An ultrasonic image segmentation method based on frequency domain adaptive fusion and structure-aware self-distillation

By constructing a frequency-domain adaptive fusion encoder and a structure-aware self-prompting generator, the problems of insufficient generalization ability and low automation in ultrasound image analysis are solved, achieving efficient and automated segmentation of ultrasound images and improving the accuracy and consistency of segmentation results.

CN122415652APending Publication Date: 2026-07-17DALIAN UNIV OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Filing Date
2026-06-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing deep learning models lack generalization ability in ultrasound image analysis, making it difficult to adapt to varied anatomical structures. Furthermore, the automation and stability of the interactive segmentation process are insufficient, resulting in poor consistency of segmentation results and increasing the workload of physicians.

Method used

A frequency-domain adaptive fusion encoder and a structure-aware self-prompt generator are constructed. Multi-scale modeling is performed through wavelet decomposition, frequency-domain adaptation layer and multi-scale frequency-domain information storage module. Geometric structural features are extracted by the structure-aware branch module to generate a sparse self-prompt point set. The result is achieved by deep fusion through multi-domain fusion decoder to realize automated segmentation.

Benefits of technology

It significantly improves the model's adaptability and accuracy in different clinical scenarios, achieves full automation of the segmentation process, and improves the consistency and clinical usability of segmentation results.

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Abstract

本发明属于图像分割技术领域,具体涉及一种频域自适应融合与结构感知自提示的超声影像分割方法。本方法通过构建频域自适应融合编码器,在特征编码阶段将频域信息有效融合至全局空间特征中,增强了模型对超声影像中低信噪比边缘及模糊结构的提取能力;利用结构感知分支对图像进行深层解析,通过提示生成器根据解剖结构特征自动生成与目标形态相匹配的自适应提示点,从而替代传统MedSAM模型中的人工交互过程,消除手动提示带来的主观偏差与操作冗余。最后,通过多域融合解码器综合多尺度特征,生成精准的分割掩码。本方法结合了频域特征增强的鲁棒性与医学大模型架构的泛化性,为复杂超声场景下的智能化辅助诊断提供了高效、稳定的技术保障。
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