Non-iterative beamforming based on Huygens principle for multistatic ultrawide band radar: application to breast imaging
Non-iterative beamforming based on Huygens principle for multistatic ultrawide band radar: application to breast imaging
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DOI：
10.1049/iet-map.2014.0621
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发表时间：
2015-09-17
影响因子：
1.7
通讯作者：
Craddock, Ian
中科院分区：
文献类型：
--
作者：
Ghavami, Navid;Smith, Penny Probert;Craddock, Ian
本研究探讨了一个简单的微波波束形成方法，使用惠更斯散射原理（这里称为惠更斯原理方法）检测乳腺病变的性能。波束形成方法类似于非迭代时间反演，因为接收到的波被传播回材料中，尽管其衰减处理不同。单次通过算法不需要逆模型的解，使其计算效率高，因此能够提供适合临床使用的吞吐量。它的性能进行比较与时间延迟波束形成，这可能是实现类似的计算复杂性，一组幻影，包括一个有损介质，模仿乳腺组织。该方法被用来成像的商业制造的解剖形状的乳房体模与多个隐藏的夹杂物模仿肿瘤。该程序是能够识别和本地化的体积内的显着的散射体，只有近似的先验知识的目标对象的介电特性，尽管其基本假设的一个单一的散射体模型。
This study examines the performance of a simple microwave beamforming method using the Huygens scattering principle (called here the Huygens principle method) for detecting breast lesions. The beamforming method is similar to non-iterative time reversal in that the wave received is propagated back into the material, although differs in its treatment of attenuation. The single pass algorithm does not require a solution to an inverse model, making it computationally efficient and so able to offer a throughput appropriate for clinical use. Its performance is compared with time-delay beamforming, which may be implemented with similar computational complexity, on a set of phantoms, including a lossy medium, mimicking breast tissue. The method was used to image a commercially fabricated anatomically shaped breast phantom with multiple hidden inclusions mimicking tumours. The procedure was able to identify and localise significant scatterers inside the volume, with only approximate a-priori knowledge of the dielectric properties of the target object, in spite of its underlying assumption of a single scatterer model.