Performance of Optical Flow tracking approaches for cardiac motion analysis

Q: What is the clinical evidence from this study?

Study design: Other. Population: Cardiac motion analysis. Intervention: Optical Flow (OF) motion tracking techniques vs. Harmonic Phase (HARP) analysis technique. Primary outcome: Tracking accuracy.

Key Result

Optical Flow motion tracking techniques showed variable accuracy with overestimation at end-systole, but performed better than Harmonic Phase analysis at the heart borders in simulated cardiac motion.

Structured PICO

How do Optical Flow motion tracking techniques compare to Harmonic Phase analysis for cardiac motion analysis in a simulated model?

Population

Mathematical model simulating real cardiac motion during myocardial tagging (SPAMM and CSPAMM tag patterns)

Intervention

Optical Flow (OF) motion tracking techniques

Comparator

Harmonic Phase (HARP) analysis technique

Outcome

Tracking accuracy and performancesurrogate

Optical Flow tracking techniques show variable accuracy but outperform HARP analysis at heart borders in simulated cardiac motion models.

Abstract

Tagging Magnetic Resonance Imaging (MRI) sequence is used for evaluating Left Ventricular contractility. In this technique, a pattern of spatially varying magnetism is applied at the end diastole. Analyzing the deformation of tag pattern during the cardiac cycle has wide applications for cardiac deformation analysis. Noninvasive myocardial tagging in MRI has shown great potential in measuring and studying the motion of the heart. This paper presents a mathematical model that simulates the real cardiac motion during myocardial tagging. We synthesized both the Spatial Modulation of Magnetization (SPAMM) and complementary Spatial Modulation of Magnetization (CSPAMM) tag patterns with arbitrary spatial frequency. Using this model, we tested the performance and limitations of different Optical Flow (OF) motion tracking techniques and compared them with the performance of Harmonic Phase (HARP) analysis technique. The results exhibit that the OF tracking accuracy differs from point to another with a noticeable over estimation at the end of systole. Also OF is performing better than HARP at the heart borders.

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Cite This Study

Hassanein et al. (Sat,) conducted a other in Cardiac motion analysis. Optical Flow (OF) motion tracking techniques vs. Harmonic Phase (HARP) analysis technique was evaluated on Tracking accuracy. Optical Flow motion tracking techniques showed variable accuracy with overestimation at end-systole, but performed better than Harmonic Phase analysis at the heart borders in simulated cardiac motion.

synapsesocial.com/papers/6a0ec07837aeb0126447a76c https://doi.org/https://doi.org/10.1109/mecbme.2014.6783226

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