Factors affecting X-ray Image Quality
Abstract
X-Rays have been used for non invasive high resolution imaging of thick biological specimens since their discovery .They are widely used for structural imaging of bone ,metal implants and cavities in soft tissues .In Xray analysis we have a spectrum of X rays. The Xray spectrum is defined as energy distribution of radiation produced in a Xrays exposure .It has major impact on image Quality and radiation dose to the patients . there are some factors which effect the spectrum like Generator type,peak tube potential ,tube current ,exposure time ,filterstion ,contrasting methodologies ,S/N ratio,contrast to noise ratio ,accelerating voltage etc.,different factors affect …show more content…
A portion of the electron energy as it strikes the target is converted into Xrays radiation .All Xrays produced exposure of different energy the distribution of these polyenergetic photons make the Xrays spectrum of the exposure .
The maximum X ray energy (kev)of spectrum is the peak electrical voltage applied across the Xray tube (in kvp).Minimum Xray energy is limited by filteration material in Xray beam ,and average energy depends on several factors ,includesxray tube potential and beam filteration .Spectrum composed of photons generated by both Bremsstrauhlung and characteristics electrons interaction.Majority of the Xrays produced by bremsstrauhlung onteraction ,in which the incident electrons bombarding the anode transfer varying amount of energy to the xrays photon being produced.
A limited number of Xray are produced as characteristics because it involves the transition of electron of electron between varies orbital shells of target atoms ,it appears as discrete lines at certain fixed energies in spectrum .the fixed energy level represents the difference between the binding energy of electron orbital shells of target atoms
Abstract
X-Rays have been used for non invasive high resolution imaging of thick biological specimens since their discovery .They are widely used for structural imaging of bone ,metal implants and cavities in soft tissues .In Xray analysis we have a spectrum of X rays. The Xray spectrum is defined as energy distribution of radiation produced in a Xrays exposure .It has major impact on image Quality and radiation dose to the patients . there are some factors which effect the spectrum like Generator type,peak tube potential ,tube current ,exposure time ,filterstion ,contrasting methodologies ,S/N ratio,contrast to noise ratio ,accelerating voltage etc.,different factors affect …show more content…
A portion of the electron energy as it strikes the target is converted into Xrays radiation .All Xrays produced exposure of different energy the distribution of these polyenergetic photons make the Xrays spectrum of the exposure .
The maximum X ray energy (kev)of spectrum is the peak electrical voltage applied across the Xray tube (in kvp).Minimum Xray energy is limited by filteration material in Xray beam ,and average energy depends on several factors ,includesxray tube potential and beam filteration .Spectrum composed of photons generated by both Bremsstrauhlung and characteristics electrons interaction.Majority of the Xrays produced by bremsstrauhlung onteraction ,in which the incident electrons bombarding the anode transfer varying amount of energy to the xrays photon being produced.
A limited number of Xray are produced as characteristics because it involves the transition of electron of electron between varies orbital shells of target atoms ,it appears as discrete lines at certain fixed energies in spectrum .the fixed energy level represents the difference between the binding energy of electron orbital shells of target atoms