MRI-Derived 3D Mesh Registration for Fluoroscopy Navigation
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Solution Overview
Problem
Existing surgical navigation systems relying on CT scans expose patients to radiation and face accuracy issues due to uneven MRI plane distribution, limiting their use in robotic surgery.
Innovation Solution
A method to generate a 3D mesh from MRI images by registering them with a nearest neighbor CT template, allowing seamless integration with navigation and robotic systems, reducing radiation exposure and enhancing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CT scans are used for surgical navigation, then imaging accuracy is improved, but patient radiation exposure increases
Solution Approach 1:
The patent creates a synthetic CT scan by registering an MRI scan to a template CT scan. This copies the anatomical structure information from the MRI (which has no radiation) using the spatial framework of a template CT, thereby achieving CT-like accuracy without actual radiation exposure to the patient.
Solution Approach 2:
The patent introduces a template CT scan as an intermediary reference. Instead of directly exposing the patient to radiation for a new CT scan, the system uses a pre-existing template CT as a mediator to provide the necessary anatomical framework, combining it with the patient's MRI data to create a synthetic representation.
2Object-affected harmful factors
If MRI scans are used for surgical navigation, then radiation exposure is reduced, but imaging accuracy decreases due to uneven plane distribution
Solution Approach 1:
The patent changes the spatial parameter distribution by registering the MRI scan to a template CT scan that has uniformly distributed anatomical planes. This transformation adjusts the MRI data into the coordinate space of the template, creating a synthetic scan with uniform plane distribution that matches CT accuracy standards.
Solution Approach 2:
The patent transforms the MRI data from its native coordinate space into the coordinate space of a template CT scan. This dimensional transformation reorganizes the anatomical information along the template's uniformly distributed planes, effectively converting the MRI into a synthetic CT-like representation with improved spatial uniformity.
3Object-affected harmful factors
If 3D mesh generation from MRI is implemented, then radiation-free imaging is achieved, but processing complexity increases
Solution Approach 1:
The patent performs preliminary actions by pre-processing the MRI scan to extract anatomical information and by preparing a template CT scan with known anatomical planes. These pre-computed resources simplify the actual 3D mesh generation process, as the system only needs to register the pre-processed MRI data to the template rather than performing complex real-time processing.
Data Source
AI summary
An imaging system can be configured to merge a three-dimensional (“3D”) mesh based on a magnetic resonance imaging (“MRI”) image of an anatomical feature to a fluoroscopy image of the anatomical feature. The imaging system can include a computer platform configured to perform operations. The operations can include obtaining the 3D mesh based on the MRI image. The operations can further include obtaining the fluoroscopy image. The operations can further include determining a registration seed. The operations can further include registering the 3D mesh based on the MRI image to the fluoroscopy image using the registration seed.