I
Atom that has lost or gained an electron
ion
Scatter and leakage
secondary radiation
Where are the basic controls of autotransformer located
control circuit
Aluminum sheet that can be added to the outside of the x-ray tube
added filtration
what charge does the anode have
These devices absorb scatter radiation
grids
All early x-ray tubes
crooke's tubes
upright bucky is mounted where
the wall
Collimation should be____ and parallel to____
symmetrical and IR margins
ADC converts____ to _____
analog signal to digital signal
When are grids utilized
part thickness greater than 10 cm
This effect explains why the intensity of the x-ray beam is greater on the cathode side
anode heel effect
source of electrons on x-ray tube
cathode
Process of changing the current to the x-ray tube from alternating to direct
rectification
x-ray focusing cup has what type of charge
negative
Automatically restricts the primary beam to the size of the IR
(PBL) Positive beam limitation
The filament circuit is responsible for delivering this to x-ray tube
electrical current
what materials are used to make the filament
tungsten
Inherent filtration includes
glass envelope, glass tube, insulating oil
what % of energy used to produce x-rays result in heat
98-99%
Line focus principle results from electron beam striking:
angled target
Least accurate timer for exposure less than 1/60 a second
synchronous
This device is connected to autotransformer and measures voltage output
KVP meter
this focal spot gives you better recorded detail
small
When does the AEC terminate the exposure:
when the IR has received the correct amount of exposure