Keywords: UNet Multi-scalce Supervision, 7 Tesla MRA, TOF-MRA, Imperfect ground-truth
TL;DR: UNet multi-scale supervision with deformation consistency in a semi-supervised manner improves small vessel segmentation from 7T TOF-MRA
Abstract: The advancement of 7 Tesla MRI systems enabled the depiction of very small vessels in the brain. Segmentation and quantification of the small vessels in the brain is a critical step in the study of Cerebral Small Vessel Disease, which is a challenging task. This paper proposes a deep learning based on U-Net Multi-Scale Supervision architecture to automatically segment small vessels in 7 Tesla 3D Time-of-Flight (TOF) Magnetic Resonance Angiography (MRA) data trained on a small imperfect semi-automatically segmented dataset and was made equivariant to elastic deformations in a self-supervised manner using deformation-aware learning to improve the generalisation performance. The proposed method achieved a dice score of 80.44$\pm$0.83 while being compared against the semi-automatically created labels and 62.07 while comparing against manually segmented region.
Paper Type: both
Primary Subject Area: Segmentation
Secondary Subject Area: Learning with Noisy Labels and Limited Data
Paper Status: based on accepted/submitted journal paper
Source Code Url: https://github.com/soumickmj/DS6
Data Set Url: Data from the paper "Prospective motion correction enables highest resolution time‐of‐flight angiography at 7T" by Mattern et al. 2018 (Magnetic resonance in medicine) was used in the research. Data can not be made available due to subject privacy reasons.
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