Afterloading Device Integrated Transducer for Real-Time Dose Verification
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Solution Overview
Problem
Current brachytherapy systems are inefficient and inaccurate due to cumbersome in-vivo dosimetry processes and potential discrepancies in radiation source positioning, leading to deviations in treatment doses.
Innovation Solution
An afterloading device with integrated in-vivo dosimetry system, featuring a second flexible transport element with a transducer that can be maneuvered independently to verify source position and dose delivery, reducing user interaction and enhancing accuracy through real-time monitoring and data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate radiation detector and electrometer system is used for in-vivo dosimetry, then radiation dose can be detected and verified, but the installation process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines the radiation detector with the afterloading device itself, integrating the dosimetry function into the existing brachytherapy system. The detector is incorporated into the afterloader mechanism, allowing dose verification to be performed as part of the standard treatment delivery process without requiring separate equipment installation or additional procedural steps.
2Productivity
If the radiation source positioning is assumed accurate without verification, then the treatment process is simplified, but discrepancies in source position lead to significant deviations in treatment doses
Solution Approach 1:
The patent implements a feedback mechanism where the integrated detector continuously monitors the radiation source position and dose delivery in real-time during treatment. The system compares actual delivered dose with the planned dose distribution, providing immediate feedback that allows for correction of positioning errors or treatment plan adjustments, ensuring accurate dose delivery while maintaining treatment efficiency.
3Reliability
If manual installation of external detectors is required for dosimetry, then dose verification is possible, but user interaction increases and operational complexity increases
Solution Approach 1:
The patent enables the afterloading device to perform its own dosimetry and dose verification functions through the integrated detector system. The device automatically monitors its own radiation source positioning and dose delivery without requiring external detector installation or manual intervention, making the system self- verifying and significantly simplifying operation while maintaining reliable dose monitoring.
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 solution enables high-accuracy, efficient in-vivo dosimetry with minimal user intervention, ensuring correct dose delivery and reducing treatment time by allowing independent checks of source position and dose verification outside the afterloading device.
Implementation Method 1
The known dose detector comprises a diode sensor that is operable to generate an electronic signal which is fed to an electrometer or other voltage or charge measuring device external to the patient
Data Source
AI summary
An afterloading device for effectuating a brachytherapy treatment, comprising a first elongated flexible transport element, arranged to maneuver a radiation source between a storage position inside the afterloading device and a treatment position outside the afterloading device, the afterloading device further comprising a second elongated flexible transport element, having at least one transducer, the second transport element being arranged to move the at least one transducer between a first transducer position and a second transducer position.