For radiated noise source can not be treated as point source in near-field,the locating model of line array was established by the sound image technique based on focused beamforming to solve the location of non-point source.
本文通过聚焦波束形成的聚焦声图技术,建立了近场线列阵定位模型,它可以对空间多目标进行定位,因此有效解决了非点源目标的辐射噪声源定位问题。
Objective To promote stability and accuracy of gradient vector flow (GVF) deformable models by improving external potential force field of ultrasound images under speckle noisy environments.
结果通过二值加噪图像和心脏超声图像的实验,验证了该方法的捕捉范围和处理噪声方面优于GVF。
Objective To improve the flexibility and stability of the filter in speckle reduction of ultrasound images.
方法使用二状态的瑞利、高斯混合分布对超声图像灰度分布进行拟合,并采用期望值最大化(expectation maximization,EM)算法实现混合分布的分解;根据分解结果预测图像中斑点噪声均匀分布的区域;通过对均匀区域统计特性的分析获取各向异性扩散的扩散参数。
This article presents an algorithm for semiautomatic segmentation of ultrasound images combining user intervention into the B spline snake models using a new kind of force field and a new control point insertion strategy.
提出了超声图像半自动分割的一种新方法。
Breast tumor classification based on shape features of ultrasonic images;
基于形态特征判别超声图像中乳腺肿瘤的良恶性
Quantitative analysis of fatty liver ultrasonic images;
脂肪肝超声图像的定量分析
Discussion on extraction of planar contour from ultrasonic image and rebuilding process of three-dimensional image;
超声图像的表面轮廓提取及三维图像重建过程的探讨
Automatic detection of breast tumor regions in medical ultrasound images with texture features;
基于纹理的乳房超声图像中肿瘤区域自动检测
Multi-characteristics recognition of breast tumor ultrasound images combining with elasticity parameters;
联合弹性特征的多特征乳腺肿瘤超声图像识别
The classification of the uterine myoma and the uterine adenomyosis from ultrasound images mainly depends on doctors experience and lacks objective criterions by now.
超声图像子宫肌瘤和腺肌病的区分目前主要依赖于医生的经验,缺乏客观的指标。
A system for hepatocirrhosis analysis based on features extracted from ultrasonic images of livers;
基于超声图像特征的肝硬化分析系统
[Method] Fast ICA algorithm is used to distinguish the hepatic fibrosis from the normal 2D ultrasonic images, which was based on the statistical independence.
方法采用FastICA算法,在基于正常肝组织与纤维化肝组织可以看作是独立信源的前提下,对同一病人不同纤维化时期和正常人的超声图像选取局部区域后分别进行独立分量分离。
The technique of three-dimensional (3D) reconstruction from medical ultrasonic images plays an important role in modern clinical application.
医学超声图像的三维重建技术在现代医学临床诊断中起着十分重要的作用。