title: Objective video quality measure for application to tele-echocardiography.
abstract: Real-time tele-echocardiography is widely used to remotely diagnose or exclude congenital heart defects. Cost effective technical implementation is realised using low-bandwidth transmission systems and lossy compression (videoconferencing) schemes. In our study, DICOM video sequences were converted to common multimedia formats, which were then, compressed using three lossy compression algorithms. We then applied a digital (multimedia) video quality metric (VQM) to determine objectively a value for degradation due to compression. Three levels of compression were simulated by varying system bandwidth and compared to a subjective assessment of video clip quality by three paediatric cardiologists with more than 5 years of experience.
authors.affiliation: Clinical Engineering, Our Lady's Childrens Hospital, Crumlin, Dublin, Ireland. pmooreiii@yahoo.com
authors.forename: Peter Thomas
authors.initials: PT
authors.lastname: Moore
authors.forename: Neil
authors.initials: N
authors.lastname: O'Hare
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Walsh
authors.forename: Neil
authors.initials: N
authors.lastname: Ward
authors.forename: Niamh
authors.initials: N
authors.lastname: Conlon
mesh_terms: D000465:Algorithms; D002648:Child; D044962:Data Compression; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D012815:Signal Processing, Computer-Assisted; D019112:Teleradiology / Q000379:methods* / Q000592:standards; D014463:Ultrasonography; D014741:Video Recording / Q000379:methods* / Q000592:standards