Radiation Therapy Calibration via Virtual Model Copying
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Solution Overview
Problem
Current radiation therapy systems face challenges in patient mobility and quality assurance due to individualized commissioning, which requires significant time and effort, and lacks standardization for calibration and servicing.
Innovation Solution
A radiation therapy treatment system that allows for calibration to a 'gold standard' using a multi-dimensional scanning arm and an attenuation block, enabling automatic tuning and commissioning without the need for water tanks, ensuring dosimetric equivalence across systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual commissioning is performed for each radiation therapy system, then system-specific calibration accuracy is improved, but commissioning time and complexity increase significantly
Solution Approach 1:
The patent creates a digital copy (virtual model) of the radiation therapy system that can be calibrated once and then used to represent multiple physical systems. This virtual model captures the essential geometric and dosimetric characteristics, allowing commissioning results to be replicated across multiple systems without repeating the full commissioning process for each individual system.
Solution Approach 2:
The patent develops a universal commissioning approach where a single calibration process produces a standardized virtual model that can serve multiple radiation therapy systems. This universal model enables the same commissioning results to be applied across different systems, reducing the need for system-specific commissioning while maintaining calibration accuracy.
2Manufacturing precision
If individual commissioning is performed for each radiation therapy system, then system-specific parameters are optimized, but patient mobility between systems becomes difficult
Solution Approach 1:
By creating a standardized virtual model that can be copied and applied across multiple systems, the patent enables consistent treatment parameters to be maintained when patients transfer between systems. The virtual model serves as a portable representation that preserves the optimized parameters across different physical systems.
Solution Approach 2:
The patent enables parameter standardization by transforming system-specific parameters into a universal reference framework. This allows treatment parameters to be consistently applied across different systems through the virtual model, facilitating patient mobility while maintaining treatment precision.
3Measurement precision
If individual commissioning is performed for each radiation therapy system, then system-specific calibration is achieved, but quality assurance and servicing become more difficult
Solution Approach 1:
The virtual model serves as a standardized reference copy that simplifies quality assurance and servicing. Instead of dealing with unique calibration parameters for each system, technicians can use the universal virtual model as a reference standard, making measurements and adjustments more consistent and easier to verify across different systems.
Solution Approach 2:
The patent creates an equipotential framework where all systems are referenced to the same virtual model standard. This establishes a common baseline for calibration and quality assurance, eliminating the need to navigate different system-specific calibration schemes and simplifying servicing procedures.
4Measurement precision
If water tanks are used for gold standard calibration, then accurate attenuation results are obtained, but the process requires significant space and setup time
Solution Approach 1:
The patent extracts the essential calibration function from the complex water tank setup and consolidates it into a simplified virtual model. By taking out the measurement and representation functions separately, the system eliminates the need for large physical water tanks while maintaining the ability to achieve accurate attenuation measurements through computational methods.
Solution Approach 2:
The patent replaces the mechanical water tank calibration system with a computational virtual model. This substitution eliminates the need for large physical infrastructure while maintaining measurement accuracy through software-based calculations and simulations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces commissioning time, enhances patient mobility between treatment systems, and simplifies servicing and quality assurance by establishing a standardized calibration process, allowing for efficient and consistent treatment delivery.
Implementation Method 1
an attenuation block movable into and out of the path of the radiation beam produced by the radiation source
Data Source
AI summary
A radiation treatment system and method of commissioning the system, the system including a gantry, a radiation source operable to produce a beam of radiation, and a measurement device. The measurement device is physically connected to the gantry, and includes a multi-dimensional scanning arm, and a detector. The method includes generating radiation from the radiation source, passing the radiation through an attenuation block, and receiving radiation with the measurement device. The measurement device is positioned such that it is not in contact with water. Data is generated from the radiation received and the system is commissioned using the generated data to match system characteristics to a previously defined standard.