Coregistration Reliability Indicators for IVUS and Fluoroscopy

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Solution Overview

Problem

Inaccurate or impossible co-registration of intraluminal data with extraluminal images due to non-simultaneous acquisition of x-ray fluoroscopy images and intravascular ultrasound data, or excessive catheter movement during vascular procedures, requiring reacquisition of data and additional procedures.

Innovation Solution

A processor circuit assesses the reliability of co-registration by determining simultaneous x-ray fluoroscopy and intravascular ultrasound image acquisition and catheter speed, providing real-time graphical indicators to ensure accurate alignment, allowing for immediate correction of procedural issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the intravascular device is moved quickly through the blood vessel to improve procedure efficiency, then productivity increases, but coregistration accuracy deteriorates because the device moves too quickly to acquire accurate intravascular data or properly coregister with fluoroscopy images

Engineering Contradiction:

Improveprocedure efficiencyVSAvoidcoregistration accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The system provides real-time feedback to the operator about coregistration quality and catheter speed, enabling dynamic adjustment of the pullback rate to maintain both efficiency and accuracy throughout the procedure

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system allows dynamic adjustment of the catheter pullback speed during the procedure based on real-time coregistration assessment, transitioning from faster movement in stable regions to slower movement when coregistration quality degrades

Inventive Principle:

Principle #15Dynamics

2Reliability

If fluoroscopy images and intravascular data are acquired simultaneously to ensure accurate coregistration, then coregistration reliability improves, but use of energy increases due to continuous x-ray imaging

Engineering Contradiction:

Improvecoregistration reliabilityVSAvoidx-ray energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system uses periodic or intermittent fluoroscopy imaging rather than continuous imaging, acquiring x-ray images at specific intervals or trigger points during the catheter pullback to maintain coregistration reliability while reducing overall energy consumption

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system acquires fluoroscopy images at selective points during the procedure rather than continuously, using partial action (intermittent imaging) sufficient for coregistration purposes without the excessive energy consumption of continuous imaging

Inventive Principle:

Principle #16Partial or excessive action

3Measurement precision

If the user manually monitors and ensures simultaneous acquisition of fluoroscopy images and intravascular data, then coregistration accuracy improves, but device complexity increases due to the need for sophisticated real-time assessment and guidance systems

Engineering Contradiction:

Improvecoregistration accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system automatically assesses coregistration quality and provides guidance without requiring manual intervention, with the coregistration assessment system serving itself to monitor and report on alignment quality throughout the procedure

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12569210B2Coregistration reliability with extraluminal image and intraluminal data

Publication Date: 2026.03.10 PHILIPS IMAGE GUIDED THERAPY CORP

AI summary

A co-registration system includes a processor circuit that generates and displays a first co-registration reliability indicator based on the status of an x-ray imaging device and a second co-registration reliability indicator based on the speed of an intravascular catheter/guidewire. The processor circuit receives, from the x-ray imaging device, x-ray images of a blood vessel while the intravascular catheter/guidewire moves through the blood vessel. The processor circuit receives, from the catheter/guidewire, intravascular data representative of the blood vessel while the catheter/guidewire moves through the blood vessel. The processor circuit co-registers the intravascular data to an x-ray image received from the x-ray imaging device. The processor circuit also receives a signal representative of an inactive status of the x-ray imaging device during the movement of the catheter/guidewire. The processor circuit then displays the first reliability indicator representative of the x-ray fluoroscopy device status and may indicate that co-registration is not possible. The processor circuit also determines a speed of the catheter/guidewire and displays a second indicator representative of the speed of the catheter/guidewire being too fast for reliable co-registration.