3D Medical Image ROI Boundary Adjustment via Fixed Points
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Solution Overview
Problem
Adjusting the boundary of a region of interest in three-dimensional medical images, such as those from ultrasonic diagnostic apparatuses, is complex and difficult, as existing methods only allow for two-dimensional adjustments, lacking the ability to easily specify depth information.
Innovation Solution
The ultrasonic diagnostic apparatus includes a controller with an acquiring unit, a first setting unit, a tracker, a motion information calculator, a second setting unit, a receiver, an adjuster, and a display controller, which sets fixed points on the three-dimensional shape of the heart, allows user input to adjust these points, and maintains their positions while changing the boundary of the region of interest, enabling easy adjustment in three-dimensional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two-dimensional adjustment methods are used for region of interest boundary, then ease of operation is improved, but adaptability to three-dimensional medical images deteriorates
Solution Approach 1:
The patent extends the two-dimensional boundary adjustment mechanism into three-dimensional space by introducing depth information representation. The boundary adjustment unit now operates in 3D space, allowing users to adjust the region of interest boundary not only in the horizontal and vertical directions but also in the depth direction, thereby transforming a 2D adjustment method into a 3D adjustment capability while maintaining ease of operation.
2Adaptability or versatility
If three-dimensional boundary adjustment is implemented, then adaptability to three-dimensional medical images is improved, but device complexity increases
Solution Approach 1:
The boundary adjustment unit is designed to perform multiple functions: it can adjust the region of interest boundary in two-dimensional space (horizontal and vertical directions) and also in three-dimensional space (including depth direction). This multi-functional design allows the same unit to handle both 2D and 3D adjustment tasks, reducing the need for separate adjustment mechanisms and thereby limiting the increase in device complexity.
Solution Approach 2:
The patent introduces a depth information representation unit that adds depth dimension to the existing two-dimensional boundary adjustment framework. By representing depth information in a manner that integrates with the existing 2D adjustment interface, the system enables 3D adjustment capability without requiring completely separate complex adjustment mechanisms, thus limiting the increase in device complexity.
3Measurement precision
If fixed points are maintained during boundary adjustment, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The boundary adjustment mechanism is segmented into multiple independent adjustable points along the region of interest boundary. Each point can be adjusted independently while other points remain fixed, allowing users to modify specific portions of the boundary without affecting the entire boundary structure. This segmentation enables precise control over boundary position while maintaining operational flexibility through selective adjustment.
Data Source
AI summary
A medical diagnosis apparatus of embodiments includes a scanner and processing circuitry. The scanner configured to scan a three-dimensional region including a target region and acquire data of the three-dimensional region. The processing circuitry is configured to discretely arrange fixed points framing three-dimensional shape of the target region in a first medical image based on the data. The processing circuitry is configured to set a boundary of region of interest (ROI) on the three-dimensional shape of the target region according to a position of the fixed point. The processing circuitry is configured to receive an instruction to change a position of the boundary from an input device controlled by a user. The processing circuitry is configured to change the position of the boundary based on a position or positions of at least one of the fixed points according to the instruction while maintaining positions of the fixed points.