Improvement of a HTML-based teaching file for image diagnosis

为丰富和有效开展影像诊断教学，构建了基于HTML语言的教学档案。本研究从以下几个方面对教学档案系统进行了改进。安装一台中间PC。为了提高对网络攻击的安全性，在教学文件服务器和医学图像服务器之间安装了中间PC。图像服务器中的医学图像通过DICOM查询/检索协议通过在线方式导入中间PC。这些图像可以通过ID、患者姓名、研究日期、成像方式等关键字进行搜索。获取图像后，去除附加的患者信息并将其转换为TIFF或JPEG格式，然后导出为患者的信息。对LCD显示器的评估。教学文件中使用的一些8位灰度图像在笔记本电脑的某些LCD显示器上显示时质量不佳。我们评估了几种公益性LCD的质量，苹果和三星的产品质量足以满足这些图像的要求。对扫描图像质量的考虑。为了使该教学文件更有价值，需要提高压缩图像的质量，因此，对原始扫描的改进是考虑的。将电影文件引入到教学文件中。评价了超声电影图像文件的质量。当DV摄像机通过S视频电缆连接到超声机上，并以MPEG2格式输出到PC机时，质量最好。然而，由于文件太大而无法通过在线浏览，因此正在考虑应用MPEG1格式和/或Sorenson压缩。

An HTML-based teaching file had been constructed to enrich and make efficient the education for image diagnosis. In this research, the teaching file system was improved in the following way.1. Installation of an intermediate PC. To inprove the security from the attack via internet., intermediate PC was installed between the teaching- file server and the medical image server. Medical images in the image server were imported into intermediate PC via online by DICOM query/retrieve protocols. These images could be searched by keywords, such as ID, patient name, study date, imaging modalities. Once the images had been obtained, attached patients' information was eliminated and converted into TIFF or JPEG format, then exported to the information of the patients.2. Evaluation of the LCD monitors. Some 8-bit grayscale images which were used in the teaching file proposed insufficient quality when displayed in some LCD monitor of the notebook PCs. We evaluated the quality of several public welfare LCD, Apple^<TM> and Samsung^<TM> products presented enough quality for these images.4. Consideration of the scanning image quality. To make this teaching file more valuable, improvement of compressed image quality is needed, Therefore, inprovement of original scanned is under consideration.3. Introduction of a movie file into teaching file. Quality of ultrasound movie image files were evaluated. The best quality was obtained when the DV camera was connected to the ultrasound machine with s-video cable, and exported to PC with MPEG-2 format. However, as the file size was too huge to browse by online, application of MPEG-1 format and/or Sorenson compression is under consideration.