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Refined Myocardium Segmentation from CT Using a Hybrid-Fusion Transformer
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Refined Myocardium Segmentation from CT Using a Hybrid-Fusion Transformer
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Journal Article
Refined Myocardium Segmentation from CT Using a Hybrid-Fusion Transformer
2025
Overview
Accurate segmentation of the left ventricle (LV) in cardiac CT images is crucial for assessing ventricular function and diagnosing cardiovascular diseases. Creating a sufficiently large training set with accurate manual labels of LV can be cumbersome. More efficient semi-automatic segmentation, however, often includes unwanted structures, such as papillary muscles, due to low contrast between the LV wall and surrounding tissues. This study introduces a two-input-channel method within a Hybrid-Fusion Transformer deep-learning framework to produce refined LV labels from a combination of CT images and semi-automatic rough labels, effectively removing papillary muscles. By leveraging the efficiency of semi-automatic LV segmentation, we train an automatic refined segmentation model on a small set of images with both refined manual and rough semi-automatic labels. Evaluated through quantitative cross-validation, our method outperformed models that used only either CT images or rough masks as input.
Publisher
Cold Spring Harbor Laboratory,Cold Spring Harbor Laboratory Preprints
Subject
