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xray sience

xray beam

QuestionAnswer
All matter is composed Atoms that contain protons, neutrons and electrons
Has a positive charge Proton
Has a neutral charge Neutron
Has a negative charge Electrons
Electrons Orbit the nucleus in shells or energy levels shells contain a specific number of electrons
Protons Positively charged reside in the nucleus
Neutrons No charge reside in the nucleus
removal of orbital electron from an atom ionization
xray strength depends on its wavelength and frequency
capable of producing biologic effects Xrays
Xrays are a form of electromagnetic energy
Xrays are capable of producing Biologic effects
Electromatic energy Light xrays radio waves microwaves
From radiological standpoint the K-SHELL is most important
Electrons are held in place by Binding energy
wavelength frequency The number of times per second that a crest passes a given point
Xrays with greater energy have shorter wavelengths, higher frequencies , more penetrating
characteristics of xrays Highly penetrating invisible cause crystals to fluoresce travel in straight lines at speed light
Source of Xrays is Xray tube
xray tube is surrounded by lead lined tube housing
Xrays exit the housing through tube port
radiation that leaves the tube is called Primary radiation
an imaginary line in center of xray beam perpendicular to long axis of xray time central ray
Xrays from tube are directed through patient to the Image receptor (IR)
Term that applies to quantity of electrons flowing Through a circuit Current
200 ma x 0.05 sec = 10 mas
8mas
Density x-ray image primary control by MAs
X-ray filtration Reduces patient dose
Bremstrahlung radiation Occurs when electron from cathode paßses close to nucleus of anode causes sudden slowing or breaking
2 types filtration Inherent- mirror, oil, glass Added- alum Total of 2.5 mm
Compensating filters Filter placed between x-ray tube and patient
During x-ray production electronic energy converted to 99% Heat and 1% x-ray energy
Smaller x-ray tube filament results in Greater image detail
Created by: Colacase
 

 



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