Medical Image Marker Positioning via Rotation Angle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical image display apparatuses face challenges in operability during touch operations, particularly when tracing closed regions, as finger overlap with markers or measurement targets occurs due to the need for a large display screen to maintain separation distances, hindering visibility and usability.
Innovation Solution
A medical image display apparatus with a touch screen and a hardware processor that calculates a rotation angle of the touch position relative to a reference point, setting a trace position separated by a defined distance in the corresponding direction, allowing the marker to be displayed at this position, thus avoiding overlap and enabling efficient tracing without requiring a larger screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a marker is displayed at a position separated from the touch position by a separation distance, then finger overlap with the marker or measurement target region is avoided, but the required display screen area increases to twice the area of the measurement target region
Solution Approach 1:
The patent transforms the marker positioning from a two-dimensional planar separation (which requires large screen area) to a three-dimensional solution by utilizing the radial direction from a reference point. The marker is positioned at a trace position obtained by moving from the touch position in the direction of the rotation angle, effectively using the radial dimension to achieve separation without increasing the overall screen area requirement.
Solution Approach 2:
The patent establishes a reference point on the medical image before tracing operations begin. This reference point serves as a predetermined center for calculating rotation angles and determining trace positions. By preparing this reference framework in advance, the system enables dynamic marker positioning that adapts to different measurement target regions without requiring a uniformly large display area.
2Illumination intensity
If a large separation distance is set to avoid finger overlap, then visibility is improved, but the display screen needs to be twice as large as the measurement target region
Solution Approach 1:
The patent applies different separation characteristics to different regions of the display. Instead of using a uniform large separation distance across the entire screen, the marker is positioned at a trace position that is locally optimized relative to the touch position and reference point. This localized positioning approach ensures adequate visibility while maintaining efficient use of the display area.
Solution Approach 2:
The marker position is made dynamic rather than static. The trace position is calculated based on the rotation angle of the touch position with respect to the reference point, allowing the marker to adapt its position dynamically during tracing operations. This dynamic positioning enables the marker to maintain optimal visibility without requiring a fixed large separation distance that would necessitate a larger screen.
3Device complexity
If the marker is displayed at the touch position, then the display is simple, but the user's finger overlaps with the marker or measurement target region, hindering visibility
Solution Approach 1:
The patent introduces a reference point as an intermediary element that mediates between the touch position and the marker position. Instead of directly positioning the marker at the touch position or using a simple fixed offset, the system uses the reference point and rotation angle calculation as intermediate steps to determine the trace position. This intermediary approach adds computational complexity but achieves better visibility without excessive screen area requirements.
Data Source
AI summary
A medical image display apparatus includes: a touch screen that displays a medical image and detects a touch position touched by a user; and a hardware processor that controls to display a marker on the medical image at a position separated from the touch position detected on the touch screen by a separation distance, wherein the hardware processor sets a reference point on the medical image, calculates a rotation angle of the touch position with respect to the reference point as a center, sets a position separated from the touch position by the separation distance in a direction corresponding to the rotation angle as a trace position, and controls to display the marker at the trace position.