Multi-class motion-based semantic segmentation for ureteroscopy and
laser lithotripsy
- URL: http://arxiv.org/abs/2104.01268v1
- Date: Fri, 2 Apr 2021 22:47:21 GMT
- Title: Multi-class motion-based semantic segmentation for ureteroscopy and
laser lithotripsy
- Authors: Soumya Gupta, Sharib Ali, Louise Goldsmith, Ben Turney and Jens
Rittscher
- Abstract summary: We propose an end-to-end CNN-based framework for the segmentation of stones and laser fiber.
We show that our proposed model generalizes better on a new clinical dataset showing a mean improvement of 25.4%, 20%, and 11% over UNet, HybResUNet, and DeepLabv3+, respectively.
- Score: 0.7874708385247353
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Kidney stones represent a considerable burden for public health-care systems.
Ureteroscopy with laser lithotripsy has evolved as the most commonly used
technique for the treatment of kidney stones. Automated segmentation of kidney
stones and laser fiber is an important initial step to performing any automated
quantitative analysis of the stones, particularly stone-size estimation, that
helps the surgeon decide if the stone requires more fragmentation. Factors such
as turbid fluid inside the cavity, specularities, motion blur due to kidney
movements and camera motion, bleeding, and stone debris impact the quality of
vision within the kidney and lead to extended operative times. To the best of
our knowledge, this is the first attempt made towards multi-class segmentation
in ureteroscopy and laser lithotripsy data. We propose an end-to-end CNN-based
framework for the segmentation of stones and laser fiber. The proposed approach
utilizes two sub-networks: HybResUNet, a version of residual U-Net, that uses
residual connections in the encoder path of U-Net and a DVFNet that generates
DVF predictions which are then used to prune the prediction maps. We also
present ablation studies that combine dilated convolutions, recurrent and
residual connections, ASPP and attention gate. We propose a compound loss
function that improves our segmentation performance. We have also provided an
ablation study to determine the optimal data augmentation strategy. Our
qualitative and quantitative results illustrate that our proposed method
outperforms SOTA methods such as UNet and DeepLabv3+ showing an improvement of
5.2% and 15.93%, respectively, for the combined mean of DSC and JI in our
invivo test dataset. We also show that our proposed model generalizes better on
a new clinical dataset showing a mean improvement of 25.4%, 20%, and 11% over
UNet, HybResUNet, and DeepLabv3+, respectively, for the same metric.
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