高频超声皮肤成像技术的研究

The Research of Skin Imaging Technology with High Frequency Ultrasound

目的通过研制高频超声皮肤成像系统,对皮肤的超声图像进行分析,探索皮肤结构的影像学特征,以探索高频超声成像在皮肤疾病诊断中的价值。方法成像系统采用50 MHz单元超声换能器,机械线性扫描方式进行成像。通过线靶扫描和临床试验验证系统的分辨力和对皮肤组织及其病变的分辨能力。结果成像系统的分辨力均达到50 mm,正常皮肤组织的细微结构清晰可见,一些病变在声像图中有明显的表现。结论50 MHz的超声皮肤成像系统具有很高的分辨率,对皮肤结构的观察及疾病的诊断有一定的价值。

Objective Developing a high-frequency ultrasonic skin imaging system to obtain the high resolution ultrasonic image of the skin. And further analyzing the ultrasonic images of skin to explore the imaging characteristics of skin structure and then explore the value of high-frequency imaging in the application of skin diagnosis. Methods 50 MHz single element ultrasonic transducer, mechanic linear scanning method is used in the imaging system. The resolution and the ability of recognize the skin issue is verified by linear target scanning and clinical trials. Results Both the axial and lateral resolution of the system reaches 50um. The subtle structure of normal skin tissue is clearly visible. Some diseases have obvious appearance in the image. Conclusions 50 MHz ultrasonic skin imaging system is of high resolution and is valuable to skin structure detect and disease diagnosis.