth in the breast. It is not performed on an MRI machine and does not involve ultrasound or X-ray technologists.

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  • 27. 

    The ______________ exits the tube port.

    • X-ray beam

    • Radiation field

    • Central ray

    • Scatter radiation

    Correct Answer
    A. X-ray beam
    Explanation
    The x-ray beam exits the tube port. This means that after being generated in the x-ray tube, the beam of x-rays passes through the tube port, which is the opening in the x-ray machine where the x-rays are emitted. The x-ray beam then continues on its path to interact with the patient or the imaging receptor.

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  • 28. 

    X-rays are produced when fast moving electrons collide with a metal target. The energy carried in the electrons is converted to x-rays and heat. What percentage of that energy is turned into x-rays?

    • 1%

    • 35%

    • 70%

    • 99%

    Correct Answer
    A. 1%
    Explanation
    When fast moving electrons collide with a metal target, the energy they carry is converted into x-rays and heat. Out of that energy, only 1% is turned into x-rays.

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  • 29. 

    Sometimes called filmless systems

    • Computed radiography

    • CT

    • MRI

    • CAT Scan

    Correct Answer
    A. Computed radiography
    Explanation
    Computed radiography (CR) is a type of medical imaging technique that uses a flexible plate coated with a photostimulable phosphor. When exposed to x-rays, the phosphor stores the energy from the radiation. The plate is then processed using a laser scanner, which releases the stored energy as light. This light is converted into a digital image that can be viewed on a computer screen. CR is often referred to as filmless because it eliminates the need for traditional x-ray film. It is commonly used in conjunction with other imaging modalities like CT, MRI, and CAT scan to provide detailed and accurate diagnostic images.

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  • 30. 

    The access point for the limited operator to set the exposure factors and to initiate the exposure

    • Control booth

    • Control console

    • Control area

    • Transformer housing

    Correct Answer
    A. Control console
    Explanation
    The correct answer is control console. The control console is the access point for the limited operator to set the exposure factors and initiate the exposure. It is the central control panel where the operator can adjust and manipulate various settings and parameters related to the exposure process. The control console allows the operator to have direct control and oversight over the exposure, making it the most appropriate choice among the given options.

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  • 31. 

    You are asked to schedule a patient for a scan that requires contrast. In the history you learn that the patient just received a Kidney Transplant. The next step, is to ask for blood work.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    After learning that the patient just received a kidney transplant, it is important to ask for blood work before scheduling the scan that requires contrast. This is because contrast agents used in scans can potentially cause kidney damage, and in the case of a recent kidney transplant, it is crucial to ensure that the patient's kidney function is stable and can tolerate the contrast. Therefore, asking for blood work is necessary to assess the patient's kidney function and determine if it is safe to proceed with the scan.

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  • 32. 

    A device to hold the IR in the upright position for radiography

    • Upright cassette holder

    • Cassette

    • Image receptor

    • Bucky

    Correct Answer
    A. Upright cassette holder
    Explanation
    An upright cassette holder is a device used in radiography to hold the image receptor (IR) in an upright position. This allows for the capture of X-ray images while the patient is standing or sitting. The cassette, which contains the IR, is placed in the upright cassette holder, ensuring that it remains stable and properly aligned during the imaging process. The Bucky, on the other hand, refers to a device that is used to hold and move the cassette during radiography, but it does not specifically refer to holding the IR in an upright position.

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  • 33. 

       This modality allows for evaluation of abdominal pain or nausea and vomiting. Indicated for bowel obstruction, viscus perforation and foreign body ingestion, it is usually the initial evaluation of abdominal pain or nausea and vomiting: a. Enteroscopy b. Video Esophogram c. Plain abdominal film

    • A

    • B

    • C

    Correct Answer
    A. C
    Explanation
    The correct answer is C. Plain abdominal film. This modality, also known as an abdominal X-ray, is commonly used as the initial evaluation for abdominal pain or symptoms such as nausea and vomiting. It can help identify bowel obstruction, viscus perforation, and foreign body ingestion. Enteroscopy and video esophogram are not typically used for the initial evaluation of these symptoms.

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  • 34. 

    In taking the radiograph you did not center the beam on the film in the patient mouth. the resulting film will show

    • Fogging

    • Overlapping

    • Elongation

    • Collimator cutoof cone cutting

    • Foreshortening

    Correct Answer
    A. Collimator cutoof cone cutting
    Explanation
    If the radiograph was taken without centering the beam on the film in the patient's mouth, it means that the collimator cutoff occurred. This happens when the collimator, which controls the size and shape of the x-ray beam, cuts off a portion of the beam resulting in an incomplete exposure on the film. Therefore, the resulting film will show collimator cutoff cone cutting, which refers to the appearance of a truncated cone shape on the film.

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  • 35. 

    If you do have to obtain blood work, the two values that you are most interested in knowing are...

    • WBC and Hematocrit

    • BUN and Creatinine

    • CO2 and Sodium

    • BUN and CO2

    Correct Answer
    A. BUN and Creatinine
    Explanation
    BUN (blood urea nitrogen) and creatinine are two values that are commonly measured in blood work to assess kidney function. BUN is a waste product that is filtered by the kidneys, and an elevated level may indicate kidney dysfunction. Creatinine is a waste product produced by muscles and is also filtered by the kidneys. An elevated creatinine level can be a sign of impaired kidney function. Therefore, monitoring these two values can provide important information about the health of the kidneys.

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  • 36. 

    Absorption of the x-ray beam is called

    • Scatter Radiation

    • Absorption

    • Attenuation

    • Remnant radiation

    Correct Answer
    A. Attenuation
    Explanation
    Attenuation refers to the process of reducing the intensity of a beam of x-rays as it passes through a material. When an x-ray beam encounters a substance, some of the x-rays are absorbed by the material, while others may be scattered or pass through unaffected. However, in this case, the term "absorption" specifically refers to the phenomenon of the x-ray beam being absorbed by the material it encounters. Therefore, "attenuation" is the correct answer to describe the absorption of the x-ray beam.

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  • 37. 

    The unwanted image exposure caused by scatter radiation is called

    • Scatter radiation fog

    • Latent image

    • Remnant radiation

    • Attenuation

    Correct Answer
    A. Scatter radiation fog
    Explanation
    Scatter radiation fog refers to the unwanted image exposure caused by scatter radiation. Scatter radiation occurs when radiation is deflected or scattered in different directions after interacting with matter, such as the patient's body. This scattered radiation can reach the image receptor and cause fogging, resulting in a decrease in image contrast and clarity. Therefore, the correct answer is scatter radiation fog.

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  • 38. 

    A 40 years old female patient presented with recurrent headaches. MRI showd an extra-axial, dural based and enhancing lesion. The most likely diagnosis is:

    • Meningioma

    • Glioma

    • Schwannoma

    • Pituitary adenoma

    Correct Answer
    A. Meningioma
    Explanation
    Based on the information provided, the most likely diagnosis for the patient's symptoms is a meningioma. Meningiomas are typically extra-axial, meaning they occur outside of the brain tissue itself. They are dural based, meaning they originate from the meninges, the protective covering of the brain. Meningiomas also commonly enhance on MRI scans, which is consistent with the enhancing lesion seen in this patient. Gliomas, schwannomas, and pituitary adenomas are less likely based on the given information.

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  • 39. 

    A Mammography is a

    • CT of the Breast

    • MRI of the Breast

    • X-ray of the Breast

    • Mammo of the Breast

    Correct Answer
    A. X-ray of the Breast
    Explanation
    Mammography is a type of imaging technique that uses X-rays to examine the breasts. It is commonly used for breast cancer screening and can detect early signs of abnormalities such as tumors or cysts. Unlike CT scans or MRIs, which provide more detailed images of the internal structures, mammography focuses specifically on the breast tissue. Therefore, the correct answer is X-ray of the Breast.

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  • 40. 

    The milliampere control dial on the dental x ray mchine

    • Regulates the step up transformer

    • Determines the penetration of the x ray

    • Regulates the guality of the radiation

    • Regulates the quantity of the radiation

    • Regulates scatter radiation

    Correct Answer
    A. Regulates the quantity of the radiation
    Explanation
    The milliampere control dial on the dental x-ray machine regulates the quantity of the radiation. This means that by adjusting the dial, the operator can control the amount of radiation that is emitted during the x-ray procedure. This is important because different patients may require different levels of radiation exposure based on their specific needs. By regulating the quantity of radiation, the operator can ensure that the patient receives the appropriate amount for accurate imaging while minimizing unnecessary exposure.

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  • 41. 

      This imaging modality is often the first preliminary test done for evaluating abdominal pain or nausea and vomiting and is indicated when patient is suspected to have bowel obstruction, viscus perforation, foreign body ingestion, abdominal trauma, suspected obstrion/ileus and abdominal distension a. Liver Hemangioma liver scan b. Cholescintigraphy c. Plain abdominal film d. Both B & C

    • A

    • B

    • C

    • D

    Correct Answer
    A. C
    Explanation
    The correct answer is C, Plain abdominal film. This imaging modality, also known as an X-ray, is often the first preliminary test done for evaluating abdominal pain or nausea and vomiting. It is indicated when a patient is suspected to have bowel obstruction, viscus perforation, foreign body ingestion, abdominal trauma, suspected obstruction/ileus, and abdominal distension.

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  • 42. 

    3)   The following indications are for which of the following modalities: Obstructive jaundice,Neoplastic biliary stricture, spincter of oddi pressure.   a. MRA   b. ERCP   c. EGD  

    • A

    • B

    • C

    Correct Answer
    A. B
    Explanation
    The correct answer is B) ERCP. ERCP (Endoscopic Retrograde Cholangiopancreatography) is a procedure used to diagnose and treat conditions of the bile ducts and pancreas. It is commonly used to investigate and treat obstructive jaundice and neoplastic biliary strictures by visualizing the biliary system and obtaining tissue samples. It can also measure the pressure of the sphincter of Oddi, which is the muscle that controls the flow of bile and pancreatic juices into the small intestine. MRA (Magnetic Resonance Angiography) and EGD (Esophagogastroduodenoscopy) are not indicated for these conditions.

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  • 43. 

    Radiation that is scattered or created as a result of the attenuation of the primary x-ray beam by matter.

    • Scatter radiation fog

    • Radiation field

    • Scatter radiation

    • Latent image

    Correct Answer
    A. Scatter radiation
    Explanation
    Scatter radiation refers to the radiation that is scattered or created when the primary x-ray beam is attenuated by matter. This means that when the primary x-ray beam interacts with an object, some of the radiation is scattered in different directions. Scatter radiation can cause a phenomenon known as scatter radiation fog, which can reduce image quality and clarity. Therefore, the correct answer is scatter radiation.

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  • 44. 

    Absorbed dose is the energy deposited in a small volume of matter (tissue) by the radiation beam passing through the matter divided by the mass of the matter. What unit, in the International System of quantities and units, is Absorbed Dose measured in?

    • The gray

    • The rad

    • The sievert

    • The joule

    Correct Answer
    A. The gray
    Explanation
    Absorbed dose is measured in joules/kilogram, and a quantity of 1 joule/kilogram has the special unit of gray (Gy) in the International System of quantities and units. (In terms of the older system of radiation quantities and units previously used, 1 Gy equals 100 rad, or 1mGy equals 0.1 rad.)

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  • 45. 

    The lead diaphagm determines the size and shape of the

    • Electron cloud

    • Film used

    • Xray beam

    • All of the above

    Correct Answer
    A. Xray beam
    Explanation
    The lead diaphragm determines the size and shape of the x-ray beam. The lead diaphragm is a device that is used to control the size and shape of the x-ray beam by limiting the radiation to a specific area of the patient's body. By adjusting the position and size of the lead diaphragm, the radiographer can ensure that only the desired area is exposed to radiation, reducing unnecessary exposure to other parts of the body. Therefore, the lead diaphragm plays a crucial role in determining the size and shape of the x-ray beam.

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  • 46. 

    1)   This modality is used for bowel cleansing and requires sedation . CAN VISUALIZE ENTIRE LARGE BOWEL AND SEVERAL CM OF TERMINAL ILEUM   a. Colonoscopy   b. Sigmoidoscopy   c. Video capsule endoscopy      

    • A

    • B

    • C

    Correct Answer
    A. A
    Explanation
    Colonoscopy is the correct answer because it is a modality used for bowel cleansing and requires sedation. It allows visualization of the entire large bowel and several centimeters of the terminal ileum. Sigmoidoscopy only visualizes the sigmoid colon and rectum, while video capsule endoscopy involves swallowing a small camera to visualize the small intestine. Therefore, colonoscopy is the most appropriate option for visualizing the entire large bowel and terminal ileum.

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  • 47. 

    4)   This contrast study uses fluoroscopy and is used to detect esophageal rings, webs, strictures, motility problems that endoscopy might miss. Very useful for evaluating nonoropharangeal dysphagia as well as Odynophagia.   a. Barium Swallow/Esophagram   b. CT scan   c. Video Esophagram   d. None of the above

    • A

    • B

    • C

    • D

    Correct Answer
    A. A
    Explanation
    This question is asking for the correct test to detect esophageal rings, webs, strictures, and motility problems that endoscopy might miss. The given answer, A) Barium Swallow/Esophagram, is the correct option because this test uses fluoroscopy to visualize the esophagus and detect any abnormalities. It is particularly useful for evaluating nonoropharyngeal dysphagia (difficulty swallowing) and Odynophagia (painful swallowing). CT scan (B) and Video Esophagram (C) are not specifically used for this purpose, and option D) None of the above is incorrect because there is a specific test available for this condition.

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  • 48. 

    Who is believed to have exposed the prototype of the first dental x ray film?

    • A. cieszynski

    • Otto walkhoff

    • C. edmund kells

    • Wilhelm conrad roentgen

    Correct Answer
    A. Otto walkhoff
    Explanation
    Otto Walkhoff is believed to have exposed the prototype of the first dental x-ray film.

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  • 49. 

    Which of the following features on mammogram would suggest malignancy?

    • Well defined lesion

    • A mass of decreased density

    • Areas of spiculated microcalcifications

    • Smooth borders

    Correct Answer
    A. Areas of spiculated microcalcifications
    Explanation
    Areas of spiculated microcalcifications on a mammogram suggest malignancy because they are a characteristic feature of breast cancer. Spiculated microcalcifications appear as small, irregular, and linear clusters of calcium deposits in the breast tissue. These calcifications can indicate the presence of a tumor or precancerous cells. The spiculated appearance indicates that the tumor or lesion has irregular and jagged borders, which is often associated with aggressive and invasive types of breast cancer. Therefore, the presence of spiculated microcalcifications is concerning for malignancy and warrants further evaluation.

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  • Apr 02, 2024
    Quiz Edited by
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  • Sep 02, 2015
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    Cy_u

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