超声图像预处理方法的改进研究  

Study on the improvement of the pre-processing of the medical ultrasound image

作　　者：刘培锋[1] 刘红秀[1] 

机构地区：[1]广东药学院医药信息工程学院,广州510006

出　　处：《检验医学与临床》2010年第8期686-688,共3页Laboratory Medicine and Clinic

摘　　要：目的在对超声图像传统预处理方法进行处理后效果对比分析的基础上,提出一些改进措施。方法以超声医学影像为关键点,分析其噪声,提取噪声特征,从空间域处理技术来阐述超声医学影像的预处理方法。结果生物医学图像预处理技术是医学图像系统中最关键的技术之一,直接影响医生的正确诊断,以及后期的医学数据分析。对原始图像经过双精度处理,图像整体亮度会被拉低。变换图像窗口,选择感兴趣的灰度区域进行灰度提升,增强图像的灰度可视信息,对比未做双精度处理前的实验。结论采用新的灰度处理方法后的图像,具有平滑的边缘,清晰的细节,能更好地保留细节信息,具有一定的现实意义和实用价值。Objective To explore some measures to improve the traditional pre-processing method of ultrasound medical image,and the effect was analysed. Methods To analyze the noise and the characteristics in the ultrasound medical image,and describe the ultrasound medical imaging pre processing methods in terms of the space do- main. Results The biomedical image pre-processing technology is the most critical one in medical image systems, which has an impact on the doctor＇s diagnosis and medical data analysis. The whole image brightness reduced after the double-precision processing. By the way of changing the window of the ultrasound medical image, lifting the grayscale of interest regions,enhancing image grayscale visibility and comparing the experiment via the double-precision processing with the experiment without double-precision processing. Conclusion The experiment results show that the ultrasound medical image processed by the new gray processing method has the smooth edges, high definition detail and reserves the detail image information better. It has some practical significance and feasibility.

关 键 词：超声影像 噪声抑制 图像增强 直方图 

分 类 号：R445.1[医药卫生—影像医学与核医学]