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

在孩子越来越少的21世纪初，本该成为母亲的年轻女性因乳腺癌而死亡的事例层出不穷。为了诊断乳腺组织，本文研究了超声诊断设备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，旨在实现每个人都能获取高分辨率图像，方便操作的机制。本课题研究的是超声图像制作中的自调节与图像质量的判断。厚生劳动省建议通过使用x射线的乳房x光检查来诊断乳房。然而，为了医学检查而反复暴露在x光下对人体是危险的。另一方面，超声诊断对人体的侵入性低。超声图像的获取需要专业医生和检测工程师的先进技术。如果能够自动获得不依赖于检查人员能力的客观图像，即使检查人员技术不高，也可以进行高质量的诊断。超声诊断方便咨询医师，提高了重复医学检查的水平。对人体安全的乳腺癌诊断有望得到反复传播，癌症早期检测的可能性也有望迅速提高。为了了解乳腺肿瘤切除手术中肿瘤的位置和大小，并确定切除区域，需要一个手术导航，显示术前和术中肿瘤图像的三维模型。超声诊断设备具有体积小、安全、低侵入等特点，在诊断中应用广泛。然而，医学超声图像由于受声波干扰而产生的特殊散斑噪声而变得模糊，并且在感兴趣区域的边界处空间分辨率较低，观察者无法获得清晰的三维图像。为了获得清晰的三维图像，有必要在二维图像阶段对散斑进行去除，并提取轮廓。本研究从超声图像中提取出感兴趣区域的轮廓。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