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Phase Coherence Imaging (PCI)

Phase Coherence Imaging (PCI) is an advanced post-processing technique used to enhance image clarity by analyzing the consistency of phase information across the signals of an FMC acquisition. This means that PCI depends on the nature of the reflectors: Omnidirectional sources such as volumetric defects, slag, tip diffraction…that send energy in all directions have a higher chance to be detected on all elements of the array and thus contribute in phase. Reflectors with a strong directional phase dependence such as interface or delaminations have fewer elements that contribute in phase

Sources

  1. J. Camacho, M. Parrilla, C. Fritsch, “Phase Coherence Imaging”, IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 56, 5, pp. 958-974, 2009