Yamamoto L G
Department of Pediatrics, John A. Burns School of Medicine, University of Hawaii, Honolulu.
Am J Emerg Med. 1995 Jan;13(1):55-7. doi: 10.1016/0735-6757(95)90244-9.
Economical applications of teleradiology and telemedicine are limited to the existing telephone network infrastructure, which greatly limits the speed of digital information transfer. Telephone lines are inherently slow, requiring image transmission times to be unacceptably long for large, complex, or numerous images. JPEG (Joint Photographic Experts Group) image transmission has been shown to compress images to 10% of the original file size without a noticeable change in the quality of the image. This study was carried out to assess the quality of medical diagnostic images after JPEG compression and decompression. X-rays, computed tomography scans, and ultrasound samples were compressed and decompressed using JPEG. The compressed JPEG images were indistinguishable from the original images. The JPEG images were approximately 10% of the original file size. This would reduce image transmission times by 90% (eg, an unacceptable time of 50 minutes would be reduced to an acceptable time of 5 minutes). JPEG can be used to optimize teleradiology and telemedicine.
远程放射学和远程医疗的经济应用局限于现有的电话网络基础设施，这极大地限制了数字信息的传输速度。电话线本身速度就慢，对于大型、复杂或数量众多的图像，其图像传输时间长得令人无法接受。联合图像专家小组（JPEG）图像传输已被证明可将图像压缩至原始文件大小的10%，而图像质量无明显变化。本研究旨在评估JPEG压缩和解压缩后医学诊断图像的质量。使用JPEG对X射线、计算机断层扫描和超声样本进行压缩和解压缩。压缩后的JPEG图像与原始图像难以区分。JPEG图像约为原始文件大小的10%。这将使图像传输时间减少90%（例如，不可接受的50分钟将减少到可接受的5分钟）。JPEG可用于优化远程放射学和远程医疗。
