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首页> 外文会议>International Workshop on Digital Mammography(IWDM 2006); 20060618-21; Manchester(GB) >Mammography Tomosynthesis System for High Performance 3D Imaging
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Mammography Tomosynthesis System for High Performance 3D Imaging

机译：用于高性能3D成像的乳腺X线断层扫描合成系统

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摘要

Tomosynthesis provides a major advance in image quality compared to conventional projection mammography by effectively eliminating the effects of superimposed tissue on anatomical structures of interest. Early tomosynthesis systems focused primarily on feasibility assessment by providing 3-dimensional images to determine performance advantages. However, tomosynthesis image quality depends strongly on three key parameters: 1) detector performance at low dose, 2) angular range and number of projections acquired in the tomosynthesis scan, and 3) reconstruction algorithm processing characteristics used to create slice images from the measured projections. In this work, a new GE mammo-graphy tomosynthesis research system was developed that incorporates key improvements in each of these three areas compared to an early feasibility prototype system in use at Massachusetts General Hospital from 2000 to 2004. The performance gains that can be achieved by these enhancements are characterized, and clinical images acquired with the system at the University of Michigan Cancer and Geriatrics Center are presented. The advanced research system also provides the ability to acquire mechanically co-registered x-ray tomosynthesis and ultrasound images of the breast, and initial dual modality images are also presented.
机译：断层合成技术通过有效消除叠加的组织对目标解剖结构的影响，与传统的投影乳腺摄影相比，在图像质量方面取得了重大进步。早期的断层合成系统主要通过提供3维图像来确定性能优势，从而着眼于可行性评估。但是，断层合成图像质量很大程度上取决于三个关键参数：1）低剂量时的检测器性能，2）断层合成扫描中获得的角度范围和投影数量，以及3）用于从测量的投影中创建切片图像的重建算法处理特性。在这项工作中，开发了一种新的GE乳房X线断层扫描研究系统，与2000年至2004年在马萨诸塞州总医院使用的早期可行性原型系统相比，该系统在这三个方面均进行了重大改进。可以实现的性能提升通过这些增强功能进行表征，并展示了在密歇根大学癌症和老年医学中心使用该系统获取的临床图像。先进的研究系统还提供了获取乳房的机械共配准x射线断层合成和超声图像的能力，并且还显示了初始的双模态图像。

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