Efficacy of teleradiology and telepathology in dentistry

远程放射学和远程病理学在牙科中的功效

• 批准号: 11671878
• 负责人: OKANO Tomohiro
• 金额: $ 2.05万
• 依托单位: Showa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11671878/
• 关键词: Telemedicine; teleradiology; telepathology; ISDN; videophone-conference; JPEC compression; ISDN; TV電話; 画像伝送; Teleradiology; Telemedicine; Telepathology; Teledentistry

The efficacy of the teleconference between radiology and pathology departments in dental field was evaluated in examining the time required to send images, the diagnostic quality of the images, and the handling of the systems. The management of the NTT-based videophone-conference system was also examined. The results were as follows : 1) The quality of the transmitted CT, MRI and plain radiologic images in JPEG 20 : 1 lossy compression would be accepted in routine diagnostic tasks. The 14 pathologic images examined were also accepted in quality in lossless compression. 2) The radiologic image data ranging from 3,000 to 10,000MB were, on average, required 2 min in 20 : 1 lossy and 30 min in lossless compression. More time was required of the pathologic image data. As a result, the real-time teleconference would not be realistic in such circumstances. On the other hand, 3) the videophone-teleconference system was evaluated to be promising because the images could be sent and observed immediately each other. It helped to discuss the case on both sides. 4) the quality of the pathologic images was, however, far inferior to the original, especially in low-and middle-magnification. All of the radiologic images were accepted even in this system. 5) Since the lower quality of the transmitted images was somewhat compensated with the discussion of both sides, the proposed videophone-teleconference system would be accepted in the real situation. 6) Although the usage of the ISDN64 is advantageous because it is available through all over Japan, the infrastructure of the transmission technology would be required in to develope more-efficient teleconference system using radiologic and pathologic diagnostic images.

在检查发送图像所需的时间、图像的诊断质量和系统的处理方面，评价了牙科领域放射科和病理科之间的电话会议的有效性。还审查了基于NTT的可视电话会议系统的管理。结果表明：1）JPEG 20：1有损压缩后的CT、MRI和X线平片传输图像的质量在常规诊断任务中是可以接受的。对14幅病理图像进行无损压缩后，图像质量也达到了要求。2)从3，000到10，000 MB的放射学图像数据在20：1有损压缩中平均需要2 min，在无损压缩中平均需要30 min。病理图像资料需要较长时间。因此，在这种情况下，实时电话会议是不现实的。另一方面，3）视频电话-电话会议系统被评价为有前途的，因为图像可以立即发送和观察对方。这有助于双方讨论此案。4)然而，病理图像的质量远低于原始图像，尤其是在低倍和中倍放大率下。即使在该系统中，也可以接受所有的放射学图像。5)由于双方的讨论在某种程度上弥补了传输图像质量较低的问题，拟议的可视电话-电话会议系统在真实的情况下将被接受。6)虽然ISDN 64的使用是有利的，因为它可以在整个日本，传输技术的基础设施将需要在开发更有效的电话会议系统使用放射和病理诊断图像。