Speckle2Speckle: Unsupervised Learning of Ultrasound Speckle Filtering
Without Clean Data
- URL: http://arxiv.org/abs/2208.00402v1
- Date: Sun, 31 Jul 2022 09:17:32 GMT
- Title: Speckle2Speckle: Unsupervised Learning of Ultrasound Speckle Filtering
Without Clean Data
- Authors: R\"udiger G\"obl, Christoph Hennersperger, Nassir Navab
- Abstract summary: In ultrasound imaging the appearance of homogeneous regions of tissue is subject to speckle.
Most conventional filtering techniques are fairly hand-crafted and often need to be finely tuned to the present hardware, imaging scheme and application.
We propose a deep-learning based method for speckle removal without these limitations.
- Score: 48.81200490360736
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In ultrasound imaging the appearance of homogeneous regions of tissue is
subject to speckle, which for certain applications can make the detection of
tissue irregularities difficult. To cope with this, it is common practice to
apply speckle reduction filters to the images. Most conventional filtering
techniques are fairly hand-crafted and often need to be finely tuned to the
present hardware, imaging scheme and application. Learning based techniques on
the other hand suffer from the need for a target image for training (in case of
fully supervised techniques) or require narrow, complex physics-based models of
the speckle appearance that might not apply in all cases. With this work we
propose a deep-learning based method for speckle removal without these
limitations. To enable this, we make use of realistic ultrasound simulation
techniques that allow for instantiation of several independent speckle
realizations that represent the exact same tissue, thus allowing for the
application of image reconstruction techniques that work with pairs of
differently corrupted data. Compared to two other state-of-the-art approaches
(non-local means and the Optimized Bayesian non-local means filter) our method
performs favorably in qualitative comparisons and quantitative evaluation,
despite being trained on simulations alone, and is several orders of magnitude
faster.
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