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Evaluation of optical unsharp masking and contrast enhancement of low-scatter chest radiographs.
AJR Am J Roentgenol
August 1987
Conventional chest radiography poses a challenging technical problem because of its requirement for simultaneous high-contrast display and wide-latitude recording across the entire image. We developed and evaluated a method of producing chest radiographs by using a tantalum air-interspace grid for highly efficient scatter rejection, wide-latitude X-ray film for recording the low-scatter image, and a LogEtronics printer for optical unsharp masking and contrast enhancement of the recorded image (TWL technique). TWL images can be readily obtained and have excellent contrast and detail across the entire image.
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