Deformable Dosimeter for Real-Time Radiation Dose Measurement
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Solution Overview
Problem
Current radiation therapy dosimeters lack the capability to provide real-time, accurate measurements of radiation dose while simulating the deformation and shape changes of patient organs or anatomical regions, which is crucial for minimizing damage to healthy tissues surrounding tumors.
Innovation Solution
A deformable dosimeter system comprising a phantom or structure with deformable radio-luminescent elements that generate optical energy in response to irradiation, allowing for real-time dose measurement and tomographic reconstruction of radiation dose distribution across multiple points, including different deformation scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional rigid dosimeters are used, then structural stability is maintained, but they cannot simulate deformation and shape changes of patient organs during radiation therapy
Solution Approach 1:
The dosimeter employs a deformable phantom material that can dynamically change shape and volume to simulate organ deformation during radiation therapy. The phantom is configured to undergo controlled deformations including compression, expansion, and shape changes, allowing the dosimeter to adapt its structure to match varying organ geometries while maintaining measurement capability throughout the deformation cycle.
2Measurement precision
If multiple dose points are measured for 3D reconstruction, then measurement precision improves, but device complexity increases
Solution Approach 1:
The dosimeter distributes multiple radio-luminescent elements throughout the deformable phantom at strategically positioned locations corresponding to different anatomical regions and dose distribution zones. Each element independently measures radiation dose at its local position, and the collective data from these distributed elements enables comprehensive 3D dose reconstruction without requiring an overly dense array of sensors throughout the entire phantom volume.
3Reliability
If real-time dose measurement is implemented, then treatment safety improves, but measurement time and system complexity increase
Solution Approach 1:
The dosimeter replaces traditional mechanical or chemical dosimetry methods with radio-luminescent detection technology. The radio-luminescent elements emit light signals in response to radiation exposure, and these optical signals are detected and processed in real-time to provide immediate dose information. This substitution enables continuous monitoring during radiation delivery without requiring post-treatment analysis or interrupting the treatment process.
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
Enables precise real-time measurement and reconstruction of radiation doses across deformed anatomical regions, improving the accuracy of radiation therapy by simulating various deformation scenarios, such as volume changes and shape modifications, thereby reducing damage to healthy tissues.
Implementation Method 1
at least one deformable radio-luminescent element located within the phantom and configured to generate optical energy in response to irradiation
Implementation Method 2
the structure may include a scintillating material, wherein the scintillating material emits light when exposed to radiation
Data Source
AI summary
A radiation dosimeter for measuring radiation dose within a region includes a structure having a scintillating material that emits light when exposed to radiation. Deformable radio-luminescent elements are located within the structure and configured to generate optical energy in response to irradiation.