{TAIL ~ This invention} relates to X ray collimator grids, and, more particularly, to {HEAD ~ a method} of fabricating a collimator grid containing a silicon crystal mono crystalline substrate and to a mono crystalline silicon X ray collimator grid formed thereby 
{ TAIL ~ This invention } relates to X ray collimator grids , and , more particularly , to { HEAD ~ a method } of fabricating a collimator grid containing a silicon crystal mono crystalline substrate and to a mono crystalline silicon X ray collimator grid formed thereby
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