kats

Card Set Information

Author:
MYKE
ID:
237025
Filename:
kats
Updated:
2013-09-25 15:52:29
Tags:
Science Tech
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Description:
Kats Class On 9/25/13
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  1. Console Must allow/provide what 5 Things
    • On/off
    • Select x-ray exposure factors
    • Initiate and terminate exposure
    • Provide audible
    • visual indication of x-ray exposure
  2. 5 generic controls
    • Main power
    • Kilovolt peak (kVp)
    • Milliamperage
    • Timer
    • Rotor-exposure switch mAs
  3. Determined by voltage; expressed in   exposure quality factor
    kVp
  4. As kVp increases, so does
    penetration
  5. “ kVp determines
    the quality of the x-ray beam
  6. Millamperage
    Amount of current supplied to the x-ray tube
  7. Time is..
    is the Duration of exposure
  8. mA settings (stations)
    • Range from 50 to 1000 mA
    •  Selectable in increments of 100*
    • *have seen some with a 25 and 50 mAstation
  9. 3 lesson” in Radiation Protection for our patients
    Optimal kVp Highest mA station Lower time Least dose to patient
  10. construction of the x-ray tube - External
    • 1-Protective housing
    • A)Support
    • B) Lead lined
    • C) Electrical insulator
    • D) Thermal cushion
    • 2-Oil bath / cooling fans
    • A) Dissipate heat
    • 3- Electrical cables
    • A) Large current & voltage
    • 4- Collimator assembly (not really part of tube)
  11. Describe the construction of the x-ray tube –Internal
    • Glass envelope
    • Port / target window
    • Cathode
    • Filament
    • Focusing cup
    • Anode
  12. THERMONIC EMMISSION
    • CAUSES HEAT-      RELEASE OF ELECTRONS
    • WHAT HPPENS WHEN

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