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• FATHER OF RADIOGRAPHY

  Wilhelm Conrad Roent (November 8, 1895)
• kVp indicator (KilovoltagePeak)

  • Controls or it shows the

  highest point of which x-rays are produced
• kVp indicator for dental radiographs

  60-90 kVp
• controls the length of time

  timer
• mA regulator range for dentak x-ray machines

  8-12 mA or 10-15 mA
• Allows the movement or adjustment of the tubehead

  towards the area to be radiographed, extend the control panel to the tubehead

  EXTENSION ARM
• A tightly sealed, heavy metal housing that contains the x-ray tube that produces dental x-rays

  TUBEHEAD
• Contains the angulations that were used in

  taking a radiograph. It has a 5-degree angulation

  NUMBER SCALE
• The tubehead and the cone is positioned

  parallel to the ground

  ZERO ANGULATION
• The tubehead and PID is pointing downward

  POSITIVE ANGULATION
• The tubehead and PID is pointing upward

  NEGATIVE ANGULATION
• MELTING POINT OF TUNGSTEN

  3410 degrees Celsius
• Helps produce x-ray even with the production of heat

  TUNGSTEN
• Metal that absorbs heat during x-ray production

  COPPER
• The heart of the x-ray generating system

  XRAY TUBE
• a lead-line structure or metal body that

  surrounds your tubehead; protects the x-ray tube

  METAL HOUSING
• absorbs heat produced during x-ray production

  INSULATING OIL/GAS
• Direct x-ray beam to the area to be radiographed

  PID (POSITION INDICATING DEVICE )
• It restricts and controls the size of the x-ray beam

  LEAD COLLIMATOR/ LEAD DIAPHRAGM
• It restricts and controls the size of the x-ray beam

  LEAD COLLIMATOR/ LEAD DIAPHRAGM
• These are layers of aluminum that

  functions to absorb low energy forms of radiation that are produced during x-ray production

  ALUMINUM DISKS
• This is the only part in the x-ray tubehead that does not have lead

  TUBEHEAD SEAL
• allows x-rays that were produced in the x-ray tubehead to exit your machine

  TUBEHEAD SEAL
• Functions to bring the incoming

  voltage of 110 or 220 volts to 60,000-90,000 or 100,000

  volts.

  STEP-UP TRANSFORMER
• Adjusts the incoming voltage of

  110 or 220 volts to just 7-10 volts

  STEP DOWN TRANSFORMER
• Adjusts the voltage incase there are fluctuations of incoming power

  AUTO TRANSFORMER
• prevents x-rays from escaping in all direction

  LEADED GLASS HOUSING/ LEADED-GLASS VACUUM
• Unleaded glass window is made of what metal

  BERRYLIUM
• • The only portion of your leaded glass housing that does not contain lead

  • It allows x-rays produced by the x-ray tube to exit the x-ray tube

  UNLEADED GLASS WINDOW
• At the cathode, tungsten will release electrons needed for x-ray the production

  TRUE
• o Produces the electrons when heated

  o Where energy or electrons are produced.

  TUNGSTEN FILAMENT
• o “focusing cup”

  o Where the tungsten filament is embedded

  o Concave structure that focuses or directs

  electrons produced by the tungsten filament

  towards the anode, specifically the tungsten

  target

  MOLYBDENUM CUP
• ANODE

  >right side

  >positive electrode or positive side of the x-ray tubehead
• direction of the flow of x-ray production

  (negative to positive)
• CATHODE

  >left side

  negative electorde on the x-ray tubehead
• where. tungstem [plate/ target is embedded; absorbs heat

  COPPER STEM
• where the energy of the electrons coming

  from the cathode is converted into x-rays; focal spot/ focal plate

  TUNGSTEN TARGET/ PLATE
• Stationary Anode

  o Focal spot (focal: meaning “steady”)

  o Used in dental x-ray machines
• Rotating Anode

  o Focal track

  o Used in bigger machines (for orthodontic

  treatment, skull x-ray)
• The actual focal spot size is bigger than the effective focal spot size.

  TRUE