122 3D Speckle tracking for characterizing transmurality of myocardial necrosis - 07/07/11
Résumé |
Background |
The aim of the study was to compare the accuracy of 3D strain for characterizing myocardial transmurality necrosis.
Methods |
The study included 17 patients (12 males, 64±14 years) with ischemic left ventricular dysfunction (38±9%). Longitudinal, circumferential, and radial strain by 3D speckle tracking, 3D area strain were computed from baseline 3D echocardiography data and compared to transmural necrosis by MRI.
Results |
On the whole, 232 segments (85%, 232/272) were analyzable by 3D and MRI. Decrease in radial strain occurred lately when transmural necrosis was >75% (9±9% vs.18±14%, p<0.001). In contrast, longitudinal strain decreased early when transmural necrosis was >25% (−9±6% vs. – 6±5%, p=0.001) and remained stable thereafter without significant difference between 25% and 75%. Interestingly, circumferential and 3D area strain were able to differentiate all stages of necrosis <25%, 25–75% and >75% (See Figure).
Conclusion |
3D strain values by speckle tracking analysis are consistent with the anatomical fibers distribution and correlates with the transmurality of myocardial necrosis assessed by MRI. Circumferential and 3D area strain provides a continuous assessment of transmural necrosis.
Vol 3 - N° 1
P. 40 - janvier 2011 Retour au numéro
Article précédent
- 121 Assessment of contractile reserve using strain delay index by speckle tracking to identify myocardial viability
- Julien Nahum, Pierre Francois Lesault, Gauthier Mouillet, Martin Kloekner, Pascal Gueret, Jean Luc Dubois-Rande, Pascal Lim
- 123 Right ventricular involvement in Tako-Tsubo cardiomyopathy detected by 2D speckle tracking echocardiography
- Nicolas Mansencal, Nacéra Abbou, Rami El Mahmoud, Rémy Pillière, Olivier Dubourg
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