体积霍尔效应断层扫描——一项可行性研究。
Volumetric Hall effect tomography--a feasibility study.
作者信息
Wen H
机构信息
Laboratory of Cardiac Energetics, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1061, USA.
出版信息
Ultrason Imaging. 1999 Jul;21(3):186-200. doi: 10.1177/016173469902100303.
Abstract
Hall effect imaging is an ultrasound-based method of mapping spatial variations in the dielectric constants of an acoustically-uniform sample. This paper presents three-dimensional Hall effect images of phantoms obtained by scanning a single transducer across a two-dimensional grid, effectively simulating two-dimensional phased-array signal reception. The experiments demonstrate the feasibility of volumetric Hall effect tomography and show the advantage of volumetric scans over planar scans. The images reflect several limitations of the current scanning method and point to directions for further hardware development. The inherent limitations of Hall effect imaging are also discussed in light of these results.
摘要
霍尔效应成像 是一种基于超声的方法，用于绘制声学均匀样本介电常数的空间变化。本文展示了通过在二维网格上扫描单个换能器获得的体模三维霍尔效应图像，有效地模拟了二维相控阵信号接收。实验证明了体积霍尔效应断层扫描的可行性，并显示了体积扫描相对于平面扫描的优势。这些图像反映了当前扫描方法的一些局限性，并指出了进一步硬件开发的方向。还根据这些结果讨论了霍尔效应成像的固有局限性。
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