A CT denoising neural network with image properties parameterization and control

Wenying Wang; Grace J. Gang; J. Webster Stayman IV

doi:10.1117/12.2582145

15 February 2021 A CT denoising neural network with image properties parameterization and control

Wenying Wang, Grace J. Gang, J. Webster Stayman IV

Proceedings Volume 11595, Medical Imaging 2021: Physics of Medical Imaging; 115950K (2021) https://doi.org/10.1117/12.2582145
Event: SPIE Medical Imaging, 2021, Online Only

Abstract

A wide range of dose reduction strategies for x-ray computed tomography (CT) have been investigated. Recently, denoising strategies based on machine learning have been widely applied, often with impressive results, and breaking free from traditional noise-resolution trade-offs. However, since typical machine learning strategies provide a single denoised image volume, there is no user-tunable control of a particular trade-off between noise reduction and image properties (biases) of the denoised image. This is in contrast to traditional filtering and model-based processing that permits tuning of parameters for a level of noise control appropriate for the specific diagnostic task. In this work, we propose a novel neural network that includes a spatial-resolution parameter as additional input permits explicit control of the noise-bias trade-off. Preliminary results show the ability to control image properties through such parameterization as well as the possibility to tune such parameters for increased detectability in task-based evaluation.

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Citation Download Citation

Wenying Wang, Grace J. Gang, and J. Webster Stayman IV "A CT denoising neural network with image properties parameterization and control", Proc. SPIE 11595, Medical Imaging 2021: Physics of Medical Imaging, 115950K (15 February 2021); https://doi.org/10.1117/12.2582145

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