Limited scope radiography image acquisition and evaluation Exam Latest

Limited scope radiography image acquisition and evaluation Exam Latest amount of blackness on a given area of radiograph ; controlled by the number of exit ( remmant) rays striking the image receptor - density (brightness) controls the number of electrons passing from a cathode to anode in the x-ray beam - factors controlling and influencing density (brightness) - mAs controls the quanity of x-rays produced at the anode - factors controlling and influencing density (brightness) - mAs controls the amount of radiaiton exiting the x-ray tube - this is directly proportional relationship as the mAs is increased , density increases in the same amount - factors controlling and influencing density (brightness) - mAs as mAs is decreased , density decreases in the same matter - factors controlling and influencing density (brightness) - mAs directly controls the number of x-rays photons that emerge from the patient as exit rays directly controls the number of x-rays that eventually strike the image receptor - factors controlling and influencing density (brightness) any combination of mA value and time that produce the same mAs value result in the same density on the radiograph sometimes expressed by the equation :mAs=mAs - factors controlling and influencing density (brightness)- governed by the reciprocity law Directly controls the energy or quality of the x-rays produced - factors controlling and influencing density (brightness)- KVP as the potential differences increases , the electrons from the cathode strike the anode in greater numbers and with greater energy this results in an increased level of production of short-wave length , high- energy radiation - factors controlling and influencing density (brightness)- KVP directly effects density, although not in a directly proportional relationship - factors controlling and influencing density (brightness)- Kvp