[e-mail]

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Dental Radiographic Facility ??????????
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07-31211012755
yukkwa_at_kmu.edu.tw
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Components of X-ray machine
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(tube head)
Correct focus
Parallel X-ray beam
Short cone
Long cone
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??-2mm ??-1cm
Absorb of unwanted x-ray from all other directions
60 - 90 kVp
Molydenum cup (focal device)
Tungsten filament
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Copper
Target
3 - 5V
(Tungsten)
Anode ()
Cathode (-)
Window (lead glass)
Tungsten (?) ??3410?
Higher kVp faster electron produced
X-ray release in all directions
Higher (5-20) mA more electron produced
Effective X-ray beam (1)
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Anode ()
Cathode (-)
Target
Actual focal spot
Focal spot
10mm
X-ray beam
Apparent focal spot
X-ray beam
4mm
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X-ray Machine gt 90kVp
Rotatory Target
Cathode 1
Anode ()
X-ray beam
Cathode (-)
X-ray beam
Stronger X-ray beam
Cathode 2
X-ray beam
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X-ray tube
Extraoral film Conventional
Intraoral film
Arm
X-ray tube
Tube head
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Speed of Film
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Extraoral Film
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Intensifying Screen
Photoelastic effect
Absorb low energy photons
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Cross over
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Absorb high energy photons
CaWO4 System (Blue light)
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R
L
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Control panel
X-ray source
F-H plane
Anterior Bite block
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Cephalometric radiography
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Image detectors (Digital)
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(hyposulfite)
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