MRI: Development of a State-of-the-art High-Resolution Tomography Facility Customized for Dynamic (4D) Imaging

1531316Wildenschild这主要研究仪器（MRI）计划资助支持一个为期两年的项目，以开发定制的高分辨率X射线计算机断层扫描（CT）成像系统，其功能包括螺旋扫描，感兴趣区域成像和时间分辨动态（4D）成像。 所开发的仪器将首次在学术实验室中提供亚微米分辨率的能力，高保真度的计算X射线断层成像的内部地质介质，现在只有在国家同步加速器光源的光束时间是非常有限的，非常有竞争力的能力之外获得甚至有限（多日）访问。 该项目将与澳大利亚堪培拉的澳大利亚国立大学应用数学系的同事合作。X射线CT仪器将作为一个共享实验室进行管理，并设在俄勒冈州州立大学的化学、生物和环境工程学院。 该仪器将用于需要非破坏性高分辨率的研究和研究培训（微米至亚微米尺度）对天然物质内部和流体通过多孔介质的流动进行成像，包括根据对玄武岩熔岩细尺度泡状结构的观察研究火山喷发机制，研究土壤力学，以改进防止滑坡、液化、和土壤的水力坍塌，以及多孔介质中流体（包括多相流体）流动的基本行为的研究，以支持环境修复工作，CO2的地质封存，地热能开采，地下水修复和管理。 PI打算为俄勒冈州的外展工作开发X射线CT图像可视化模块？位于俄勒冈州纽波特的哈特菲尔德海洋科学中心。 地下流体行为的研究对地下水资源的管理、修复工作和表征地下油气藏具有重要意义。 因此，这笔赠款与国家科学基金会促进国家福利的使命是一致的。

1531316WildenschildThis Major Research Instrumentation (MRI) Program grant supports a two year project to develop a customized high resolution X-ray computed tomography (CT) imaging system with capabilities including helical scanning, region-of-interest imaging, and time resolved dynamic (4D) imaging. The developed instrument would offer the first time in an academic lab, the capability for sub-micron resolution, high fidelity computed X-ray tomographic imaging of the interiors of geologic media, outside of capabilities only now available at National Synchrotron Light Sources where beam time is extremely limited and highly competitive to gain even limited (multi-day) access. The project will involve collaboration with colleagues in the Applied Math Department at Australian National University in Canberra, Australia. The X-ray CT instrument will be managed as a shared-use laboratory, and housed in the School of Chemical, Biological and Environmental Engineering at Oregon State University. The instrument will be employed for research and research training in studies requiring non-destructive high resolution (micron to sub-micron scale) imaging of the interiors of natural materials and the flow of fluids through porous media including studies of eruptive mechanisms of volcanoes based on observation of the fine-scale vesicular structure of basaltic lavas, studies of soil mechanics to improve mitigation strategies against landslides, liquefaction, and hydraulic collapse of soils, and studies of the fundamental behavior of fluid (including multi-phase fluids) flow in porous media to support environmental remediation efforts, geologic sequestration of CO2, geothermal energy extraction, and groundwater remediation and management. The PIs intend to develop X-ray CT image visualization modules for outreach efforts at Oregon State?s Hatfield Marine Science Center in Newport, Oregon. Studies of the behavior of fluids in the subsurface have important implications of the management of groundwater resources, remediation efforts and in characterizing subsurface hydrocarbon reservoirs. As such this grant is congruent with NSFs mission of advancing the national welfare.