Real-time transmission of full-motion echocardiography over a high-speed data network: Impact of data rate and network quality of service

Michael L. Main, David Foltz, Michael S. Firstenberg, Eric Bobinsky, Debra Bailey, Brian Frantz, David Pleva, Michael Baldizzi, David P. Meyers, Kevin Jones, Matt Chew Spence, Ken Freeman, Annitta Morehead, James D. Thomas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

With high-resolution network transmission required for telemedicine, education, and guided-image acquisition, the impact of errors and transmission rates on image quality needs evaluation. Methods: We transmitted clinical echocardiograms from 2 National Aeronautics and Space Administration (NASA) research centers with the use of Motion Picture Expert Group-2 (MPEG-2) encoding and asynchronous transmission mode (ATM) network protocol over the NASA Research and Education Network. Data rates and network quality (cell losses [CLR], errors [CER], and delay variability [CVD]) were altered and image quality was judged. Results: At speeds of 3 to 5 megabits per second (Mbps), digital images were superior to those on videotape; at 2 Mbps, images were equivalent. Increasing CLR caused occasional, brief pauses. Extreme CER and CDV increases still yielded high-quality images. Conclusions: Real-time echocardiographic acquisition, guidance, and transmission is feasible with the use of MPEG-2 and ATM with broadcast quality seen above 3 Mbps, even with severe network quality degradation. These techniques can be applied to telemedicine and used for planned echocardiography aboard the International Space Station.

Original languageEnglish (US)
Pages (from-to)764-770
Number of pages7
JournalJournal of the American Society of Echocardiography
Volume13
Issue number8
DOIs
StatePublished - Jan 1 2000

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'Real-time transmission of full-motion echocardiography over a high-speed data network: Impact of data rate and network quality of service'. Together they form a unique fingerprint.

Cite this