Replacement MRI construction method based on three-dimensional head scanning and related device

By registering point clouds and matching shapes with MRI databases using 3D head scans, an individual substitute MRI model is constructed, solving the problem of large electric field calculation errors under MRI-free conditions and realizing efficient and low-cost time-interference stimulus navigation.

CN122089950APending Publication Date: 2026-05-26XI AN JIAOTONG UNIV
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Patent Information

Application Number
CN202610184647.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-09
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Current time-interference stimulation techniques cannot perform personalized modeling without MRI, resulting in large errors in electric field calculation, which affects the effectiveness and safety of stimulation. Furthermore, MRI scans are expensive and time-consuming, limiting their widespread use in clinical and research settings.

Method used

An individual alternative MRI model is constructed by registering point clouds and matching shapes with 3D head scans and MRI databases. This includes MRI image preprocessing, point cloud registration, and shape similarity matching. The Chamfer distance and iterative nearest point algorithms are used to improve matching accuracy.

Benefits of technology

High-precision electric field calculation and navigation were achieved without MRI, significantly improving the accessibility and scalability of temporal interference stimulation, reducing costs, and making it suitable for resource-constrained medical environments and rapid modeling needs.

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Abstract

The invention discloses an alternative MRI (Magnetic Resonance Imaging) construction method based on three-dimensional head scanning and a related device, and the method comprises the steps: carrying out the preprocessing of an image of an MRI database, obtaining head MRI data, and constructing an MRI head three-dimensional model; acquiring three-dimensional head scanning data, and performing point cloud registration and shape similarity matching by using the three-dimensional head scanning data and the MRI head three-dimensional model; and selecting the MRI head three-dimensional model with the highest matching degree with the three-dimensional head scanning data as a substitution model according to the point cloud registration and shape similarity matching result. The method has the advantages of being convenient to operate, low in cost, low in requirement for subjects and the like, a set of automatic retrieval and substitution generation process from three-dimensional scanning to MRI is constructed, the method can be directly used for TI electrode layout, simulation and stimulation navigation, and therefore the application range of the TI technology in clinical and scientific research environments is remarkably widened.
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