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Comparative Study
. 2004 Mar;17(3):227-30.
doi: 10.1016/j.echo.2003.12.006.

The effect of bandwidth on the quality of transmitted pediatric echocardiograms

John P Finley  1 , Robert Justo, Maria Loane, Richard Wootton
Affiliations
Comparative Study

The effect of bandwidth on the quality of transmitted pediatric echocardiograms

John P Finley et al. J Am Soc Echocardiogr. 2004 Mar.

Abstract

Background: Remote access to pediatric cardiology diagnostic services is enabled by real-time transmission of echocardiographic images. Several transmission bandwidths have been used but there has been little analysis of image quality provided by different bandwidths. We designed a study of the quality of transmitted images at various bandwidths.

Methods: Two echocardiographers viewed randomly a series of 13 recorded pediatric echocardiographic images either directly or after transmission using 1 of 4 bandwidths: 256; 384; 512; or 768 kbps. An image clarity scoring scale was used to assess image quality of cardiac structures.

Results: Measurable differences were found in image quality with different transmission bandwidths; 512 kbps was the minimum for consistently clear imaging of all cardiac structures examined.

Conclusion: Bandwidth greater than 512 kbps confers sharper images subjectively although this could not be quantified by our methods.

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