Tomographic Motion Analysis Viewing Point Conversion
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Solution Overview
Problem
Current ultrasonic diagnostic apparatuses cannot accurately analyze the relative motion within the internal body by accounting for the influence of distant and proximal body parts, limiting the precision of heart function evaluation.
Innovation Solution
An apparatus and method for motion analysis using tomographic images that allows for the specification of arbitrary points, conversion of motion using a viewing point, and output of data to analyze relative motion, enabling the distinction between automatic and polyergic motions, and evaluation of motion centers and axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a tomographic image is used to observe motion of living body tissues, then the motion can be visualized, but the influence of distant and proximal body parts on the motion cannot be excluded
Solution Approach 1:
The patent segments the motion analysis by specifying multiple arbitrary points on the tomographic image and analyzing the motion of each point independently. This allows the motion of a target point to be separated from the influence of distant and proximal body parts, enabling precise measurement of relative motion while excluding unwanted motion components.
2Measurement precision
If the entire tomographic image is tracked, then the overall motion is captured, but the relative motion of a specific site excluding proximal and distant site effects cannot be obtained
Solution Approach 1:
The patent divides the motion analysis into multiple independent point tracking operations. By specifying multiple arbitrary points and analyzing their individual motions, the system can extract relative motion information of a specific site while excluding the effects of proximal and distant sites, without requiring complex overall image tracking.
Solution Approach 2:
The patent changes the parameter of motion analysis from tracking the entire image to tracking specific points defined by coordinates. This parameter change simplifies the analysis by focusing on discrete point motions rather than overall image motion, enabling precise measurement of relative motion while reducing computational complexity.
3Measurement precision
If multiple arbitrary points are specified and viewing point conversion is performed, then relative motion analysis excluding proximal and distant site effects is achieved, but the data processing complexity increases
Solution Approach 1:
The patent performs viewing point conversion by changing the reference frame from a fixed origin to an arbitrary point specified on the tomographic image. This parameter change enables the calculation of relative motion by simply subtracting the coordinates of the viewing point from the coordinates of the target point, achieving precise relative motion analysis through straightforward coordinate transformations rather than complex processing.
Data Source
AI summary
When a motion in an internal body is analyzed by employing a tomographic image, a relative motion in an internal body is analyzed by moving a viewing point to an arbitrary place. The present invention is composed of: a tomographic image acquisition device 1 for acquiring a tomographic image of a subject targeted for observation; a motion analysis device 2 to which the tomographic image acquisition device 1 is connected, the analysis device performing a motion analysis from the tomographic image obtained by the tomographic image acquisition device 1; and a display device 3 connected to the motion analysis device 2, the display device displaying data outputted by the motion analysis device 2. The motion analysis device 2 includes image processing means 4 for processing the tomographic image obtained by the tomographic image acquisition device 1, point specification means 5 for specifying a plurality of arbitrary points on the tomographic image after image processing by the image processing means 4, viewing point conversion means 6 for converting a motion of a point serving as an observation point to a motion obtained by defining a point other than the observation point as a viewing point from among the plurality of points specified by the point specification means 5, and data output means 7 for outputting data obtained by the viewing point conversion means 6.