ULTRASOUND SCATTERING FROM A DISTRIBUTION OF SPHERES IN A TISSUE-MIMICKING PHAN

组织模拟 PHAN 中球体分布的超声散射

• 批准号: 7956143
• 负责人: ROBERT C WAAG
• 金额: $ 0.08万
• 依托单位: CARNEGIE-MELLON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7956143
• 关键词: Acoustics; Biomedical Research; Computer Retrieval of Information on Scientific Projects Database; Funding; Grant; High Performance Computing; Institution; Research; Research Personnel; Resources; Source; Surface; Tissues; Translating; Ultrasonography; United States National Institutes of Health

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Compute the acoustic scattering for an arbitrary distribution of spheres suspended within a horizontally oriented rectangular phantom. This is accomplished via the multicentered T-Matrix approach, in which spherical expansions and angular spectrum expansions are used to express the scattered fields from the surfaces of the spheres and the surfaces of the phantom, respectively. In order to satisfy the various boundary conditions, transformation matrices are computed to relate spherical expansions to angular spectrum expansions, angular spectrum expansions to spherical expansions, and spherical expansions to translated spherical expansions. The results of numerical examples are computed for some representative cases.

该子项目是利用该技术的众多研究子项目之一 资源由 NIH/NCRR 资助的中心拨款提供。子项目及 研究者 (PI) 可能已从 NIH 的另一个来源获得主要资金， 因此可以在其他 CRISP 条目中表示。列出的机构是 对于中心来说，它不一定是研究者的机构。 计算悬浮在水平方向的矩形体模内的任意分布的球体的声学散射。这是通过多中心 T 矩阵方法实现的，其中球面展开和角谱展开分别用于表示来自球体表面和体模表面的散射场。为了满足各种边界条件，计算变换矩阵以将球面展开与角谱展开关联、将角谱展开与球面展开关联、以及将球面展开与平移球面展开关联。数值算例的结果是针对一些代表性案例进行计算的。