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Time-frequency analysis of the thermoacoustic signals for early breast cancer detection

机译:早期乳腺癌热声信号的时频分析

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The time-frequency(T-F) characteristics of the microwave-induced thermoacoustic signals generated from the tumors inside the breast are analyzed by Choi-Williams Distribution(CWD). The signals are simulated by finite-difference time-domain(FDTD) codes, with the semi-round breast model. The results indicate that round-shaped and ellipsoidal-shaped tumors with different sizes and shapes have different CWDs, and therefore, this T-F technique has the potential to detect different tumors and estimate its sizes and shapes, and become a new diagnostic method for early breast cancer.
机译:利用Choi-Williams分布(CWD)分析了由乳房内部肿瘤产生的微波诱导的热声信号的时频(T-F)特性。使用半圆形乳房模型,通过有限差分时域(FDTD)码对信号进行仿真。结果表明,不同大小和形状的圆形和椭圆形肿瘤具有不同的CWD,因此,这种TF技术具有检测不同肿瘤并估计其大小和形状的潜力,并成为早期乳腺癌的新诊断方法癌症。

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