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Weighted Mean Frequencies: a handcraft Fourier feature for 4D Flow MRI segmentation

Created by
  • Haebom

Author

Simon Perrin, Sebastian Levilly, Huajun Sun, Harold Mouchere , Jean-Michel Serfaty

Outline

In this paper, we propose a new feature, Weighted Mean Frequencies (WMF), to address the difficulty of vessel segmentation due to low resolution and noise in 4D Flow MRI images. WMF represents the outline of pulsatile velocity pixels by visualizing the 3D region where the pulsatile flow has passed. Through two experiments (4D Flow MRI image segmentation using optimal thresholding and deep learning methods), we compare WMF with the conventional PC-MRA feature and show that the IoU and Dice coefficients increase by 0.12 and 0.13, respectively. This suggests that it has the potential to be applied to segmentation of other vascular regions, such as the heart and brain.

Takeaways, Limitations

Takeaways:
We present a novel feature quantity WMF to improve the accuracy of 4D Flow MRI image segmentation.
Significantly improved IoU and Dice coefficients in deep learning-based vascular segmentation.
It also suggests applicability to segmentation of other vascular regions, such as the heart and brain.
Limitations:
The performance evaluation of the proposed WMF feature is based on a limited dataset and experimental settings. More diverse datasets and experiments are needed to verify the generalization performance.
There is a lack of analysis on the computational complexity and efficiency of WMF features.
Although applicability to other vascular areas has been suggested, actual application results have not been presented.
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