Skin tumor three-dimensional electrical impedance tomography method and device and storage medium

By utilizing nonlinear techniques of planar electrodes and spatial virtual electrode mapping in skin tumor detection, combined with a deep learning model, the applicability and reconstruction stability issues of traditional 3D-EIT in skin tumor detection across multiple sites are solved, achieving high-precision three-dimensional conductivity distribution imaging, suitable for non-invasive detection and invasion depth assessment of skin tumors.

CN121817848APending Publication Date: 2026-04-10JIANGSU UNIV OF TECH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-02
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

Existing 3D-EIT technology for skin tumor detection suffers from several problems, including sensors that are difficult to adapt to the needs of multi-site detection, difficulty in obtaining stable and reliable imaging results from three-dimensional reconstruction, and low measurement stability and reconstruction accuracy.

Method used

By using planar electrodes to collect boundary voltage signals on the skin surface, and combining this with a feedforward neural network to achieve a nonlinear mapping from the planar electrode domain to the spatial virtual electrode domain, an equivalent voltage of the spatial virtual electrode is generated. This voltage is then mapped to a two-dimensional voltage feature map through bilinear interpolation, input into a three-dimensional electrical impedance imaging reconstruction network, and a U-Net network with a sliding window Transformer is used for depth matching inversion. This constructs a finite element model of skin tissue and trains it on a simulation dataset.

Benefits of technology

It achieves enhanced response to perturbations in deep tissue conductivity without changing the measurement boundaries, obtaining stable, non-invasive, and highly accurate three-dimensional conductivity distribution, suitable for non-invasive detection and invasion depth assessment of skin tumors, and improves the robustness of measurement and reconstruction accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121817848A_ABST
    Figure CN121817848A_ABST
Patent Text Reader

Abstract

The invention discloses a skin tumor three-dimensional electrical impedance tomography method and device and a storage medium. The method comprises the following steps: acquiring a skin surface boundary voltage signal by using a planar electrode, and generating a space virtual electrode equivalent voltage through nonlinear mapping from a planar electrode domain to a space virtual electrode domain; mapping the voltage into a two-dimensional voltage feature map through bilinear interpolation, inputting the feature as prior information into a three-dimensional electrical impedance imaging reconstruction network, and performing depth matching inversion on the body area conductivity distribution based on a sliding window SwinUNet network to obtain a three-dimensional conductivity image; constructing a skin tissue finite element model, and generating a simulation data set; and training nonlinear mapping by adopting the simulation data set and verifying the depth matching inversion performance. The method can still keep stable reconstruction quality under uncertain conditions such as poor electrode contact, channel loss and skin structure change, has high robustness and adaptability, and has good clinical application value.
Need to check novelty before this filing date? Find Prior Art