Radiation Imaging Apparatus Posture Reliability Determination
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Solution Overview
Problem
Current radiation imaging systems face challenges in accurately acquiring the posture between radiation generation and imaging apparatuses due to user-dependent timing for posture determination, leading to potential imaging errors from posture information with large errors.
Innovation Solution
A radiation imaging apparatus equipped with a radiation detection unit, a sensor unit for posture data, and a determination unit that assesses the reliability of posture information using threshold values and evaluation values, ensuring accurate posture determination and reducing imaging errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If posture information is acquired based on user determination timing, then the system can obtain posture data between radiation generation apparatus and radiation imaging apparatus, but the accumulated posture change amount varies depending on timing causing imaging errors
Solution Approach 1:
The determination unit continuously monitors posture information from sensors and provides feedback by determining whether the accumulated posture change amount exceeds a predetermined threshold. This feedback mechanism ensures that posture information is only used when within acceptable error margins, preventing imaging errors while maintaining operational flexibility.
Solution Approach 2:
The system changes the parameter of posture information usage based on the accumulated change amount. When the accumulated posture change remains within a predetermined range, posture information is utilized for imaging guidance. When it exceeds the threshold, the system determines not to use this posture information, thereby maintaining imaging accuracy despite variations in user determination timing.
2Ease of operation
If reference posture is set manually by user, then the system can establish a baseline for posture measurement, but the accumulated posture change may vary depending on when the user sets the reference
Solution Approach 1:
The sensor unit automatically and continuously acquires posture information without requiring manual reference setting by the user. The system serves itself by continuously monitoring posture changes and determining usability based on accumulated change amounts, eliminating the need for manual reference posture setting while maintaining measurement precision.
Solution Approach 2:
The system performs preliminary continuous acquisition of posture information through sensors before any imaging operation. By continuously monitoring and evaluating accumulated posture changes in advance, the system determines whether posture information is reliable for use, eliminating the need for manual reference setting and ensuring measurement accuracy from the start.
3Reliability
If posture information is continuously monitored, then the system can detect when posture changes exceed acceptable thresholds, but additional determination logic is required
Solution Approach 1:
The determination unit implements a simplified evaluation that checks whether the accumulated posture change amount exceeds a predetermined threshold. This partial action approach focuses only on the critical determination of usability based on change magnitude, avoiding complex analysis while ensuring reliability through threshold-based filtering of posture information.
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
The proposed solution enables reliable determination of posture information, reducing the likelihood of imaging errors by ensuring accurate posture data is acquired at appropriate times, thus enhancing the precision of radiation imaging systems.
Implementation Method 1
an acceleration sensor and a gyroscope are used. Those sensors are provided to each of both of the apparatus, and the posture (position and angle) of each apparatus is derived from accelerations being output values of the acceleration sensor and angular velocities being output values of the gyroscope.
Implementation Method 2
an acceleration sensor and a gyroscope are used. Those sensors are provided to each of both of the apparatus, and the posture (position and angle) of each apparatus is derived from accelerations being output values of the acceleration sensor and angular velocities being output values of the gyroscope.
Implementation Method 3
A radiation imaging apparatus including a flat panel detector (FPD) formed of a semiconductor material is currently widely used as a radiation imaging apparatus to be used for medical image diagnosis and nondestructive inspection which uses radiation such as an X-ray.
Data Source
AI summary
To know whether it is required to acquire information on a posture at an appropriate timing in a radiation imaging apparatus, provided is a radiation imaging apparatus for executing radiation imaging based on emitted radiation, the radiation imaging apparatus including: a radiation detection unit which detects radiation; a sensor unit which outputs data serving as a basis of information on a posture of the radiation imaging apparatus; and a determination unit which determines reliability of the information on the posture obtained based on data output from a sensor through use of a threshold value relating to the reliability of the information on the posture and an evaluation value generated based on information on the radiation imaging apparatus including the information on the posture.