Optimization methods, devices, and storage media for dynamic hovering arcs.
By constructing hybrid control point sequences in VMAT technology, inserting static hovering segments, and optimizing radiotherapy planning, the problem of insufficient modulation freedom in complex anatomical structures of VMAT technology is solved, achieving effective protection of organs at risk and dose gradient control.
CN121695437BActive Publication Date: 2026-05-26MANTEIA TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MANTEIA TECH CO LTD
- Filing Date
- 2026-02-14
- Publication Date
- 2026-05-26
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Figure CN121695437B_ABST
Abstract
This application discloses an optimization method, apparatus, and storage medium for dynamic hovering arcs, relating to the fields of medical technology and radiotherapy technology. The method includes: acquiring an initial control point sequence for the dynamic intensity-modulated arc; determining candidate hovering angles based on the modulation complexity of each angle in the initial control point sequence; increasing the number of control points in the initial control point sequence based on the candidate hovering angles to form a hybrid control point sequence; and adjusting the accelerator-executed plan based on the hybrid control point sequence using a multi-objective optimization function. This application solves the technical problem of insufficient modulation freedom in key beam directions in existing volumetric rotational intensity-modulated radiotherapy (VMAT) techniques when dealing with complex anatomical configurations.
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