Radiographic Apparatus Composite Image Area Dose Calculation
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Solution Overview
Problem
Existing radiographic systems face challenges in calculating area doses without an area dose meter, particularly when obtaining composite images from multiple radiation detecting apparatuses during single radiation irradiation.
Innovation Solution
A radiographic apparatus and method that determine a region to analyze by eliminating overlap from the spatial placement of multiple radiation detecting apparatuses, allowing for the calculation of area doses for the composite image using a determining unit and obtaining unit, without the need for an area dose meter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple radiation detecting apparatuses are used to obtain composite images, then the imaging coverage and diagnostic capability are improved, but the complexity of area dose measurement and calculation increases
Solution Approach 1:
The patent divides the composite image into multiple individual radiographic images from different detecting apparatuses, and calculates the area dose for each image separately. This segmentation allows the complex multi-apparatus dose measurement to be broken down into manageable individual calculations, which are then integrated to obtain the total area dose for the composite image.
Solution Approach 2:
The patent creates a universal dose information table that can be applied across multiple radiation detecting apparatuses. By establishing a standardized relationship between imaging conditions and doses that works for each apparatus individually, the system achieves multi-functionality where the same calculation methodology can be universally applied to any number of detecting apparatuses in the composite imaging system.
2Measurement precision
If an area dose meter is installed to measure area dose, then measurement accuracy is improved, but the cost and installation complexity increase
Solution Approach 1:
The patent creates a virtual copy of the dose measurement function by using existing radiographic image data and imaging condition information to calculate area dose through a dose information table. Instead of installing physical dose meters, the system copies the measurement capability through computational methods, achieving accurate dose assessment without additional hardware installation.
Solution Approach 2:
The patent replaces the mechanical/physical measurement system (area dose meter hardware) with an information processing system. By substituting physical dose measurement devices with computational algorithms that use imaging conditions and pre-established dose relationships, the system eliminates the need for complex hardware installation while maintaining measurement capability.
3Ease of manufacture
If a simple dose conversion method is used without an area dose meter, then cost is reduced, but the ability to handle composite images from multiple apparatuses is insufficient
Solution Approach 1:
The patent segments the composite image processing into individual radiographic image processing units, each handled by the simple dose conversion method. By treating each detecting apparatus's image separately and then integrating the results, the system maintains the simplicity and low cost of individual dose calculations while achieving the versatility to handle complex multi-apparatus composite imaging scenarios.
Data Source
AI summary
A radiographic apparatus, comprises a generating unit that generates a composite image using a plurality of radiographic images that have been obtained by a plurality of radiation detecting apparatuses through single radiation irradiation by a radiation generating unit, a determining unit that determines a region to be analyzed so as to eliminate an overlap in an overlapping portion arising from a spatial placement of the plurality of radiation detecting apparatuses, and an obtaining unit that obtains an area dose for the composite image by obtaining an area dose for the region to be analyzed determined by the determining unit.