A study on an acquisition system of mammary gland three-dimensional ultrasonic images

在21世纪初，面对一个孩子更少的社会，本应成为母亲的年轻女性死于乳腺癌的案例层出不穷。为了对乳腺组织进行诊断，本文研究了超声诊断仪中的高分辨率三维图像采集方法。它不依赖于审查员获取图像的能力，其目的是实现每个人都能够获得易于操作的高分辨率图像的机制。研究主题是超声图像制作过程中图像质量的自我调整。厚生劳动省建议通过使用X光的乳房X光检查来诊断乳腺。然而，反复接受X光检查对人体是危险的。另一方面，超声的诊断是对人体的低侵入性。…需要一名专家医生和检验工程师的高级技能更多的是获取超声图像。如果可以自动获取不依赖于检查者能力的客观图像，则即使对于技能较浅的检查者，也有可能以良好的质量进行诊断。向医生咨询超声诊断变得容易，并且改进了重复医学检查。为了了解乳腺肿瘤切除手术中肿瘤的位置和大小，确定切除范围，需要一个手术导航，用手术前和手术中的肿瘤图像显示三维模型。超声诊断设备具有体积小、低侵入性安全的特点，在诊断中得到了广泛的应用，但由于存在与声波干扰的斑点噪声，以及在感兴趣区域的边界处空间分辨率低，使得医学超声图像变得模糊，观察者无法获得清晰的三维图像。为了得到清晰的三维图像，需要对二维图像进行相干斑抑制，并提取轮廓。本研究从超声波图像中提取出感兴趣区域的轮廓。较少

In the beginning of the 21st century that faces a society with fewer children, a case that young women who should become mother die due to a breast cancer is unending. To diagnose a mammary gland organization, high resolution three-dimensional image acquisition method in ultrasonic diagnostic equipment is researched in this study. It does not depend on a capability of examiner to acquire the image, and it aims at the achievement of the mechanism for everyone to be able to acquire high resolution image for an easy operation. The research topic is a self adjustment with the judgment of the image quality in making of the ultrasonic image.The Ministry of Health, Labour and Welfare recommends a breast diagnosis by a mammography that uses X-rays. However, repeated exposure by X-rays for a medical examination is dangerous for a human body. On the other hand, a diagnosis of ultrasonic is low invasion to human body. An advanced skill of an expert doctor and inspecting engineer is necessary for … More acquiring the ultrasonic image. If objective images not depending on a capability of examiner can be acquired automatically, it is possible to diagnose it with a good quality even with examiner whose skill is shallow. It becomes easy to consult a physician ultrasonic diagnostics, and repeated medical examination is improved. It is expected a safe breast cancer diagnosis for human body is spread repeatedly, and a possibility that the early stage detection of cancer is improved rapidly.To understand a tumor localization and a size at the mammary gland tumor excision operation and to decide the excision area, an operation navigation that displays three dimensional models with the tumor image before and during the operation is required. Ultrasonic diagnostic equipment has features that is small and safe for low-invasion, and it is used widely by diagnosis.However, medical ultrasonic images becomes indistinct because a peculiar noise of speckle by interference with the sound wave exists, and the spatial resolution is low at a boundary in a area of interest, and an observer does not obtain a clear three dimensional image. It is necessary to reduce the speckle at the stage of two dimensional images and to extract a contour to compose a sharp three dimensional image. The contour of the area of interest has been extracted from the ultrasonic wave image in this research. Less