1. tube head
1.1. tube
1.1.1. cathode(-ve)(source of electrons)
1.1.1.1. filament
1.1.1.1.1. tungusten
1.1.1.2. focusingcup
1.1.1.2.1. made of molybedenum
1.1.2. anode(+ve)
1.1.2.1. target
1.1.2.1.1. made of tungsten
1.1.2.2. copper blok
1.1.2.2.1. thermal conductor that allows efficientdissipation of heat generated during x-ray production
1.1.3. insulating oil
1.1.3.1. remove the heat & prevent electric shock
1.1.4. metal housing
1.1.4.1. 1- surrounding lead
1.1.4.1.1. absorbs unwanted x-rays
1.1.4.2. 2- surrounding glass tube
1.1.4.2.1. supports & protect the tube&oil
1.1.4.3. 3- small aperture
1.1.4.3.1. opposite to the target from which the useful beam emerges
1.2. accessories
1.2.1. filter
1.2.1.1. pure aluminium
1.2.1.1.1. placed at the aperature of the x-ray tube
1.2.1.1.2. types
1.2.2. collimator
1.2.2.1. lead disc or cylinder with centeral aperture
1.2.2.1.1. shapes & limits the beam size
1.2.3. cone(PID)
1.2.3.1. indicating the direction of beam & sitting the distance from focal spot on target to the skin
1.2.3.1.1. material
1.2.3.1.2. shape
1.2.3.1.3. length
1.3. power supply
1.3.1. current to heat the filament & potential differance to accelerate the electrons from cathode to anode
1.3.1.1. step-down transformer
1.3.1.1.1. from 220 to (8-12) V
1.3.1.2. step-up transformer
1.3.1.2.1. from 220 V to (60-90)KV