Fixed-Position Radiotherapy Planning for Real-Time Tumor Treatment
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Solution Overview
Problem
Radiotherapy treatments are inaccurate due to changes in tumor structure during the long planning and execution process, requiring repeated examinations and plan updates, which prolongs treatment time and reduces efficiency.
Innovation Solution
A method and system that includes imaging an object on a positioning device, generating a region of interest (ROI) from a plan image, and creating a treatment plan with a plan isocenter, allowing for real-time treatment of the target portion using a treatment device while the object is fixed on the positioning device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the treatment plan is determined and modified over a relatively long time, then the doctor can thoroughly analyze the illness condition and create an optimized treatment plan, but the tumor structure may change during this period, reducing treatment accuracy
Solution Approach 1:
The system performs preliminary imaging and treatment planning while the object is still in the initial position, then uses the positioning device to maintain this position throughout treatment execution. This preliminary action captures the tumor structure before changes occur, ensuring treatment accuracy without requiring repeated examinations.
Solution Approach 2:
The system creates a plan image (a copy of the tumor structure) during initial imaging, then uses this copied information for treatment planning and execution. This copying approach allows the treatment team to work with a static representation of the tumor structure even as the actual tumor may change, eliminating the need for repeated real-time imaging.
2Measurement precision
If repeated examinations are conducted to update the treatment plan, then the treatment accuracy can be maintained, but the treatment time is prolonged and efficiency is reduced
Solution Approach 1:
Instead of repeatedly examining the actual tumor, the system uses a single plan image (copy) obtained during initial imaging for all treatment planning and execution. This eliminates the need for repeated examinations while maintaining treatment accuracy, thereby improving treatment efficiency.
Solution Approach 2:
The system replaces the mechanical process of repeated physical examinations with an information-based approach using the initial plan image. The positioning device and imaging system create a digital representation that substitutes for multiple physical examinations, reducing time loss while maintaining accuracy.
3Adaptability or versatility
If the object is repositioned for each treatment session, then the treatment can be flexible and adaptable, but the positioning accuracy decreases and treatment time increases
Solution Approach 1:
The system performs preliminary positioning and imaging to establish the treatment plan, then maintains this position throughout all treatment sessions using the positioning device. This preliminary positioning action ensures consistent accuracy across multiple sessions without requiring repositioning, while still allowing treatment flexibility through the established plan.
Solution Approach 2:
The system merges the positioning function with the treatment delivery system, creating an integrated solution where the positioning device maintains the object's position throughout imaging and treatment. This merging eliminates the need for separate positioning actions for each treatment session, improving both accuracy and efficiency.
Data Source
AI summary
The present disclosure may disclose methods and systems for treating an object. The method may include imaging an object fixed on a positioning device using an imaging device. The method may include obtaining a plan image of the object. The method may include generating information of a region of interest (ROI) of the object based on the plan image of the object. The method may include generating a treatment plan based on the information of the ROI. The treatment plan may include a plan isocenter on the plan image. The method may further include treating a target portion of the object based on the treatment plan using a treatment device. The object may be fixed on the positioning device from a moment that the object is started to fixed on the positioning device to an end of the treatment of the target portion.