AI Article Synopsis
- The study investigates how different transmission bandwidths affect the quality of pediatric echocardiographic images used in remote access cardiology.
- Researchers had two echocardiographers rate the clarity of images transmitted at four different bandwidths: 256, 384, 512, and 768 kbps.
- Results showed that a bandwidth of at least 512 kbps was necessary for consistently clear images of heart structures, and higher bandwidths generally improved image sharpness, even if not quantifiably measured.
Article 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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| http://dx.doi.org/10.1016/j.echo.2003.12.006 | DOI Listing |
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