Evaluation of an artificial intelligence-based system for echocardiographic estimation of right atrial pressure

The International Journal of Cardiovascular Imaging
Ghada Zamzmi1, Li‐Yueh Hsu2, Sivaramakrishnan Rajaraman1, Wen Li3, Vandana Sachdev3, Sameer Antani1
1National Library of Medicine, National Institutes of Health, Bethesda, USA
2Clinical Center, National Institutes of Health, Bethesda, USA
3National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, USA

Tóm tắt

AbstractCurrent noninvasive estimation of right atrial pressure (RAP) by inferior vena cava (IVC) measurement during echocardiography may have significant inter-rater variability due to different levels of observers’ experience. Therefore, there is a need to develop new approaches to decrease the variability of IVC analysis and RAP estimation. This study aims to develop a fully automated artificial intelligence (AI)-based system for automated IVC analysis and RAP estimation. We presented a multi-stage AI system to identify the IVC view, select good quality images, delineate the IVC region and quantify its thickness, enabling temporal tracking of its diameter and collapsibility changes. The automated system was trained and tested on expert manual IVC and RAP reference measurements obtained from 255 patients during routine clinical workflow. The performance was evaluated using Pearson correlation and Bland-Altman analysis for IVC values, as well as macro accuracy and chi-square test for RAP values. Our results show an excellent agreement (r=0.96) between automatically computed versus manually measured IVC values, and Bland-Altman analysis showed a small bias of $$-$$ - 0.33 mm. Further, there is an excellent agreement ($$(p<0.01$$ ( p < 0.01 ) between automatically estimated versus manually derived RAP values with a macro accuracy of 0.85. The proposed AI-based system accurately quantified IVC diameter, collapsibility index, both are used for RAP estimation. This automated system could serve as a paradigm to perform IVC analysis in routine echocardiography and support various cardiac diagnostic applications.

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The International Journal of Cardiovascular Imaging

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