TWO-DIMENSIONAL, FOCUSED, X-RAY ANTI SCATTER GRIDS

Creatv MicroTech建议开发用于乳房x线摄影的高精度x射线防散射网格，这将提高图像对比度和信噪比。这是通过减少成像物体产生的散射x射线来实现的。所提出的反散射网格的一些潜在特性是：(i)网格图案是二维的，（ii）空气芯开口聚焦到一个点x射线源，（iii）网格图案可以精确地制作，（iv）网格图案可以精确地再现，(v)网格高度不受制造的限制。在第一阶段，我们演示了精确制造无聚焦网格，网格比高度达到2.2 mm。与1.5 mm高的商用CGR乳房x线摄影栅格相比，1.78 mm高的二维镍栅格提供了实验测量的85%的初级透射率和更好的散射辐射减少。对于第二阶段，我们建议开发制造技术来演示标准乳房x线摄影的二维，聚焦反散射网格，反散射网格尺寸。拟议的商业应用：到2000年，全球乳房x线摄影设备市场估计将超过1000台。每台防散射网格的基准价格为1.2万美元，到2000年，仅用于乳房x光检查的防散射网格市场每年就可以达到1200万美元。据估计，用于所有其他医疗x线摄影和透视的防散射网格的市场要大得多。此外，防散射网格还适用于无损检测、实验室研究等。

Creatv MicroTech proposes to develop high precision, x-ray anti-scatter grids for mammography, which will improve image contrast and signal-to- noise ratio. This is achieved by reducing the scattered x-rays produced by the imaging object. Some of the potential properties of the proposed anti- scatter grid are: (i) the grid pattern is two-dimensional, (ii) the air-core opening is focused to a point x-ray source, (iii) the grid patterns can be made precisely, (iv) the grid patterns are reproducible with precision, and (v) the grid height is unrestricted by fabrication. In Phase I, we demonstrated precise fabrication of unfocused grids up to a grid ratio height of 2.2 mm. A 1.78 mm high two-dimensional nickel grid provided experimentally measured primary transmission of 85% and better reduction of scattered radiation than a 1.5 mm high commercial CGR mammographic grid. For Phase II, we propose to develop the fabrication technology to demonstrate two-dimensional, focused anti-scatter grid of the standard mammographic, anti-scatter grid size. PROPOSED COMMERCIAL APPLICATION: The worldwide market for mammographic units is estimated to be over 1000 by the year 2000. With a benchmark price for an anti-scatter grid of $12K per unit, the market for anti-scatter grids for mammography alone can be as large as $12 million per year by the year 2000. The market for anti-scatter grids for all other medical radiographies and fluoroscopies is estimated to be much larger. In addition, anti-scatter grids are also applicable to non-destructive testing, laboratory research, etc.