Xray Emission Spectrum Flashcards
(27 cards)
Only specific values
Discrete spectrum
Range of values of any quantity
Spectrum
All posible values
Continuous spectrum
Range of energies and form a continuous emission spectrum
Bremsstralung xrays
Precisely fixed energy amd form the discrete emossion spectrum
Charateristic xrays
Adding up the total number of xrays over the entire spectrum
Integration
Charaterized by quantity and quality
Xray beam
Intensity of the xray beam
Xray quantity
Intensity is measured in
Roentgens
Measure of number of ion pairs produced in air
Roentgen
Factors affecting xray quantity
mA or mAs
kVp
A ____ increase in kVp is equivalent to doubling the mAs
15%
Reduce the number of low energy xrays
Filtration
Produce the lowest voltage ripple
High frequency generator
Regular variation in a direct current voltage
Voltage ripple
The ability of xrays to penetrate deeper in tissue
Penetrabity
Penetrability of the xtay beam
Xray quality
Process of removing low energy xrays
Filtration
Ideally filtered xray beam is
Monoenergenic
For filter , \_\_ is chosen because of its Efficient removing through photoelectric effect Readily available Inexpesive Easily shaped
Aluminum
Refers to the glass/ metal enclosure of an xray tube
Inherent filtration
Inherent filtration is approximately
0.5 mm Al
With aging tube , the filtration
Increases
Refers to a thin sheet of aluminum positioned between the protective housing and xray beam collimator
Added filtration