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Contrast adjustment of radiological images using liquid crystal devices.
Gleeson, H. F.; Winlow, R.; Whitehouse, R
Molecular Crystals and Liquid Crystals. 2004;413:2689-2695.
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Abstract
When trying to view a radiol. image (x-ray) with a full range of optical densities, it can be impossible to see detail in very dark parts of the image if there are also very bright parts. A technique which uses a liq. crystal device to improve the visibility of such images by selective redn. of the optical d. range in parts of the image is described. A nematic liq. crystal device (such as that typically used in an overhead projector display) is employed within an app. that incorporates feedback to selectively mask bright parts of a radiol. image. Obvious visual improvements were obtained using the technique, presenting the potential of a device system for improved anal. of certain radiol. images. [on SciFinder (R)]
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