Gantry Rotation Angle Correction in Radiation Therapy Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radiation therapy apparatuses lack an efficient method for automatically measuring and correcting the rotation speed and angle accuracy of the gantry or radiation irradiating head, relying on subjective and time-consuming manual quality management processes.
Innovation Solution
Incorporating a level control module with electronic level meters and a control unit to measure, compare, and correct the rotation angle and speed of the gantry or radiation irradiating head, and generating reports on quality management results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual quality management methods are used to measure rotation angle accuracy, then the measurement process can be performed, but the process is time-consuming and subjective
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an electronic level meter that uses electronic sensors and processors to automatically measure rotation angles. This substitution of mechanical manual operations with electronic automated systems resolves the contradiction by providing both high measurement precision through electronic sensing and reduced time consumption through automated data acquisition and processing
Solution Approach 2:
The quality management system performs self-measurement and self-correction of rotation angle errors. The electronic level meter mounted on the gantry or radiation irradiating head automatically measures its own rotation angle, and the control unit automatically corrects angle indicator errors without requiring external manual intervention, thereby reducing time loss while maintaining high measurement precision
2Productivity
If automated measurement systems are implemented, then measurement speed and objectivity improve, but device complexity increases
Solution Approach 1:
The electronic level meter and control unit serve multiple functions: measuring rotation angles, comparing measured angles with indicated angles, calculating errors, and automatically correcting angle indicator values. By consolidating these multiple quality management functions into a single integrated system, the patent improves productivity while minimizing the increase in device complexity that would result from multiple separate devices
Solution Approach 2:
The patent introduces an electronic level meter as an intermediary device between the gantry/radiation irradiating head and the quality management process. This intermediary automatically performs measurements and transmits data to the control unit, enabling automated quality management without requiring complex direct integration between all system components, thereby improving productivity while managing device complexity
3Reliability
If frequent quality management checks are performed, then accuracy is maintained, but time and cost increase
Solution Approach 1:
The electronic level meter and control unit enable continuous or frequent quality management checks without significant time penalty. The automated measurement and correction system can perform multiple checks in rapid succession, maintaining high reliability through frequent accuracy verification while minimizing time loss compared to manual methods. The system maintains readiness for immediate measurement, enabling continuous monitoring of rotation angle accuracy
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided is a radiation therapy apparatus on which quality management is performed. The radiation therapy apparatus includes: a body unit; a gantry coupled to one side of the body unit and formed to be rotatable in at least one direction with regard to the body unit; a radiation irradiating head formed at one side of the gantry to irradiate a radiation; and a level control module formed at one side of the radiation irradiating head to measure a rotation angle of the gantry or the radiation irradiating head, compare the measured rotation angle with a rotation angle indicated by an angle indicator of the radiation therapy apparatus, and correct an error of the angle indicator.