基于轻量级多尺度CNN-Transformer网络的鼻咽癌诊断方法

doi:10.3969/j.issn.0258-8021.2025.03.003

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Abstract Deep Learning (DL) technology is an important method to assist clinicians in the diagnosis of nasopharyngeal carcinoma (NPC) in endoscopic images, However, it still faces two challenges: 1) The visual information in local areas of the image is similar, and redundant, which may lead to inefficient computing efficiency. 2) The long-term dynamic interaction between global context information and local features often leads to ineffective learning and increases redundant calculations. To address the above problems, we proposed a lightweight multi-scale CNN-Transformer hybrid network, named L-MTransNet, which consisted of a multi-scale CNN (MCNN) block and multi-scale Transformer (MTrans) block with a hybrid CNN-Transformer feature extraction backbone. First, CNN block was used to extract local features with multi-scale in endoscopic images and reduce the redundancy of local information. Secondly, to have fine and coarse multi-scale feature representation at the same feature level and reconstruct the global relationship between each multi-scale local feature, the MTrans module composed of amulti-path vision Transformer (MPViT) and Transformer with dynamic convolution (TransNet) was constructed. It gaves the network strong inductive bias and global information interaction capabilities, alleviated feature representation differences, and improved fusion efficiency. The results of extensive experiments based on a clinical endoscopy dataset of 300 patients collected from Shenzhen Second People′s Hospital demonstrated the effectiveness of the L-MTransNet. The Acc was 94.53%±0.35%, the F1 score was 94.17%±0.34%, and the AUC reached 98.61%±0.07% while having a low computational cost with parameters of 5.9 M and FLOPs of 7.6 G. The proposed method exhibited excellent performance and was expected to be applied to the early-stage screening of NPC tumors from endoscopic images.

Key words： nasopharyngeal carcinoma lightweight multi-scale Transformer dynamic convolution

Received: 02 April 2024

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R318

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	Articles by authors
	Ren Yu
	Yang Peng
	Fan Xiaoqin
	Wang Tianfu
	Nie Guohui
	Lei Baiying

Cite this article:

Ren Yu,Yang Peng,Fan Xiaoqin, et al. Nasopharyngeal CarcinomaDiagnosis Method Based on Lightweight Multi-ScaleCNN-Transformer Network[J]. Chinese Journal of Biomedical Engineering, 2025, 44(3): 279-290.

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http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021.2025.03.003 OR http://cjbme.csbme.org/EN/Y2025/V44/I3/279

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