MRI: Acquisition of a High Resolution X-ray Tomography Unit

MRI：获取高分辨率 X 射线断层扫描装置

• 批准号: 0521309
• 负责人: Antonios Zavaliangos
• 金额: $ 34.93万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0521309&HistoricalAwards=false
• 关键词: MRI; Acquisition; Resolution; ray; Tomography

The purpose of this project is to acquire a high resolution X-ray microtomography system that will fulfill the characterization needs for research projects of a large group of faculty spanning several departments including Materials Science and Engineering, Mechanical, Civil and Biomedical Engineering and the College of Medicine. X-ray microtomography is a non-destructive characterization technique that provides cross-sectional images in planes through a component. Commercial computerized tomography (CT) systems with a microfocus X-ray provide a viable alternative of the high quality microtomography at Synchrotron sources. Such commercial CT systems offer an unprecedented level of flexibility due to their affordable price, small footprint and ease of operations. This instrument will provide non-destructive, three dimensional, quantitative characterization capability for a large variety of current and new projects in the areas of: (a) processing and characterization of materials (including pharmaceutical compacts, paper, environmentally conscious composite materials, quarry fines, dredged materials, ground rubber tires), (b) bone microstructure and properties, (c) scaffold design, evaluation and rapid prototyping for biomedical applications, (d) fundamental studies in the microstructure sensitive design methodologies, (e) novel materials in civil engineering. In fact, a very wider user base in envisioned beyond the 5 PIs and 5 senior personnel in this award. This system is characterized by high resolution with smallest detail at low contrast resolution (10% MTF) up to 1mm and pixel size at maximum magnification 0.9 mm. It is equipped with a 10 Megapixel 12-bit digital cooled CCD. A four-node network cluster will be used for rapid image reconstruction and analysis. It is proposed that the instrument be housed in the Materials Characterization Laboratory in the new Bossone Engineering Research Building and administrated by the Centralized Materials Characterization Facility (CMCF). CMCF houses a comprehensive array of state-of-the art materials characterization instruments capable of meeting the needs of researchers within the university, other academic institutions and regional industries. Broader impacts from the acquisition of this instrument include the enhancement the educational activities of Drexel University at both undergraduate and graduate level, and the potential for additional outreach activities to high school students and industry via hands on demonstrations and user group meetings respectively.

该项目的目的是获得一个高分辨率的X射线显微断层扫描系统，将满足跨几个部门，包括材料科学与工程，机械，土木和生物医学工程和医学院的一大群教师的研究项目的表征需求。X射线显微断层扫描是一种非破坏性表征技术，可提供穿过部件的平面中的横截面图像。商业计算机断层扫描（CT）系统与微焦点X射线提供了一个可行的替代高品质的显微断层扫描同步辐射源。这种商业CT系统由于其实惠的价格、小的占地面积和易于操作而提供了前所未有的灵活性。 该仪器将为以下领域的各种现有和新项目提供非破坏性、三维、定量表征能力：（a）材料的加工和特性鉴定（包括药物压块、纸、环境意识复合材料、采石场细粉、疏浚材料、磨碎的橡胶轮胎），（B）骨微结构和性质，（c）支架设计，生物医学应用的评估和快速原型制作，（d）微观结构敏感设计方法的基础研究，（e）土木工程中的新材料。事实上，除了5名PI和5名高级人员之外，还设想了一个非常广泛的用户群。 该系统的特点是高分辨率与最小的细节在低对比度分辨率（10%MTF）高达1毫米和像素大小在最大放大率0.9毫米。它配备了一个10万像素的12位数字冷却CCD。一个四节点网络集群将用于快速图像重建和分析。 建议将该仪器安置在新Bossone工程研究大楼的材料表征实验室，并由中央材料表征设施（CMCF）管理。CMCF拥有一系列最先进的材料表征仪器，能够满足大学，其他学术机构和区域行业研究人员的需求。更广泛的影响，从收购该仪器包括增强德雷克塞尔大学在本科和研究生水平的教育活动，并通过动手示范和用户组会议分别为高中生和行业的额外推广活动的潜力。