Motion-Stabilized Clinical Tool Tracking via Fluoroscopic Correction
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Solution Overview
Problem
Existing x-ray imaging systems face challenges in providing stable and accurate images of interventional tools during medical procedures, particularly due to patient motion such as respiratory and cardiac movements, which can lead to motion artifacts and errors.
Innovation Solution
A method is developed to create motion-adjusted images by acquiring a plurality of fluoroscopic images, segmenting the interventional tool, measuring patient motion, correcting the images for motion, registering the tool to the anatomy of interest, and displaying stabilized images to guide interventional medical procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fluoroscopic images are acquired during interventional procedures, then real-time imaging guidance is provided, but patient motion such as respiratory and cardiac movements introduces motion artifacts and errors
Solution Approach 1:
The system performs preliminary motion measurement and correction by acquiring a series of fluoroscopic images, measuring patient motion from these images, and correcting the images for motion before displaying them. This preliminary processing ensures that motion artifacts are removed in advance, providing both real-time guidance and accurate images without the trade-off between speed and reliability
Solution Approach 2:
The system implements feedback by continuously measuring patient motion from fluoroscopic images and using this motion information to correct subsequent images. The motion measurement feedback loop allows the system to dynamically adjust and correct for patient motion in real-time, maintaining both imaging speed and accuracy simultaneously
2Measurement precision
If motion correction is applied to fluoroscopic images, then motion artifacts are removed and image accuracy is improved, but additional processing time and complexity are required
Solution Approach 1:
The system uses the fluoroscopic images themselves to measure patient motion and perform correction. By leveraging the existing image data for self-correction rather than requiring separate motion tracking systems or complex external sensors, the system improves measurement precision while minimizing additional processing complexity
Solution Approach 2:
The fluoroscopic images serve multiple functions: they provide real-time imaging guidance for the interventional procedure and simultaneously serve as the basis for measuring patient motion and correcting motion artifacts. This multi-functionality allows the system to achieve high measurement precision without requiring separate dedicated motion measurement systems, thereby reducing overall complexity
Data Source
AI summary
Various methods and systems are provided for x-ray imaging. In one embodiment, a method includes acquiring a plurality of fluoroscopic images depicting an interventional tool positioned relative to an anatomy of interest of a patient, segmenting the interventional tool in the plurality of fluoroscopic images, measuring motion of the patient in the plurality of fluoroscopic images, correcting the plurality of fluoroscopic images to remove the motion of the patient, registering the segmented interventional tool to the anatomy of interest in the corrected plurality of fluoroscopic images, and displaying images with the segmented interventional tool registered to the anatomy of interest. In this way, a practitioner may view the position and movement of an interventional tool located within a patient relative to static images of the anatomy without motion artifacts or errors induced by patient motion such as respiratory motion or cardiac motion.