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

Creatv MicroTech建议开发用于乳腺X射线摄影的高精度X射线防散射滤线栅，这将提高图像对比度和信噪比。这是通过减少由成像对象产生的散射X射线来实现的。所提出的防散射格栅的一些潜在特性是：（i）格栅图案是二维的，（ii）空芯开口聚焦到点X射线源，（iii）格栅图案可以精确地制造，（iv）格栅图案是精确可再现的，以及（V）格栅高度不受制造的限制。在第一阶段，我们证明了精确制造的非聚焦网格高达2.2毫米的网格比高度。一个1.78毫米高的二维镍网格提供实验测量的主要传输85%和更好地减少散射辐射比1.5毫米高的商业CGR乳腺摄影网格。对于第II阶段，我们建议开发制造技术，以证明标准乳腺X线摄影防散射滤线栅尺寸的二维聚焦防散射滤线栅。拟议的商业应用：到2000年，乳房X线摄影设备的全球市场估计将超过1000台。由于抗散射滤线栅的基准价格为每单位12K美元，到2000年，仅用于乳房X线照相术的抗散射滤线栅的市场就可以高达每年1200万美元。据估计，用于所有其他医疗射线照相和荧光透视的防散射滤线栅的市场要大得多。此外，防散射滤线栅还适用于无损检测、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.