Golnabi Amir H, Meaney Paul M, Epstein Neil R, Paulsen Keith D
Thayer School of Engineering, DartmouthCollege, NH 03755, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2011;2011:5730-3. doi: 10.1109/IEMBS.2011.6091418.
Microwave imaging is based on the electrical property (permittivity and conductivity) differences in materials. Microwave imaging for biomedical applications is particularly interesting, mainly due to the fact that available range of dielectric properties for different tissues can provide important functional information about their health. Under the assumption that a 3D scattering problem can be reasonably represented as a simplified 2D model, one can take advantage of the simplicity and lower computational cost of 2D models to characterize such 3D phenomenon. Nonetheless, by eliminating excessive model simplifications, 3D microwave imaging provides potentially more valuable information over 2D techniques, and as a result, more accurate dielectric property maps may be obtained. In this paper, we present some advances we have made in three-dimensional image reconstruction, and show the results from a 3D breast phantom experiment using our clinical microwave imaging system at Dartmouth Hitchcock Medical Center (DHMC), NH.
微波成像基于材料的电学特性（介电常数和电导率）差异。用于生物医学应用的微波成像尤其引人关注，主要是因为不同组织的介电特性可用范围能够提供有关其健康状况的重要功能信息。在三维散射问题可合理地表示为简化二维模型的假设下，人们可以利用二维模型的简单性和较低计算成本来表征此类三维现象。尽管如此，通过消除过度的模型简化，三维微波成像相对于二维技术可提供潜在更有价值的信息，因此可能获得更准确的介电特性图。在本文中，我们展示了在三维图像重建方面取得的一些进展，并展示了使用我们位于新罕布什尔州达特茅斯希区柯克医疗中心（DHMC）的临床微波成像系统进行的三维乳房体模实验结果。
