Jeremy Stone - Academia.edu (original) (raw)

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Papers by Jeremy Stone

Echocardiography (Mount Kisco, N.Y.), Jan 9, 2017

Although left ventricular (LV) ejection fraction (EF) and global longitudinal strain (GLS) are re... more Although left ventricular (LV) ejection fraction (EF) and global longitudinal strain (GLS) are recommended by the current echocardiographic chamber quantification guidelines, these measurements are not performed routinely. Because EF measurements rely on manual tracing of LV boundaries, and are subject to inter-reader variability and experience dependence, we hypothesized that semiautomated GLS measurements using speckle tracking would be more reproducible and less experience-dependent. Images from 30 patients were analyzed to obtain biplane EF using manual tracing. GLS was measured in three long-axis views using EchoInsight software (Epsilon Imaging) that automatically detects LV endocardial boundary, which is edited manually as necessary and is then automatically tracked throughout the cardiac cycle. All measurements were performed by an expert echocardiographer and three first-year cardiology fellows. Semiautomated GLS analysis showed excellent correlation (r=.98) and small bias ...

Echocardiography (Mount Kisco, N.Y.), Jan 9, 2017

Although left ventricular (LV) ejection fraction (EF) and global longitudinal strain (GLS) are re... more Although left ventricular (LV) ejection fraction (EF) and global longitudinal strain (GLS) are recommended by the current echocardiographic chamber quantification guidelines, these measurements are not performed routinely. Because EF measurements rely on manual tracing of LV boundaries, and are subject to inter-reader variability and experience dependence, we hypothesized that semiautomated GLS measurements using speckle tracking would be more reproducible and less experience-dependent. Images from 30 patients were analyzed to obtain biplane EF using manual tracing. GLS was measured in three long-axis views using EchoInsight software (Epsilon Imaging) that automatically detects LV endocardial boundary, which is edited manually as necessary and is then automatically tracked throughout the cardiac cycle. All measurements were performed by an expert echocardiographer and three first-year cardiology fellows. Semiautomated GLS analysis showed excellent correlation (r=.98) and small bias ...

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