HIGH RATIO AIR INTERSPACE MAMMOGRAPHY GRID SYSTEM

一段时间以来，人们已经知道，散射的X射线显着降低图像对比度在乳房摄影。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的影响并提高图像对比度。然而，传统的乳房X线摄影网格在控制散射的能力方面受到限制，特别是对于厚的致密乳房，并且使用更有效的散射控制技术可以显著改善图像对比度。这种改进已经用高比率的空气间隙格栅证明。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。介绍了一种实用、紧凑的高比率空气间隙乳腺摄影滤线栅系统。第一阶段的目标是证明该技术的可行性。第二阶段的目标是构建一个紧凑的高比率空气间隙乳腺X射线摄影网格系统，并证明其临床实用性。拟议的商业应用：所描述和正在开发的本发明和技术可直接应用于临床乳房X射线照相术，并且可应用于诊断X射线成像的其它分支。

For some time it has been 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 improve image contrast. However, conventional mammography grids are limited in the ability to control scatter, particularly for thick dense breasts, and marked improvement in image contrast is possible with more efficient scatter control techniques. Such improvement has been demonstrated with high ratio air interspace grids. However, these grids have to move through a large distance to suppress grid artifacts, are bulky, and have limited patient positioning flexibility. Described is a practical and compact high ratio air interspace mammography grid system. The goal in Phase I is to demonstrate the feasibility of the technology. The goal in Phase II is to construct a compact high ratio air interspace mammography grid system and demonstrate its clinical utility. PROPOSED COMMERCIAL APPLICATIONS: The invention and technology described and being developed is directly applicable to clinical mammography and can be applied to other branches of diagnostic x-ray imaging.