MICROCHANNEL PLATE ANTISCATTER GRID FOR RADIOGRAPHY

用于放射线照相的微通道板抗散射网格

• 批准号: 2637044
• 负责人: MAHADEVAN KRISHNAN
• 金额: $ 10万
• 依托单位: ALAMEDA APPLIED SCIENCES CORPORATION
• 依托单位国家: 美国
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-30 至 1998-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2637044
• 关键词: biomedical equipment development; digital imaging; glass; image enhancement; radiography

Alameda Applied Sciences Corporation in conjunction with UC Davis Medical Center, Lawrence Livermore National Laboratory and Schott Fiber Optics, proposes to develop large format, focused, two-dimensional, microchannel plate anti-scatter grids as commercial replacements for today's linear anti-scatter grids used in radiography. In Phase I, the applicants will develop 18x24cm grids focused at 60cm, compatible with mammography. Monte Carlo simulations will aid the designs. Bench tests with x-ray sources, phantoms and screen-film detectors will validate the prototype grids. The 18x24cm grids will be constructed as tiled arrays of smaller microchannel plates, using a press-fusing technique recently developed by Schott. The large format tiled array will be focused either: by arranging multiple flat plates on a gentle curve to conform to the spherical surface; or by thermally slumping the large array to the desired surface. In Phase II, 20"x14" grids focused at 1m and 14 "x17" grids focused at 1.83m will be developed, for bench and clinical tests in general and chest radiography. Commercialization of the superior anti-scatter grids will occur in Phase III. These new anti-scatter grids could markedly improve screen-film radiography and will also play a role in digital radiography.

阿拉米达应用科学公司与加州大学戴维斯分校合作 劳伦斯·利弗莫尔国家实验室医学中心和肖特纤维 光学，建议发展大幅面、聚焦、二维、 作为商业替代品的微通道板防散布格栅 当今射线照相中使用的线性防散射栅格。在第一阶段， 申请者将开发18x24厘米的网格，聚焦在60厘米，与 乳房X光检查。蒙特卡洛模拟将有助于设计。长凳 用x射线源、模体和屏幕胶片探测器进行测试将 验证原型轴网。将建造18x24厘米的网格 作为较小微通道板的平铺阵列，使用压熔 肖特最近开发的技术。大幅面平铺阵列 也会聚焦：通过将多个平板轻轻地排列在一起 曲线以符合球面；或通过热塌陷 将大阵列连接到所需表面。在第二阶段，集中了20个“x14”网格 将开发1米和14“x17”网格，重点放在1.83米处，用于工作台 以及全身和胸部X线片的临床检查。商业化 优秀的防散射网格将在第三阶段出现。这些新的 抗散射栅格可显著提高屏幕胶片成像质量 也将在数字射线照相技术中发挥作用。