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Qualitative analysis of ultrasonic diagnosis using image processing (Developement and application of real-time image processing)

利用图像处理进行超声诊断的定性分析（实时图像处理的开发与应用）

基本信息

批准号：
61460223
负责人：
KANDA Shigenobu
金额：
$ 4.1万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

项目摘要

Using CT computer system, quantitative and qualitative estimations for the echo images of normal and pathological structures in the maxillo-facial and neck regions were carried out in various scanning directions. The images were recorded on videotape and digitized. The analysis of some interested static images in the ultrasonic dynamic views was attemped on the echo-attenuation and the echo-distribution with histogram. The distribution of echo intensity in region of interest in histogram of the clinical cases was displayed. The shape of the histogram was evaluated using the mean value, the mode value, the skewness and the kurtosis. The results were as follows.1)Utilizing the echo-phantoms, the attenuation of echo intensity in regions of interest was gradually increas ed with depth out of the focus of echo-beam and seemed to be variated with the difference of density in the same structure.2)In clinical cases, the attenuated characteristic curve was gradually decreased in normal salivary glands and sialoadenitis, increased in pleomorphic adenoma.3)The echo intensity was higher in pleomorphic adenoma in the other lesions.4)Distribution of the echo intensity of inflammatory group(sialoadenitis) showed significant difference as compared with normal group.5)The value of skewness was higher in metastatic lymph-node.6)The value of kurtosis was lower in lipoma than in the other lesions.7)In malignant lymphoma, the mean, the mode and the mean position was lower than in the other lesions.Utilization of CT computer system would be more convenient in the histogram analysis than the use of other devices. We concluded that the echo-histogram analysis of the pathological structures was useful in making the criteria of image diagnosis.

应用CT计算机系统，对颌面颈部正常和病变结构在不同扫描方向上的回声图像进行了定量和定性评价。这些图像被记录在录像带上并数字化。对超声动态视图中感兴趣的静态图像进行了回波衰减和回波分布直方图分析。在直方图中显示了临床病例感兴趣区域的回声强度分布。使用平均值、众数、偏度和峰度来评价直方图的形状。结果表明：（1）在超声显像中，感兴趣区的回声强度衰减随远离超声束焦点的深度而逐渐增大，艾德随同一结构内密度的不同而变化;（2）在临床病例中，正常涎腺和涎腺炎的衰减特征曲线逐渐减小，多形性腺瘤的回声强度高于其他病变; 4）炎症组的回声强度分布5）偏度值在转移性淋巴结中较高7）恶性淋巴瘤的平均值、众数和平均位置均低于其他病变，利用CT计算机系统进行直方图分析比其他设备更方便。我们认为，回声直方图分析的病理结构是有用的，制定标准的图像诊断。