Final exam part 1.2.txt

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Author:
GeorgieKay
ID:
123260
Filename:
Final exam part 1.2.txt
Updated:
2011-12-12 22:02:54
Tags:
radiology imaging
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chlamydia hashaam
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    • author "John Capiral"
    • fileName "Final exam part 1.2"
    • tags "Capiral"
    • description "Oooooh yeahhh"
    • What is the purpose of the focusing ucp?
    • A. To narrow the electron stream
    • B. To increase flow of electrons
    • C. To deccrease scatter
    • D. None of the above
    • A. To narrow the electron stream
  1. What is a biased focusing cup?
    A. Makes the electron stream even smaller and increases image detail
    B. Makes the electron stream much bigger and reduces detail but get rids of scatter
    C. Makes the electron stream somewhat bigger an better detail
    A. Makes the electron stream even smaller and increases image detail
    (this multiple choice question has been scrambled)
  2. What is the space charge effect?
    A. When too much electrons are on the focusing cup and they wont fly across the tube.
    B. When heres not enough electrons in the focus cup and Ma has to be increased
    C. When the electrons become smaller and are able to fly across the tube swiftly and efficiently without losing energy
    D. None of the above
    A. When too much electrons are on the focusing cup and they wont fly across the tube
    (this multiple choice question has been scrambled)
  3. How many more photons are on the cathode end of the tube?
    A. 25% more
    B. 30% more
    C. 20% more
    D. 15%more
    A. 25% more
    (this multiple choice question has been scrambled)
  4. What is the function of the stator?
    A. It turns the rotor
    B. Sends electrons to the filametn cup
    C. Its the motor that turns the anode disc
    D. None of the above
    A. It turns the rotor
    (this multiple choice question has been scrambled)
  5. What is the function of the rotor?
    A. Disappate heat
    B. Get rid of off-focus radiation
    C. None of the above
    D. Turns the anode disc
    D. Turns the anode disc
  6. What is the function of the glass envelope?
    A. Makes a vacuum
    B. Store the x-ray tube
    C. Makes it so electrons collide with atoms inside
    D. None of the above
    A. Makes a vacuum
    (this multiple choice question has been scrambled)
  7. What does the protective housing help prevent?
    A. Off focus
    B. Leakage
    C. Scatter
    D. None of the above
    B. Leakage
    (this multiple choice question has been scrambled)
  8. What is the unit of exposure?
    A. Rad
    B. Roentgen
    C. Rem
    C. Mrem
    B. Roentgen
    (this multiple choice question has been scrambled)
  9. What is the unt iof absorbed dose
    A. Rem
    B. Rad
    C. Roentgen
    D. None of hte above
    B. Rad
    (this multiple choice question has been scrambled)
  10. What is the unnit of equivalent dose
    A. Gray
    B. Roentgen
    C. Rad
    D. Rem
    D. Rem
    (this multiple choice question has been scrambled)

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