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报道了一种利用长焦区聚焦超声换能器检测光声信号的扫描光声乳腺成像系统.通过增加聚焦换能器焦区的长度,该技术可以快速实现对大块组织(如乳腺)的光声成像.测试结果表明,该实验系统能够对大块模拟样品中吸收体的位置、尺寸以及光能量吸收情况实现较为准确的成像.另外,实验中,该系统还可便捷地与传统的超声技术相结合,从而实现多模式复合的乳腺癌诊断.初步结果显示了该技术路线在乳腺癌早期诊断应用上的前景.
A scanning photoacoustic mammary imaging system using telephoto-focusing ultrasound transducer to detect photoacoustic signals is reported.This technique can quickly realize the imaging of large tissue (such as breast) by increasing the focal length of the focusing transducer Photoacoustic imaging.The test results show that the experimental system can accurately image the position, size and light energy absorption of the absorber in the bulk sample.In addition, in the experiment, the system can also be easily and traditional ultrasonic Technology in order to achieve multimodal diagnosis of breast cancer.Preliminary results show that the technology route in the early diagnosis of breast cancer prospects.