Practical and Compact High Ratio Mammography Grid System

实用且紧凑的高比率乳腺X线摄影网格系统

• 批准号: 6622234
• 负责人: David M. Gauntt
• 金额: $ 18.87万
• 依托单位: X-RAY IMAGING INNOVATIONS
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2005-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6622234
• 关键词: bioimaging /biomedical imaging; biomedical equipment development; clinical research; computer data analysis; computer program /software; computer system design /evaluation; human subject; image enhancement; mammography; phantom model

It is well known that scattered X-rays significantly degrade image contrast in mammography. As a result commercially available mammography units all employ low ratio grids to reduce the effects of scatter and image contrast. However, conventional mammography grids are limited in their ability to control scatter, particularly for thick dense breasts, and marked improvement in image contrast is possible with more efficient scatter control. Such improvements have been demonstrated with high ratio, high primary transmission grids. However, these grids have to move through a large distance to suppress grid artifacts, are bulky, and have limited patient positioning flexibility. Described as a practical and compact high ratio, high primary transmission mammography grid system. In Phase I the feasibility of such an approach was demonstrated. The goals in Phase II are to design and fabricate a high ratio, high primary transmission grid system; to evaluate its performance with phantoms; and to demonstrate its clinical utility. PROPOSED COMMERCIAL APPLICATIONS: The invention and technology described and being developed is directly applicable to clinical mammography. Two grid systems are used on every mammography unit. The technology being developed will be superior to conventional mammography grids and will be comparable in cost.

众所周知，散射的X射线会显著降低乳房X射线照相术中的图像对比度。因此，商业上可获得的乳房X线摄影装置都采用低比率栅格以减少散射和图像对比度的影响。然而，传统的乳房X线摄影网格在其控制散射的能力方面受到限制，特别是对于厚的致密乳房，并且通过更有效的散射控制，图像对比度的显著改善是可能的。这种改进已经在高比率、高初级输电网中得到证明。然而，这些网格必须移动通过大的距离以抑制网格伪影，体积庞大，并且具有有限的患者定位灵活性。描述为一种实用、紧凑的高比率、高原始透射率乳腺X射线摄影滤线栅系统。在第一阶段，这种方法的可行性得到了证明。第二阶段的目标是设计和制造一个高比率，高初级传输电网系统，以评估其性能与phantomy，并证明其临床实用性。建议的商业应用：所描述和正在开发的发明和技术可直接应用于临床乳房X线摄影。每个乳房X线摄影机上使用两个网格系统。正在开发的技术将上级传统的乳房X线摄影网格，并且在成本上具有可比性。