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Switchable Deep Beamformer

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Document pages: 10 pages

Abstract: Recent proposals of deep beamformers using deep neural networks haveattracted significant attention as computational efficient alternatives toadaptive and compressive beamformers. Moreover, deep beamformers are versatilein that image post-processing algorithms can be combined with the beamforming.Unfortunately, in the current technology, a separate beamformer should betrained and stored for each application, demanding significant scannerresources. To address this problem, here we propose a { em switchable} deepbeamformer that can produce various types of output such as DAS, speckleremoval, deconvolution, etc., using a single network with a simple switch. Inparticular, the switch is implemented through Adaptive Instance Normalization(AdaIN) layers, so that various output can be generated by merely changing theAdaIN code. Experimental results using B-mode focused ultrasound confirm theflexibility and efficacy of the proposed methods for various applications.

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