419 Revisiting cardiac Doppler index with single heart beat 4D ultrafast echocardiography
| Autor: | Clement Papadacci, Victor Finel, Guillaume Goudot, Emmanuel Messas, Mickael Tanter, Jean Provost, Mathieu Pernot, O Villemain |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Cardiac output Ejection fraction medicine.diagnostic_test business.industry Two dimensional echocardiography Cardiac index Atrial fibrillation General Medicine Doppler echocardiography medicine.disease symbols.namesake Internal medicine cardiovascular system symbols Heart beat medicine Cardiology Radiology Nuclear Medicine and imaging Cardiology and Cardiovascular Medicine business Doppler effect |
| Zdroj: | European Heart Journal - Cardiovascular Imaging. 21 |
| ISSN: | 2047-2412 2047-2404 |
| DOI: | 10.1093/ehjci/jez319.233 |
| Popis: | Funding Acknowledgements European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement n° 311025 and the ANR-10-IDEX-00 Background 4D echocardiography has the strong potential to improve cardiac index quantification by providing reproducible and user independent measurements. Quantification of left ventricle volume and ejection fraction, for instance, have been shown to be more reliable using 4D echocardiography. However, Doppler index evaluation has not yet benefited from it, due to limited volume rates and single location estimation when assessing spectral Doppler. Purpose In this study, we propose to demonstrate the feasibility of performing semi-automatic evaluation of cardiac Doppler indices within a single heartbeat on three human hearts by performing 4D ultrafast echocardiography, a new technique allowing a drastic volume rate increase. Methods A 4D ultrafast echocardiography scanner prototype connected to a matrix probe was developed to image the human heart. The probe was positioned on the apical 4-chamber view of N = 3 volunteers. High volume rate (5200 volume/s) acquisitions were performed three times by two different trained cardiologists. 4D color flow and tissue Doppler imaging were computed from the each single heartbeat acquisition. Spectral Doppler were derived at each voxel of the volumes. Region of interest such as LV outflow tract, mitral inflow or basal inferoseptal locations were automatically detected. Doppler index were derived from Doppler spectra and tissue velocity curves at these locations, and were compared against indices obtained using a clinical procedure based on 2D echocardiography. Results For each acquisition and the three volunteers, major Doppler indices: E, A, E/A, S, e’, a’, e’/a’, s’, E/e’, cardiac output were successfully assessed during a single heartbeat. A high degree of similarity between the indices assessed by 4D ultrafast echocardiography and clinical 2D measurements were found.(p > 0.05 for each index). Conclusions 4D ultrafast echocardiography can quantify the major cardiac Doppler indices in a single heart beat acquisition. It promises to improve patient care by accelerating examination time and to improve results reproducibility by removing most of the operator dependency. It also offers a unique feature by enabling E/e’ index assessment in the same heart beat which could be of a great interest for atrial fibrillation patients. Abstract 419 Figure. |
| Databáze: | OpenAIRE |
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