How should tissue Doppler tracings be measured?
Design
Editorial
Authors
Discussion
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Implication
This editorial highlights that measuring the mid-line (modal velocity) of tissue Doppler tracings is more accurate than the commonly used outer edge, while calling attention to significant machine-related biases.
Key Points
- This research investigates the most accurate method for measuring tissue Doppler velocities to enhance myocardial function assessment accuracy.
- Analyzed three measurement techniques: outer edge, middle line, and inner edge of Doppler tracings.
- Conducted in vitro comparisons against a gold standard and patient comparisons with M-mode and speckle tracking velocities.
- Evaluated measurements of different ultrasound machines to identify machine-related biases.
- Middle line measurements best corresponded with gold standard velocities in vitro and with M-mode and speckle tracking in patients.
- Outer edge measurements were less accurate than middle line measurements, though more reproducible.
- Machine-related biases were significant, requiring further investigation to optimize Doppler measurements.
Cite This Study
Flachskampf et al. (2014) studied this question.