RAD 330 Lecture Notes - Lecture 1: Radiography, Ibm 7090, Lead
23 May 2022
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Document Summary
Purpose : remove scatter before it reaches the image receptor. Improves contrast of the radiographic image visibility of detail: invented by gustav bucky in 1913. Grids are not a protective radiation device absorbs scatter radiation ( removes scatter before reaches irradiated tissue ( less tissue = less scatter) collimation: Reduces the volume of results in more scatter! Removes scatter before it reaches the ir. , helping to improve recorded contrast of the rad image. Absorbs primary (cid:8869)loss of quanity f in kvp (more scatter) remnant radiation. W/ grid scattered photons removed results densities on the image in less grays. Grid characteristics & function two types of grids. The relationship between the height and the width of the interspaces between the lead (pb) foil strips. The interspaces are 8 times taller than they are wide. As grid ratio increases, the ability of the grid to. Higher grid ratio results in improved subject contrast. no.
