A Study of the Anode Heel Effect at Beam Energies of 75kV and 140kV

The \textit{anode heel effect} refers to a decrease of the intensity of an x-ray beam from the cathode side to the anode side. This variation is measured along the longitudinal axis of the x-ray tube and is a result of the geometry of the anode head. This experiment, conducted at the Tri-State Regional Cancer Center in Ashland, KY, used a quality assurance, detector array called an ArcCHECK. The array is a cylindrical imaging phantom containing 1386 n-type silicon diodes arranged in a helix over the apparatus. Using ArcCHECK, beam profiles and dose distribution plots for x-ray beam energies of 75kV and 140kV were produced. This talk will focus on the plots and the noticeable effects at both 75kV and 140kV.