Rotating Beam Line Layout for Multi-Angle Ion Irradiation

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Solution Overview

Problem

Existing radiotherapy systems face inefficiencies due to the high cost and complexity of adding treatment rooms, large beam line lengths, and the need for multi-angle irradiation to minimize damage to normal cells, particularly with carbon ions, which require extensive infrastructure and high magnetic rigidity.

Innovation Solution

A combination of rotating beam lines fixed on a gantry, allowing for multiple operation rooms in a horizontal and 45-degree configuration, enabling simultaneous multi-angle irradiation in a single room, with a compact design that reduces beam line length and equipment costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple treatment rooms are added to improve treatment efficiency, then more patients can be treated simultaneously, but the cost increases enormously

Engineering Contradiction:
Improvetreatment efficiencyVSAvoidcost
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent combines multiple beam lines (horizontal beam line and inclined beam line at 45 degrees) into a single treatment room, allowing simultaneous multi-angle irradiation of multiple patients. This merging approach eliminates the need for separate treatment rooms while maintaining high treatment efficiency, thereby reducing the enormous costs associated with building additional treatment rooms.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The treatment room is designed with universal functionality to accommodate multiple irradiation angles and multiple patients simultaneously. The beam allocation system can dynamically assign different beam lines to different patients based on treatment requirements, making the single room serve multiple purposes that would traditionally require separate dedicated rooms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Manufacturing precision

If beam lines are extended to achieve multi-angle irradiation, then irradiation accuracy improves, but beam line length increases significantly

Engineering Contradiction:
Improveirradiation accuracyVSAvoidbeam line length
Core Design Contradiction:
Manufacturing precisionVSLength of moving object

Solution Approach 1:

The patent introduces a vertical dimension by incorporating an inclined beam line at 45 degrees in addition to the horizontal beam line. This dimensional change allows the system to achieve multi-angle irradiation capabilities without extending the horizontal beam line length, as the inclined beam provides additional irradiation angles from a compact configuration.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The beam allocation system is designed to be dynamic, allowing flexible switching and combination of different beam lines (horizontal and inclined) based on real-time treatment requirements. This dynamic capability enables the system to achieve various irradiation angles and maintain high precision without requiring fixed, extended beam line infrastructure for each possible angle.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If rotating gantry is used to achieve multi-angle irradiation, then treatment versatility improves, but the weight and volume of the gantry become very large

Engineering Contradiction:
Improvetreatment versatilityVSAvoidgantry weight
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The patent segments the beam delivery system into fixed beam lines (horizontal and inclined) rather than using a single rotating gantry structure. Each beam line is independently configured for specific angles, eliminating the need for a massive rotating gantry while maintaining treatment versatility. This segmentation allows the system to achieve multi-angle capability through multiple specialized, lighter components rather than one large general-purpose rotating structure.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4467191B1Irradiation terminal based on combined rotating beam line and application
Publication Date: 2026.02.25 INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
  • EP4467191B1 patent drawingFigure 1a~2
  • EP4467191B1 patent drawingFigure 3~4
  • EP4467191B1 patent drawingFigure 5~6

AI summary

Disclosed are an irradiation terminal based on a combination of rotating beam lines and an application thereof, the irradiation terminal comprises a combination of rotating beam lines, a rotating gantry, and an operation room. The combination of rotating beam lines includes a rotator beam line, a horizontal beam line, and an inclined beam line at a certain angle to the ground, and can achieve irradiation at different angles; the combination of rotating beam lines is arranged on the rotating gantry, and beam allocation for a plurality of operation rooms at different azimuth angles can be implemented through rotating a single combination of beam lines by 0-360 degrees by the rotating gantry; a plurality of rotating beam lines can be combined to achieve multi-angle beam irradiation in a single operation room. The present disclosure solves the problems in the application and promotion of irradiation devices, has outstanding advantages such as a large number of operation rooms, multiple irradiation angles, low construction cost, and low area occupancy, and it greatly improves treatment efficiency and reduces treatment costs, and thus is a universal ion irradiation terminal design scheme.