flouro

    Cards (87)

    • What is one of the main components of an image intensifier?
      Image intensifier
    • What is the difference between mobile and portable equipment?
      Mobile is too heavy to carry; portable can be carried
    • What are the types of fluoroscopy equipment?
      • Ceiling-suspended image intensifier and under-table tube
      • Ceiling-suspended tube and under-table image intensifier
      • C-arm assembly (ceiling-suspended or floor-mounted)
      • Mobile C-arm system (for operating theatre)
    • What is the principle behind fluoroscopic imaging?
      Phosphors absorb X-rays and emit light photons
    • What is the imaging chain in a fluoroscopic unit?
      X-ray source is below the patient
    • What can modern digital fluoroscopic units replace?
      Image intensifier with flat panel detector
    • What are the components of the fluoroscopy system?
      • X-ray tube and generator
      • X-ray table
      • Grids, filters, and collimators
      • Image intensifier or flat panel detector
      • Video camera
      • Viewing monitor
    • What does the generator do in a fluoroscopic system?
      Powers the X-ray tube to produce X-rays
    • What do collimators do in fluoroscopy?
      Control the size and shape of the X-ray beam
    • What is the role of grids and filters in fluoroscopy?
      Remove low energy photons and improve beam quality
    • What is the purpose of the video camera in a fluoroscopy system?
      Enable image processing and viewing
    • What is brightness gain in fluoroscopy?
      Product of flux gain and minification gain
    • What does automatic brightness control do?
      Increases radiation dose if light output falls
    • What happens in magnification mode of fluoroscopy?
      Increases voltage to focusing lenses, altering focal point
    • What is pulsed fluoroscopy used for?
      To reduce fluoroscopy times and lower dose
    • What are the design considerations for mobile X-ray units?
      • Mounted on wheels for mobility
      • Brake system for safety
      • Motorized for movement assistance
      • Powered by rechargeable batteries
      • Weight and size for hospital lift limits
    • What is the purpose of battery-operated units in mobile X-ray machines?
      Provide flexibility and avoid power surges
    • What are the differences between CR and DR systems?
      CR:
      • No charging required
      • Light and cheap
      • Requires reading in CR reader

      DR:
      • Requires charging
      • Instant image
      • Heavy and expensive
    • What are the maintenance and safety considerations for mobile units?
      • Service as per manufacturer’s schedule
      • Park tube head to minimize damage
      • Charge in well-vented areas
      • Keep clean to reduce infection risk
      • Apply brakes in lifts
    • What is the main purpose of mobile X-ray units?
      For patients unable to travel to imaging
    • In what situations are mobile X-ray units used?
      For resus, trauma, and intensive care patients
    • How does the design of mobile X-ray units enhance their functionality?
      Mobility and safety features improve patient access
    • What is the role of the X-ray tube in fluoroscopic systems?
      Similar design to general radiographic tubes
    • What is the significance of extra heat capacity in X-ray tubes?
      Needed for rapid succession imaging in angiography
    • What type of batteries are used in battery-operated mobile units?
      Lead acid and Ni-Cd batteries
    • What is the function of tube movements in mobile X-ray units?
      Allows adaptation around patient requirements
    • Why should mobile units be kept clean?
      To reduce the risk of cross infection
    • What should be done during movement of mobile units?
      Park the tube head as per instructions
    • What is the importance of brakes in mobile X-ray units?
      Ensure safety when stationary during imaging
    • What is the role of automatic exposure rate control?
      Maintains received dose rate per frame
    • What is the purpose of managing dose in fluoroscopy?
      To minimize radiation exposure to patients and staff
    • How does the transition to flat panel detectors affect fluoroscopy?
      Improves image quality and reduces size
    • What is the main goal of the learning outcomes for mobile radiography?
      Discuss principles, components, and operations of mobiles
    • What is the significance of the mobile and portable X-ray equipment distinction?
      Mobile is for hospital use; portable is for home visits
    • Why are mobile X-ray units important for certain patients?
      They provide imaging for vulnerable patients
    • How do design considerations impact the functionality of mobile X-ray units?
      Design affects mobility, safety, and patient access
    • What is the role of the X-ray table in fluoroscopy?
      Can be moved to different orientations
    • What is the importance of the viewing monitor in fluoroscopy?
      Requires high quality display to interpret detail
    • What is the significance of artefacts like vignetting and pincushioning?
      They affect the quality of fluoroscopic images
    • What is the role of the input phosphor in image intensification?
      Converts X-rays to light
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