Spine Rotation Measurement via Lower Spine Registration
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Solution Overview
Problem
Current methods are unable to rapidly and precisely measure rotation parameters of the spine on medical images, which are crucial for diagnosing spondylopathy.
Innovation Solution
A method and apparatus that select reference and movement images, register lower spine images, correct and superpose upper spine images, and calculate rotation parameters based on position differences to obtain accurate rotation parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods are used to measure rotation parameters of the spine, then the measurement can be performed, but the measurement speed is slow and precision is insufficient
Solution Approach 1:
The patent segments the spine measurement process into distinct components: selecting reference and movement images, registering lower spine images to establish coordinate systems, transforming upper spine images, and calculating rotation parameters. This segmentation allows each step to be optimized independently, improving both precision and efficiency of the overall measurement process.
Solution Approach 2:
The patent performs preliminary registration of lower spine images to establish a reference coordinate system before measuring rotation parameters of upper spine images. This preliminary action creates a standardized reference framework that enables rapid and precise subsequent measurements, resolving the contradiction between measurement speed and precision.
2Reliability
If multiple spine images are processed to obtain rotation parameters, then diagnostic information is provided, but the processing complexity increases
Solution Approach 1:
The patent divides the complex task of processing multiple spine images into manageable segments: image selection, lower spine registration, upper spine transformation, and parameter calculation. Each segment handles a specific aspect of the processing, reducing overall complexity while maintaining diagnostic reliability through systematic multi-image analysis.
Solution Approach 2:
Instead of directly measuring rotation parameters from multiple unregistered images, the patent inverts the approach by first registering lower spine images to establish a common coordinate system, then transforming upper spine images based on this registration. This inverted sequence simplifies the processing complexity while ensuring diagnostic accuracy.
Data Source
AI summary
The present invention relates to a method and apparatus for measuring rotation parameters of a spine on medical images. The method comprises: selecting a reference image and a movement image from the medical images; determining a lower spine image and an upper spine image in the reference image, and determining a lower spine image and an upper spine image in the movement image; registering the lower spine image in the movement image with the lower spine image in the reference image; correcting the upper spine image in the movement image according to output parameters of registration of the lower spine images; superposing the upper spine image in the reference image with the corrected upper spine image in the movement image to obtain a superposed image; and calculating to obtain the rotation parameters according to a position difference between the upper spine image in the reference image and the upper spine image in the movement image on the superposed image.