OPTIMIZED MAMMOGRAPHY INSTRUMENT

优化的乳房X线摄影仪器

• 批准号: 3789414
• 负责人: A EIDSATH
• 金额: --
• 依托单位: NATIONAL CENTER FOR RESEARCH RESOURCES
• 依托单位国家: 美国
• 资助国家: 美国
• 起止时间: 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/3789414
• 关键词: bioengineering /biomedical engineering; biomedical equipment development; clinical biomedical equipment; female; human subject; image enhancement; mammography; radiation dosage; radiobiology

Mammography plays a vital part in the early detection of breast cancer. Unfortunately, mammography units being used today have never been analyzed from a systems point of view. Multiparameter optimization studies of a mammography system have been reported by Muntz et al. (Med Phys 12:5, 1985) in which the patient dose was minimized while satisfactory image quality was maintained. The most important new feature of the design is the presence of an array of thin metal vanes arranged in an arc about the x-ray source, between the breast and the film. The vanes absorb scattered radiation and thus improve the quality of the image. In order for the vanes not to image on the film, the grid must move in a precisely controlled profile during the exposure.

乳腺X线摄影在早期发现乳腺癌方面起着至关重要的作用。 不幸的是，今天使用的乳房X光检查设备从未被 从系统的角度分析。 多参数优化 Muntz等人（Med Phys 12：5，1985），其中患者剂量被最小化， 保持了令人满意的图像质量。 最重要的新 该设计的特点是存在一个薄金属叶片阵列 在乳房和乳房之间围绕X射线源以弧形布置， 电影 叶片吸收散射辐射，从而提高质量 图像的。 为了使叶片不会在胶片上成像，网格 必须在曝光过程中以精确控制的轮廓移动。