teleradiology with personal computers and ISDN

使用个人计算机和 ISDN 进行远程放射学

• 批准号: 12670884
• 负责人: KATO Akira
• 金额: $ 1.47万
• 依托单位: Saga Medical School
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12670884/
• 关键词: teleradiology; public telephone circuit; ISDN

Method:We connected between the personal computer at our institute and the cooperator's computer with ISDN (high speed public telephone circuit in Japan). First year, we estimated the possibility of teleradiology with low compressed imaging data. MRI imaging data of 30 cases were obtained at cooperator's institute. The data were compressed in 75 % and stored in the cooperator's personal computer. We got the data via ISDN, measured the transmission time and examined the diagnostic accuracy at reading of the images. As a result of this study, transmission time was too long, so we tried high compressed imaging data next year. We used the DICOM imaging data of our institute. These data were translate to JPEG images and compressed in 30 %. Then we measured the transmission time of MR imaging data of 15 cases (head and spine), which were sent to cooperator's computer, and examined the diagnostic accuracy of such high compressed imaging data.Result:With low compression rate, mean transmission time per one case was 30 minutes and 22 seconds. In this study, all lesions were detected in the reading of the images. On the other hand, with high compression rate, transmission time per one case was 7 minutes and 15 seconds. Tiny lesions might be missed in the reading of the images, however there were no clinical problems.Discussion:Our study clarified the practical use of ISDN and personal computers in teleradiology. But now , we can use faster circuit such as ADSL for teleradiology. We would like to continue to exam the efficacy of teleradiology with faster public circuit than ISDN.

方法：我们与ISDN（日本的高速公共电话电路）之间的个人计算机与合作社的计算机连接。第一年，我们通过低压缩成像数据估算了远期放射学的可能性。在合作社研究所获得了30例30例病例的MRI成像数据。数据以75％压缩，并存储在合作者的个人计算机中。我们通过ISDN获得了数据，测量了传输时间，并检查了读取图像时的诊断准确性。这项研究的结果是，传输时间太长了，因此我们明年尝试了高压缩成像数据。我们使用了研究所的DICOM成像数据。这些数据被转化为JPEG图像，并以30％的形式压缩。然后，我们测量了发送到合作者计算机的15例（头和脊柱）的MR成像数据的传输时间，并检查了此类高压缩成像数据的诊断准确性。回升：以低压缩率，平均传输时间为单位。案例是30分钟22秒。在这项研究中，在读取图像时都检测到所有病变。另一方面，每种情况的传输时间高7分15秒。在阅读图像时可能会遗漏细小的病变，但是没有临床问题。讨论：我们的研究阐明了ISDN和个人计算机在远程放射学中的实际使用。但是现在，我们可以使用更快的电路（例如ADSL）进行远程放射学。我们希望继续使用比ISDN更快的公共巡回赛远期放射学的功效。