Dynamic Viewpoint Adjustment for Moving Organ Projection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical image display apparatuses struggle to accurately observe moving organs over time, as constant perspective projection from the same viewpoint can result in the viewpoint becoming submerged within the organ, making it impossible to project the same position consistently.
Innovation Solution
A system that includes volume data storage, motion information obtainment, viewpoint movement, and second projection means to adjust the viewpoint based on motion information between sets of three-dimensional volume data, ensuring the same position on a moving organ is consistently projected by aligning and transforming three-dimensional volume data sets over time intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If perspective projection is constantly performed from the same viewpoint with respect to volume data of different temporal phases, then the projection process is simple and consistent, but the viewpoint may become submerged in the moving organ making it impossible to project the same position
Solution Approach 1:
The patent applies dynamics by making the viewpoint movable rather than fixed. The viewpoint movement amount is calculated based on the motion amount of the organ between different temporal phases, allowing the viewpoint to dynamically adjust its position to track the moving organ surface and maintain accurate projection of the same anatomical position.
2Measurement precision
If the viewpoint is moved based on organ motion information to maintain consistent observation of the same position, then diagnostic accuracy is improved, but the system complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating the motion amount of the organ between different temporal phases before performing the projection. This motion information is obtained in advance and used to determine the viewpoint movement amount, allowing the system to proactively adjust the viewpoint to compensate for organ motion and maintain accurate positioning.
3Adaptability or versatility
If four-dimensional data with time information are used to observe temporal changes, then the ability to observe temporal changes and various viewpoints is improved, but the computational complexity increases
Solution Approach 1:
The patent applies extraction by isolating and utilizing only the necessary motion information from the four-dimensional data. Instead of processing all temporal data comprehensively, the system extracts the motion amount between specific temporal phases and uses only this extracted information for viewpoint adjustment, simplifying the processing of multi-temporal data while maintaining the ability to observe temporal changes.
Data Source
AI summary
Projection is performed in such a manner that the same point on a moving internal organ can be constantly observed, thereby improving the accuracy of diagnosis. Motion information about the motion of a projection target between one set of three-dimensional volume data in a group of sets of three-dimensional volume data and a different set of three-dimensional volume data in the group of sets of three-dimensional volume data that was obtained by imaging at a different time from the time of imaging of the one set of three-dimensional volume data is obtained based on the projection target that is present in the one set of three-dimensional volume data and the projection target that is present in the different set of three-dimensional volume data. Then, the viewpoint of projection is moved to a position at which the projection target in the different set of three-dimensional volume data can be projected.