Facility Support: High-Resolution X-ray Computed Tomography Laboratory

设施支持：高分辨率X射线计算机断层扫描实验室

• 批准号: 1762458
• 负责人: Richard Ketcham
• 金额: $ 113.48万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1762458&HistoricalAwards=false
• 关键词: Facility; Support; Resolution; ray; Computed

This project will continue NSF support of the University of Texas High-Resolution X-ray Computed Tomography Facility (UTCT) as a shared multi-user facility supporting geoscience research. Computed tomography (CT) is ideally suited for many geological applications, as it nondestructively creates 3D imagery of the interiors of rocks, fossils, meteorites and other materials. Successful application of this technique requires both advanced instrumentation and experienced operators to optimize data acquisition and processing, and the ability to design and implement rigorous and well-targeted 3D data analysis strategies. UTCT serves both as a source of high-quality data for investigators without access to CT instrumentation, and as a repository of experience and expertise in all aspects of CT data acquisition and analysis, both through individual consultation and collaboration and by teaching short courses. Having UTCT as a national resource thus reduces the number of instruments the nation needs to conduct CT-involved research, and helps those instruments that we do invest in to be used to best advantage. Advances in CT data acquisition and processing at UTCT have also been used in many other fields. UTCT also provides leadership in management and curation of CT data sets, through our long-term investment in the DIGIMORPH digital library. This project will provide partial support of the UTCT facility operating expenses for the next three years, including staff, equipment maintenance, and computing infrastructure. In addition, funds will be used to upgrade the primary CT instrument to enhance data processing speed and the flexibility of the detector gantry to enable scans of larger objects and scanning at higher resolution. The facility support will allow for timely and high-quality service for a large user base; development of new CT methodologies; and expansion of short courses in HRXCT data acquisition, visualization, and quantification.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将继续NSF对德克萨斯大学高分辨率X射线计算机断层扫描设备（UTCT）的支持，作为支持地球科学研究的共享多用户设备。计算机断层扫描（CT）非常适合许多地质应用，因为它可以无损地创建岩石，化石，陨石和其他材料内部的3D图像。 该技术的成功应用需要先进的仪器和经验丰富的操作人员来优化数据采集和处理，以及设计和实施严格和有针对性的3D数据分析策略的能力。UTCT既可以为没有CT仪器的研究人员提供高质量的数据来源，也可以通过个人咨询和合作以及短期课程教学，作为CT数据采集和分析各个方面的经验和专业知识库。因此，将UTCT作为国家资源减少了国家进行CT相关研究所需的仪器数量，并有助于我们投资的那些仪器得到最佳利用。 UTCT在CT数据采集和处理方面的进步也被用于许多其他领域。 UTCT还通过对DIGIMORPH数字图书馆的长期投资，在CT数据集的管理和策展方面发挥领导作用。该项目将为UTCT设施未来三年的运营费用提供部分支持，包括人员、设备维护和计算基础设施。此外，资金将用于升级主要的CT仪器，以提高数据处理速度和探测器机架的灵活性，从而能够扫描较大的物体并以更高的分辨率进行扫描。 该设施的支持将允许及时和高质量的服务，为一个庞大的用户群，新的CT方法的发展，并在HRXCT数据采集，可视化和quantitation.This奖项扩展短期课程反映了NSF的法定使命，并已被认为是值得的支持，通过评估使用基金会的智力价值和更广泛的影响审查标准。

项目成果

4D Imaging of Mineral Dissolution in Porous Carbonado Diamond: Implications for Acid Digestion and XCT Measurement of Porosity and Material Properties

多孔黑金刚石中矿物溶解的 4D 成像：对孔隙率和材料特性的酸消解和 XCT 测量的影响

• DOI: 10.3389/feart.2019.00288
• 发表时间: 2019
• 期刊: Frontiers in Earth Science
• 影响因子: 2.9
• 作者: Eckley, Scott A.;Ketcham, Richard A.
• 通讯作者: Ketcham, Richard A.

Orogenic gold ores in three-dimensions: A case study of distinct mineralization styles at the world-class Cuiabá deposit, Brazil, using high-resolution X-ray computed tomography on gold particles

三维造山金矿石：使用金颗粒高分辨率 X 射线计算机断层扫描对巴西世界级 Cuiabá 矿床的不同矿化类型进行案例研究

• DOI: 10.1016/j.oregeorev.2021.104584
• 发表时间: 2022
• 期刊: Ore Geology Reviews
• 影响因子: 3.3
• 作者: Ferraz da Costa, Marília;Kyle, J. Richard;Lobato, Lydia M.;Ketcham, Richard A.;Figueiredo e Silva, Rosaline C.;Fernandes, Raphael C.
• 通讯作者: Fernandes, Raphael C.

Human Occupation of the North American Colorado Plateau ∼37,000 Years Ago

• DOI: 10.3389/fevo.2022.903795
• 发表时间: 2022-07
• 作者: T. Rowe;T. Stafford;D. Fisher;J. Enghild;J. Quigg;R. Ketcham;J. Sagebiel;R. Hanna;M. Colbert

Accurate Measurement of Small Features in X‐Ray CT Data Volumes, Demonstrated Using Gold Grains

• DOI: 10.1029/2018jb017083
• 发表时间: 2019-04
• 期刊: Journal of Geophysical Research: Solid Earth
• 作者: R. Ketcham;A. Mote

Resolution-invariant measurements of small objects in polychromatic CT data

多色 CT 数据中小物体的分辨率不变测量

• DOI: 10.1117/12.2532082
• 发表时间: 2019
• 期刊: Developments in X-Ray Tomography XII
• 作者: Ketcham, Richard A.