Development of an Optical Lithography Method by Controlling Displayd Mask Patterns on a Liquid Crystal Panel and Construction of Solid Models of Human Organs with Three-Dimensional Rebuilding Technique from Two-Dimensional Image Data

根据所提出的方法，利用水银灯发出的紫外光通过纸做的掩膜进行了紫外光固化树脂的初步实验，得到了简单的固化模型。我们尝试了用液晶面板代替面具来控制紫外光的实验。由于透过液晶面板的紫外光太弱，实验没有成功终止。失败的原因是因为我们使用的是商业提供的液晶面板，而不是为我们的实验目的而建造的。为了发展我们的方法，需要特殊构造的具有高紫外光透过率的液晶面板。研究的另一个目的是开发一个从CT图像和超声诊断图像等二维医学图像数据重建人体器官三维(3D)模型的软件系统。我们已经开发了这样一个软件系统…利用X射线CT图像增强技术和密度梯度直方图分类方法，对皮下组织、软组织和骨组织进行分类。利用超声诊断图像对人体心脏模型进行了三维重建，在计算机上显示了良好的三维图像。利用开发的三维模型重建软件系统，采用紫外激光光刻技术建立了颅骨模型。假设本研究中提出的掩模方法在未来成为实用方法，我们增加了利用通信卫星和互联网进行光学光刻的医学图像数据传输作为研究课题之一，并构建了传输系统，进行了医学图像数据的传输。使用日本通信卫星JCSAT进行卫星通信，并传输3D CT图像，从而收集基础数据，实现系统与光学光刻系统和图像数据采集系统的连接。较少

According to the proposed method, experiments on hardening the UV (ultra-violet) hardening resin with UV light from a mercury lamp through a mask made of paper were conducted as preliminary experiments, resulting in hardening simple models. We tried an experiment using liquid-crystal panel instead of the mask to control the UV light. Since the UV light transmitted through the liquid-crystal panel was so weak, experiments were terminated without success. The reason of the failure was because we did experiment with commercially provided liquid-crystal panel which was not constructed for the purpose of our experiment. Specially constructed liquid-crystal panel with high transmission rate of UV light is necessary in developing our method. Another aim of the research is developing a software system of rebuilding 3D (three-dimensional) models of human organs from 2D (two-dimensional) medical image data such as CT images and ultrasonic diagnosing images. We have developed such a software syst … More em, where we can satisfactorily classify the subcutaneous tissue, soft tissue and bone using the technique of enhancement of X-ray CT images and classification method of density-gradient histogram. Rebuilding of 3D human heart model was also done with the ultrasonic diagnosing images, resulting in a good 3D images on computer display. Using the developed software system of rebuilding 3D models, a model of skull was constructed by an optical lithography method using UV laser beam. Suppose that the mask method proposed in this research becomes practical ones in future, we add transmission of medical image data for optical lithography using communications satellite and INTERNET as one of research subjects and a transmission system was constructed and transmissions of medical image data were conducted. The satellite communication was done using a Japanese communications satellite JCSAT and 3D CT images were transmitted, resulting in collecting basic data to achieve systems linked with optical lithography systems and image data acquisition systems. Less