Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation
Medical image analysis is critical for diagnosing and planning treatments, particularly in addressing heart disease, a leading cause of mortality worldwide. Precise segmentation of the left atrium, a key structure in cardiac imaging, is essential for detecting conditions such as atrial fibrillation,...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/4/2222 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850081707656478720 |
|---|---|
| author | A. S. M. Sharifuzzaman Sagar Muhammad Zubair Islam Jawad Tanveer Hyung Seok Kim |
| author_facet | A. S. M. Sharifuzzaman Sagar Muhammad Zubair Islam Jawad Tanveer Hyung Seok Kim |
| author_sort | A. S. M. Sharifuzzaman Sagar |
| collection | DOAJ |
| description | Medical image analysis is critical for diagnosing and planning treatments, particularly in addressing heart disease, a leading cause of mortality worldwide. Precise segmentation of the left atrium, a key structure in cardiac imaging, is essential for detecting conditions such as atrial fibrillation, heart failure, and stroke. However, its complex anatomy, subtle boundaries, and inter-patient variations make accurate segmentation challenging for traditional methods. Recent advancements in deep learning, especially semantic segmentation, have shown promise in addressing these limitations by enabling detailed, pixel-wise classification. This study proposes a novel segmentation framework Adaptive Multiscale U-Net (AMU-Net) combining Convolutional Neural Networks (CNNs) and transformer-based encoder–decoder architectures. The framework introduces a Contextual Dynamic Encoder (CDE) for extracting multi-scale features and capturing long-range dependencies. An Adaptive Feature Decoder Block (AFDB), leveraging an Adaptive Feature Attention Block (AFAB) improves boundary delineation. Additionally, a Spectral Synthesis Fusion Head (SFFH) synthesizes spectral and spatial features, enhancing segmentation performance in low-contrast regions. To ensure robustness, data augmentation techniques such as rotation, scaling, and flipping are applied. Laplacian approximation is employed for uncertainty estimation, enabling interpretability and identifying regions of low confidence. Our proposed model achieves a Dice score of 93.35, a Precision of 94.12, and a Recall of 92.78, outperforming existing methods. |
| format | Article |
| id | doaj-art-e6afebdbd44b4853a3dc779951629a19 |
| institution | DOAJ |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-e6afebdbd44b4853a3dc779951629a192025-08-20T02:44:40ZengMDPI AGApplied Sciences2076-34172025-02-01154222210.3390/app15042222Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image SegmentationA. S. M. Sharifuzzaman Sagar0Muhammad Zubair Islam1Jawad Tanveer2Hyung Seok Kim3Department of Artificial Intelligence and Robotics, Sejong University, Seoul 05006, Republic of KoreaDepartment of Artificial Intelligence and Robotics, Sejong University, Seoul 05006, Republic of KoreaDepartment of Computer Science and Engineering, Sejong University, Seoul 05006, Republic of KoreaDepartment of Artificial Intelligence and Robotics, Sejong University, Seoul 05006, Republic of KoreaMedical image analysis is critical for diagnosing and planning treatments, particularly in addressing heart disease, a leading cause of mortality worldwide. Precise segmentation of the left atrium, a key structure in cardiac imaging, is essential for detecting conditions such as atrial fibrillation, heart failure, and stroke. However, its complex anatomy, subtle boundaries, and inter-patient variations make accurate segmentation challenging for traditional methods. Recent advancements in deep learning, especially semantic segmentation, have shown promise in addressing these limitations by enabling detailed, pixel-wise classification. This study proposes a novel segmentation framework Adaptive Multiscale U-Net (AMU-Net) combining Convolutional Neural Networks (CNNs) and transformer-based encoder–decoder architectures. The framework introduces a Contextual Dynamic Encoder (CDE) for extracting multi-scale features and capturing long-range dependencies. An Adaptive Feature Decoder Block (AFDB), leveraging an Adaptive Feature Attention Block (AFAB) improves boundary delineation. Additionally, a Spectral Synthesis Fusion Head (SFFH) synthesizes spectral and spatial features, enhancing segmentation performance in low-contrast regions. To ensure robustness, data augmentation techniques such as rotation, scaling, and flipping are applied. Laplacian approximation is employed for uncertainty estimation, enabling interpretability and identifying regions of low confidence. Our proposed model achieves a Dice score of 93.35, a Precision of 94.12, and a Recall of 92.78, outperforming existing methods.https://www.mdpi.com/2076-3417/15/4/2222deep learningmedical image analysisuncertainty estimationsegmentationradiomics |
| spellingShingle | A. S. M. Sharifuzzaman Sagar Muhammad Zubair Islam Jawad Tanveer Hyung Seok Kim Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation Applied Sciences deep learning medical image analysis uncertainty estimation segmentation radiomics |
| title | Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation |
| title_full | Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation |
| title_fullStr | Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation |
| title_full_unstemmed | Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation |
| title_short | Uncertainty-Aware Adaptive Multiscale U-Net for Low-Contrast Cardiac Image Segmentation |
| title_sort | uncertainty aware adaptive multiscale u net for low contrast cardiac image segmentation |
| topic | deep learning medical image analysis uncertainty estimation segmentation radiomics |
| url | https://www.mdpi.com/2076-3417/15/4/2222 |
| work_keys_str_mv | AT asmsharifuzzamansagar uncertaintyawareadaptivemultiscaleunetforlowcontrastcardiacimagesegmentation AT muhammadzubairislam uncertaintyawareadaptivemultiscaleunetforlowcontrastcardiacimagesegmentation AT jawadtanveer uncertaintyawareadaptivemultiscaleunetforlowcontrastcardiacimagesegmentation AT hyungseokkim uncertaintyawareadaptivemultiscaleunetforlowcontrastcardiacimagesegmentation |