A Method of Lung Organ Segmentation in CT Images Based on Multiple Residual Structures and an Enhanced Spatial Attention Mechanism

Lingfei Wang, Chenghao Zhang, Yu Zhang and Jin Li ()
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Lingfei Wang: College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China
Chenghao Zhang: College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China
Yu Zhang: College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China
Jin Li: College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150001, China

Mathematics, 2023, vol. 11, issue 21, 1-18

Abstract: Accurate organ segmentation is a fundamental step in disease-assisting diagnostic systems, and the precise segmentation of lung is crucial for subsequent lesion detection. Prior to this, lung segmentation algorithms had typically segmented the entire lung tissue. However, the trachea is also essential for diagnosing lung diseases. Challenges in lung parenchyma segmentation include the limited robustness of U-Net in acquiring contextual information and the small size of the trachea being mixed up with lung, making it difficult to identify and reconstruct the lungs. To overcome these difficulties, this paper proposes three improvements to U-Net: multiple concatenation modules to enhance the network’s ability to capture context, multi-scale residual learning modules to improve the model’s multi-scale learning capabilities, and an enhanced gated attention mechanism to enhance the fusion of various hierarchical features. The experimental results demonstrate that our model has achieved a significant improvement in trachea segmentation compared to existing models.

Keywords: lung parenchyma segmentation; multiple concatenation module; multi-scale residual learning module; gated attention mechanism; U-Net (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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