权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Distance collaboration system using moving images.

使用移动图像的远程协作系统。

基本信息

批准号：
12480261
负责人：
YAMAUCHI Kazunobu
金额：
$ 8.19万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12480261/
关键词：
Collaboration system ISDN64kbps Moving images Evaluation of Medical Images Transferring of Cineangiogram Transferring of Echocardiogram Teleconference ISDN64Kbps ISDN コラボレーション

项目摘要

This study reports on the collaboration system for moving images using personal computers and ISDN lines, and examines the image quality and usability of the system. Medical moving image data recorded on a personal computer (PC(MPU : Intel P3-933 MHz ; RAM : 768 MB ; HD : 18 GB×2)) were transmitted beforehand over the ISDN network, and were stored on the hard disk of the recipient PC. Echocardiographic video images and coronary cineangiogram were subjected to analog-to-digital conversion by the Dx Video-Acq, and sent over the network to the PC where they were saved. The DxMM performed synchronized smooth video image regeneration using the data on the hard disk of each PC, and bidirectional image regeneration, stop motion, and pointing display via an on-screen arrow were possible.Moving images were captured as digitized data on a PC after 40% compression at 30 frames/sec and AD conversion. The file size of a monochrome, 20 second image capture was 10.8 MB, and a similar 24-bit color image was 12.7 MB. Then, the data were transmitted to the other PC over the ISDN network. These images each required a transmission time of 13 to 14 min.The coronary cineangiogram was regenerated on the PC, and four investigators who were blinded to the patient information separately examined the coronary arterial stenosis. There was close agreement on an intermediate to high degree of stenosis. This level of image quality was adequate for diagnosis. The ability to replay alternate video images while a discussion was held on the video conferencing system made this tool useful in determining a course of treatment. When the images of the mitral valve stenosis and regurgetation patient were examined, matching readings were obtained.Collaboration is possible insofar as moving image data are transmitted to the consulting partner's PC beforehand, even when ISDN is used.

本研究报告使用个人电脑和ISDN线路的移动图像的协作系统，并检查该系统的图像质量和可用性。记录在个人计算机（PC（MPU：Intel P3-933 MHz ; RAM：768 MB ; HD：18 GB×2））上的医用运动图像数据预先通过ISDN网络发送，并存储在接收PC的硬盘上。超声心动图视频图像和冠状动脉电影血管造影片通过Dx Video-Acq进行模数转换，并通过网络发送到PC，保存在PC上。DxMM使用各PC的硬盘数据进行同步的平滑的视频图像再生，可以进行双向图像再生、停止运动、通过屏幕箭头进行指示显示。在PC上以30帧/秒压缩40%并进行AD转换后，将动态图像作为数字化数据拍摄。单色20秒图像捕获的文件大小为10.8 MB，类似的24位彩色图像为12.7 MB。然后，数据通过ISDN网络传输到另一台PC。这些图像每个都需要13至14分钟的传输时间。冠状动脉血管造影电影在PC上再生，四名对患者信息不知情的研究者分别检查冠状动脉狭窄。在中度至高度狭窄方面达成了密切一致。这种水平的图像质量足以诊断。当在视频会议系统上进行讨论时，能够回放备用视频图像，这使得该工具在确定治疗过程中非常有用。在检查二尖瓣狭窄和再流患者的图像时，获得了匹配的读数。即使使用ISDN，只要预先将活动图像数据传输到咨询伙伴的PC，就可以进行协作。