Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pixel-reassignment in Ultrasound Imaging   We present an adaptation of the pixel-reassignment technique from confocal
fluorescent microscopy to coherent ultrasound imaging. The method, Ultrasound
Pixel-Reassignment (UPR), provides a resolution and signal to noise (SNR)
improvement in ultrasound imaging by computationally reassigning off-focus
signals acquired using traditional plane-wave compounding ultrasonography. We
theoretically analyze the analogy between the optical and ultrasound
implementations of pixel reassignment, and experimentally evaluate the imaging
quality on tissue-mimicking acoustic phantoms. We demonstrate that UPR provides
a $25\%$ resolution improvement and a $3dB$ SNR improvement in in-vitro scans,
without any change in hardware or acquisition scheme.

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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph