In these patients with poor ultrasound image quality, C3DE, regardless of instrument settings, outperformed 2DE and 3DE to assess LV volumes and ejection fraction and can thus be proposed as an acceptable alternative when MRI cannot be performed in this subgroup.
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O uso do 3D com contraste em janelas inadequadas fica para casos que não podem realizar a RM.
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http://www.onlinejase.com/article/S0894-7317(14)00456-8/fulltext
Current conventional techniques for speckle tracking have significant limitations that have impeded their widespread adaptation. Currently, several ultrasound system vendors have developed their own speckle tracking software techniques to measure strain and strain rate. In the majority of cases, however, the software can only be used with images obtained from their own hardware platform. Furthermore, strain and strain rate values obtained from one hardware/software platform are often different from those obtained on the same patient using a different hardware/software system.
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http://onlinelibrary.wiley.com/doi/10.1111/echo.12512/full
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This study demonstrates that the newly developed USS can be used to accurately assess left ventricular systolic and diastolic function using speckle tracking echocardiography. This new technique has several advantages. Like a universal remote that can be used with multiple different electronic components from different manufacturers, the USS can be applied to any DICOM echocardiographic image regardless of the ultrasound system it was obtained on.
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Finalmente um programa de análise de Strain que pode unificar os resultados e gerar uma tabela de normalidade aceitável.