本文提出一种热声、光声双模态乳腺肿瘤检测成像系统。本装置中，脉冲微波和脉冲激光分别为热声、光声激发源，产生的热声、光声信号被同一个超声探测器、同一套数据采集装置接收，用同一种成像算法重建出图像。该系统可同时获取多种互补的诊断参数，提高检测早期乳腺肿瘤的准确率。

In this paper, we propose a thermoacoustic (TA)and photoacoustic (PA)dualmodal imaging system for early breast tumor detection. In this system, pulsed microwave and pulsed laser are respectively used as excitation source of TA and PA imaging. The generated TA and PA signals are received by the same ultrasonic detector and the same data acquisition device, and the image is reconstructed by the same imaging algorithm. The system can obtain multiple complementary diagnostic parameters simultaneously to improve the accuracy of early detection of breast tumor.