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

在面临少子化社会的21世纪初，本应成为母亲的年轻女性因乳腺癌而死亡的案例层出不穷。为了对乳腺组织进行诊断，研究了超声诊断设备中高分辨率三维图像的采集方法。它不依赖于检查者获取图像的能力，并且它旨在实现每个人都能够获取高分辨率图像以便于操作的机制。研究课题是在制作超声波图像时，通过判断图像质量进行自我调整。厚生劳动省推荐使用X射线的乳房X线摄影进行乳房诊断。然而，为了进行医学检查而反复暴露于X射线对人体是危险的。另一方面，超声诊断对人体的侵入性低。一个专家医生和检查工程师的先进技能是必要的， ...更多信息 获取超声图像。如果能够自动地取得不依赖于检查者的能力的客观图像，则即使是技术水平不高的检查者，也能够进行高质量的诊断。它变得很容易咨询医生超声诊断，并改善了重复的医疗检查。期望对人体的安全的乳腺癌诊断被反复传播，并且癌症的早期检测的可能性迅速提高。为了理解乳腺肿瘤切除手术中的肿瘤位置和大小并确定切除区域，需要在手术前和手术中显示具有肿瘤图像的三维模型的手术导航。超声波诊断设备具有体积小、安全性高、侵入性低的特点，在诊断中得到广泛应用，但由于存在与声波干涉的斑点等特有噪声，因此医用超声波图像变得模糊，感兴趣区域的边界的空间分辨率低，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，需要在二维图像阶段对散斑进行抑制，并提取轮廓。本研究从超声波图像中提取了感兴趣区域的轮廓。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