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: 6443552
• 负责人: David M. Gauntt
• 金额: $ 54.02万
• 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 2004-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6443552
• 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，在乳房X光摄影中，散射X射线会显著降低图像对比度。因此，商业上可用的乳房X光照相设备都使用低比例栅格来减少散射和图像对比度的影响。然而，传统的乳房X光摄影栅格在控制散射方面的能力有限，特别是对于厚而致密的乳房，通过更有效的散射控制可以显著改善图像对比度。这种改进已经在高比率、高一次输电电网中得到了证明。然而，这些网格必须移动很长的距离才能抑制网格伪影，而且体积庞大，患者定位的灵活性有限。介绍了一种实用紧凑的高比率、高一次透射率的乳房X光摄影栅格系统。在第一阶段，论证了这种办法的可行性。第二阶段的目标是设计和制造一种高比率、高一次输电电网系统；用模体评估其性能；并展示其临床实用价值。拟议的商业应用：所描述和正在开发的发明和技术直接适用于临床乳房X光检查。每个乳房X光摄影单元都使用了两个栅格系统。正在开发的技术将优于传统的乳房X光照相网格，并且成本相当。