Flexible array curvature and sound speed estimations with a maximum spatial lag-one coherence metric
Jiaxin Zhang,
Kai Ding,
Muyinatu A. Lediju Bell
Abstract:Flexible transducer arrays have the potential to conform to various organ shapes and sizes during photoacoustic image-guided interventions. However, incorrect sound speeds and array shapes can interfere with photoacoustic target localization and degrade image quality. We propose a metric to estimate the sound speed surrounding a target and the radii of curvature of flexible arrays with approximately concave shapes. The metric is defined as the maximum lag-one spatial coherence of the time-delayed, zero-mean ch… Show more
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