Title :
Experimental and simulation results of two-dimensional prototype anti-scatter grids for mammography
Author :
Tang, C. ; Fewell, T. ; Jennings, R. ; Fahrig, R. ; Jaffray, D. ; Yaffe, M.
Abstract :
We report experimental and simulation results for two prototype 2D, air-core anti-scatter grids. The fabrication method uses X-ray lithography and electroplating, which allows the fabrication of high aspect ratio metal parts. The grids are made of Ni with 20 μm thick walls (lamella) and 300 μm period. This geometry provides an 87.1% transmission of primary radiation. Grids of a desired grid ratio are obtained by stacking an appropriate number of layers, each approximately 250-350 μm thick
Keywords :
Compton effect; LIGA; Monte Carlo methods; X-ray scattering; biomedical equipment; mammography; micromechanical devices; photon transport theory; radiation protection; 250 to 250 micron; 2D air-core antiscatter grids; Compton scattering; LIGA; Monte Carlo simulation; Ni; X-ray lithography; deterministic model; electroplating; high aspect ratio metal parts; increased primary transmission; large grids; lucite; mammography; photon statistics; scatter-to-primary ratio; stacked layers; Assembly; Breast; Electromagnetic scattering; Geometry; Mammography; Nickel; Particle scattering; Solid modeling; Virtual prototyping; X-ray scattering;
Conference_Titel :
Engineering in Medicine and Biology Society, 2000. Proceedings of the 22nd Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6465-1
DOI :
10.1109/IEMBS.2000.898018
