In this letter, a phantom validation of a low-complexity microwave imaging device operating in free space in the 1–6.5 GHz frequency band is presented. The device, initially constructed for breast cancer detection, measures the scattered signals in a multibistatic fashion and employs an imaging procedure based on the Huygens principle. Detection has been achieved in both bone fracture lesion and bone marrow lesion scenarios using the superimposition of five doublet transmitting positions, after applying the rotation subtraction artifact removal method. A resolution of 5 mm and a signal-to-clutter ratio (3.35 in linear scale) are achieved confirming the advantage of employing multiple transmitting positions on increased detection capability.

中文翻译：

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用于骨病变检测的自由空间操作微波成像设备：体模研究

在这封信中，介绍了在 1–6.5 GHz 频段的自由空间中运行的低复杂度微波成像设备的幻像验证。该设备最初用于检测乳腺癌，以多双基地方式测量散射信号，并采用基于惠更斯原理的成像程序。在应用旋转减法伪影去除方法后，使用五个双联传输位置的叠加，在骨折病变和骨髓病变场景中都实现了检测。实现了 5 毫米的分辨率和信杂比（线性标度为 3.35），证实了在提高检测能力方面采用多个发射位置的优势。