Compensation film preparation method for reconstructing high-precision three-dimensional model based on optical body surface data

The method for preparing a compensation membrane by reconstructing a high-precision three-dimensional model using optical surface data solves the problems of poor adaptability of traditional compensation membranes and radiation risks of CT compensation membranes. It enables personalized, safe and efficient radiotherapy compensation membrane preparation, ensuring uniform dose distribution and target area protection.

CN122399265APending Publication Date: 2026-07-17NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
Filing Date
2026-06-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, traditional compensation membranes cannot adapt to the complex curved surface morphology of the patient's chest wall, supraclavicular region, and axillary region, resulting in uneven dose distribution. CT-based personalized compensation membranes pose radiation risks and have cumbersome procedures, while optical surface scanning-based solutions have insufficient data quality, making it difficult to meet the requirements for preparing high-precision three-dimensional models.

Method used

A clinical-grade optical body surface monitoring system was used to collect three-dimensional point cloud data. A high-precision three-dimensional model was generated by a body surface contour feature extraction algorithm and a three-dimensional body surface reconstruction prediction model. A dose calculation was performed by combining a compensation membrane time-series simulation optimization algorithm and the 3DSlicer platform. A personalized compensation membrane was prepared using 3D printing technology and optimized by CT simulation positioning scan and radiotherapy planning system.

Benefits of technology

It achieves a close fit between the compensation membrane and the patient's body surface, avoiding abnormal dose distribution, simplifying the process, reducing costs, ensuring a uniform and sufficient dose to the target area and protection of surrounding organs, and improving the accuracy and safety of radiotherapy.

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Abstract

The application discloses a compensation film preparation method based on optical body surface data reconstruction of high-precision three-dimensional models, relates to the technical field of postoperative radiotherapy of breast cancer, and comprises the following steps: sequentially performing body surface data collection, high-precision model reconstruction, compensation film optimization design, 3D printing preparation, CT positioning scanning and radiotherapy plan optimization, collecting three-dimensional data of a related region of a patient through an optical body surface monitoring system, and generating a high-precision body surface model through feature screening and reconstruction. The method does not need additional ionizing radiation, effectively solves the problems of poor compensation film fitting degree and insufficient quality of existing optical scanning data, improves the compensation film and body surface fitting precision and radiotherapy dose accuracy through whole-process personalized optimization and accurate preparation, is suitable for postoperative radiotherapy of breast cancer, and has the characteristics of strong clinical applicability and high safety and efficiency.
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