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MED 107- MEDICAL PHYSICS II > 22. X-RAY APPLICATIONS: FLUOROSCOPY > Flashcards

22. X-RAY APPLICATIONS: FLUOROSCOPY Flashcards

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1
Q
  1. What is Fluoroscopy?
A
  • it is a form of real time X-ray imaging
  • it is a dynamic technique
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2
Q
  1. What is a Radiograph?
A
  • it a presentation of the anatomy at a particular
    moment in time
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3
Q
  1. What is Fluoroscopy used for?
A
  • it is used for imaging motions within the body
  • it is used for many interval procedures
  • these procedures are done under X-Ray Guidance
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4
Q
  1. What does Fluoroscopy make use of?
A
  • it uses fluorescent materials
  • these convert the X-Rays into visible light
  • they do this onto a Phosphor screen
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5
Q
  1. What kind of quality are the individual Fluoroscopy images?
A
  • they are of a much lower quality
  • this can be achieved with single image receptors in
    terms of:
    • spatial resolution
    • noise
    • contrast
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6
Q
  1. Label this diagram.
A
  1. X-Ray Source
  2. X-rays
  3. Bed
  4. Person
  5. Fluorescent Screen
  6. Digital Detector
  7. TV Camera
  8. TV Monitor
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7
Q
  1. What happens at the X-Ray Source?
A
  • the X-Ray Beam is produced
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8
Q
  1. Which 2 kinds of detectors can we have in Fluoroscopy?
A

INDIRECT DIGITAL DETECTOR:
- such as the image intensifier

DIRECT DIGITAL DETECTOR:
- such as the Flat Panel

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9
Q
  1. What is the function of the TV Monitor?
A
  • this is where the final images are displayed in real time
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10
Q
  1. Why is Fluoroscopy important?
A
  • it has replaced many surgical procedures
  • the X-Ray guidance of this technique allows us to insert
    medical equipment into the human body
  • this takes away the need to do an open surgery
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11
Q
  1. What does these images represent?
A
  • a mobile C-arm
  • this machine can be rotated and positioned to look at
    various aspects of the patient
  • this machine can be transferred to various rooms
    within the hospital
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12
Q
  1. What is a mobile C-arm?
A
  • it is a medical imaging device
  • it is based on X-Ray technology
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13
Q
  1. In which settings is the mobile C-arm device used?
A
  • it is used flexibly in various ORs within a clinic
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14
Q
  1. What gives the C-arm its name?
A
  • the C-shaped arm
  • this arm connects the X-Ray source to the X-Ray
    detector
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15
Q
  1. What is this image showing?
A
  • the mobile O-arm
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16
Q
  1. What is the mobile O-arm?
A
  • it is a medical device
  • it is based on X-Ray technology
  • it is a multi-dimensional surgical imaging platform
17
Q
  1. In which settings do we use the O-arm?
A
  • we use it flexibly in various ORs within a clinic
18
Q
  1. What aspect of the O-arm is responsible for its name?
A
  • the O-shaped arm
  • this is use to connect the X-Ray source to the X-Ray
    detector
19
Q
  1. In parts of the body do we image using the O-arm?
A
  • spine
  • orthopaedic
  • trauma-related surgeries
20
Q
  1. Between the C-arm and the O-arm, which produces higher quality images?
A
  • the O-arm
21
Q
  1. What kind of images can we obtain from the O-arm?
A
  • both 2D and 3D images
22
Q
  1. What kind of images can we obtain from the C-arm?
A
  • only 2D images
23
Q
  1. What do we use Angiography for?
A
  • it is used to visualise the inside of blood vessels
  • it is used to visualise the inside of the organs of the
    body
24
Q
  1. What is Tomography?
A
  • this is a kind of imaging
  • it images by sections (sectioning) that uses any kind of
    penetrating wave
  • it is a type of real time imaging
25
Q
  1. Which 3 parts of the body does Angiography take a particular interest in?
A
  • arteries
  • veins
  • heart chambers
26
Q
  1. How does Angiography work?
A
  • it is done by injecting a radio-opaque contrast agent
    into the blood vessel
  • the imaging is done using X-Ray based techniques
    (such as Fluoroscopy)

NB:
- we can see if there are any blockages that restrict the
flow of blood

MED 107- MEDICAL PHYSICS II (108 decks)

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