X-ray Irradiation Direction Selection via Cumulative Dose Distribution
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Solution Overview
Problem
Current medical X-ray systems lack an efficient method to determine optimal X-ray irradiation directions during procedures like arteriovenous malformation treatment, carotid artery stenting, and coronary interventions, which affects cumulative patient dose, visibility of treatment targets, and exposure doses for surrounding personnel, leading to suboptimal treatment planning and execution.
Innovation Solution
A medical apparatus and X-ray system that acquires a three-dimensional cumulative dose distribution and determines suitable X-ray irradiation directions based on this data, along with treatment target site visibility and exposure dose considerations, using control circuitry to calculate and display suitability levels for different irradiation directions, facilitating informed decision-making during treatment planning and execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple factors (cumulative dose, visibility, exposure dose) are considered for determining X-ray irradiation direction, then treatment planning accuracy and safety are improved, but treatment time and system complexity increase
Solution Approach 1:
The system pre-calculates and stores suitability levels for multiple candidate irradiation directions before treatment execution. During treatment, the planning apparatus simply retrieves and displays these pre-computed suitability levels, avoiding time-consuming real-time calculations while maintaining comprehensive evaluation of multiple factors including cumulative dose, visibility, and exposure dose.
2Reliability
If comprehensive evaluation of multiple irradiation directions is performed, then treatment safety and effectiveness are improved, but computational complexity and processing time increase
Solution Approach 1:
The suitability evaluation is segmented into multiple independent factors (cumulative dose distribution, treatment target visibility, exposure dose to surrounding persons). Each factor is evaluated separately and assigned a suitability level, allowing the system to comprehensively assess multiple irradiation directions without overwhelming computational complexity.
Solution Approach 2:
The system transforms the complex multi-factor evaluation problem into a standardized parameter representation by assigning numerical suitability levels (e.g., first suitability level, second suitability level) to each factor. This parameterization simplifies comparison and decision-making while maintaining comprehensive evaluation capabilities.
3Object-affected harmful factors
If real-time cumulative dose tracking is implemented, then patient safety is improved, but system complexity and data processing requirements increase
Solution Approach 1:
The system implements real-time cumulative dose tracking by continuously monitoring and updating the cumulative dose distribution as treatment progresses. This feedback mechanism allows the planning apparatus to re-evaluate irradiation direction suitability based on updated cumulative dose data, ensuring patient safety while maintaining manageable data processing through structured evaluation protocols.
Data Source
AI summary
A medical apparatus according to an embodiment includes control circuitry. The control circuitry is configured to: acquire a three-dimensional cumulative dose distribution of an object; set a treatment target site by treatment accompanied with X-ray irradiation to the object; and determine an X-ray irradiating direction for performing the X-ray irradiation based on the three-dimensional cumulative dose distribution and the treatment target site.