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# Multidimensional Texture Analysis for Improved Prediction of Ultrasound Liver Tumor Response to Chemotherapy Treatment

## O.S. Al-Kadi, D. Van De Ville, A. Depeursinge

### Proceedings of the Nineteenth International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI'16), Aθήνα (Athens), Ελληνική Δημοκρατία (Hellenic Republic), October 17-21, 2016, [Lecture Notes in Computer Science, vol. 9900, Springer, 2016], pp. 619-626.

The number density of scatterers in tumor tissue contribute to a heterogeneous ultrasound speckle pattern that can be difficult to discern by visual observation. Such tumor stochastic behavior becomes even more challenging if the tumor texture heterogeneity itself is investigated for changes related to response to chemotherapy treatment. Here we define a new tumor texture heterogeneity model for evaluating response to treatment. The characterization of the speckle patterns is performed via state-of-the-art multi-orientation and multi-scale circular harmonic wavelet (CHW) frames analysis of the envelope of the radio-frequency signal. The lacunarity measure—corresponding to scatterer number density—is then derived from fractal dimension texture maps within the CHW decomposition, leading to a localized quantitative assessment of tumor texture heterogeneity. Results indicate that evaluating tumor heterogeneity in a multidimensional texture analysis approach could potentially impact on designing an early and effective chemotherapy treatment.

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AUTHOR="Al-Kadi, O.S. and Van De Ville, D. and Depeursinge, A.",
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