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Robust Breast Cancer Imaging Based on a Hybrid Artifact Suppression Method for Early-Stage Tumor Detection
IEEE Access ( IF 3.9 ) Pub Date : 2020-01-01 , DOI: 10.1109/access.2020.3037450
Mehdi Mehranpour , Saughar Jarchi , Asghar Keshtkar , Ayaz Ghorbani , Ali Araghi , Okan Yurduseven , Mohsen Khalily

a high-resolution conformal array for detection of small size tumors inside the breast is proposed. The array consists of a novel cavity-backed low-profile aperture-stacked-patch (LP-ASP) antennas. The proposed antenna operates from 2.2 GHz to 13.5 GHz which enables the imaging system to be exploited across a high fractional bandwidth of approximately 149%. Thanks to the wide operating bandwidth of the designed antenna, the proposed system is not only applicable for a deep penetration imaging, but also for high resolution and accurate images acquisition. The proposed single element antenna has a compact size of $\mathrm {10 \times 10 \times 10.495 m}\mathrm {m}^{3}$ . So, it is possible to form a conformal array around the breast by applying numbers of the designed elements. Moreover, a Hybrid Artifact Suppression (HAS) method is presented to remove the artifact effects including skin reflection and mutual coupling between the elements. In this method, the artifact response of each channel is estimated using Independent Component Analysis (ICA) at the early-stage of the recorded signals. Additionally, in order to suppress the artifact data to accurately detect the malignant tumor, a Wiener filter is applied. To validate the practicality of the presented calibration algorithm in the proposed conformal array, the detection of a single spherical tumor (with a small diameter of 5 mm) within a realistic breast model in different scenarios is studied. Investigating of simulated and measured results of the designed antenna, and comparing quantitative metrics of successfully reconstructed tumor images by the proposed HAS and conventional calibration methods show the proposed system can be a good candidate for the breast cancer detection applications.

中文翻译:

基于用于早期肿瘤检测的混合伪影抑制方法的稳健乳腺癌成像

提出了一种用于检测乳房内小尺寸肿瘤的高分辨率共形阵列。该阵列由新型背腔式低剖面孔径堆叠贴片 (LP-ASP) 天线组成。建议的天线在 2.2 GHz 至 13.5 GHz 的范围内运行,这使得成像系统能够在大约 149% 的高分数带宽上被利用。由于所设计天线的宽工作带宽,所提出的系统不仅适用于深穿透成像,而且适用于高分辨率和准确的图像采集。所提出的单元天线具有 $\mathrm {10 \times 10 \times 10.495 m}\mathrm {m}^{3}$ 的紧凑尺寸。因此,可以通过应用设计元素的数量在乳房周围形成共形阵列。而且,提出了一种混合伪影抑制(HAS)方法来消除包括皮肤反射和元素之间相互耦合在内的伪影效果。在这种方法中,在记录信号的早期阶段使用独立分量分析 (ICA) 估计每个通道的伪影响应。此外,为了抑制伪影数据以准确检测恶性肿瘤,应用了维纳滤波器。为了验证所提出的校准算法在所提出的保形阵列中的实用性,研究了在不同场景下真实乳房模型中单个球形肿瘤(直径为 5 毫米)的检测。研究设计天线的模拟和测量结果,
更新日期:2020-01-01
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