Enhanced Systems and Methods for Phase Unwrapping in Dense MRI using Deep Learning

Publication ID: 24-11857288_0001_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Systems and Methods for Phase Unwrapping in Dense MRI using Deep Learning,” Published Technical Disclosure No. 24-11857288_0001_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857288_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,288.

Summary of the Inventive Concept

This inventive concept presents improved systems and methods for phase unwrapping in Dense MRI using deep learning, addressing the limitations of traditional techniques and enhancing the accuracy, efficiency, and real-time capabilities of strain analysis in cardiac imaging.

Background and Problem Solved

The original patent disclosed systems and methods for phase unwrapping in Dense MRI using deep learning, which had limitations in terms of noise and artifacts in the phase image, computational time required for phase unwrapping, and real-time strain analysis capabilities. This inventive concept addresses these limitations by introducing novel deep learning-based techniques for phase unwrapping, post-processing, and real-time strain analysis.

Detailed Description of the Inventive Concept

The new claims describe a system for phase unwrapping in DENSE MRI, comprising a deep learning module configured to generate a wrapping label map and a corresponding phase image, and a post-processing module to refine the phase image based on spatial and temporal consistency. The inventive concept also includes a method for improving the accuracy of strain analysis in DENSE MRI, which involves acquiring displacement encoded MRI data, generating a phase image using a deep learning-based phase unwrapping technique, and quantifying global and segmental strain associated with the heart of a subject. Additionally, the inventive concept encompasses a computer-readable medium storing instructions for performing a method of phase unwrapping in DENSE MRI, and a system for real-time strain analysis in DENSE MRI, comprising a deep learning module and a strain analysis module.

Novelty and Inventive Step

The new claims introduce novel deep learning-based techniques for phase unwrapping, post-processing, and real-time strain analysis, which are not obvious from the original patent. The inventive concept's novelty lies in the integration of these techniques to provide improved accuracy, efficiency, and real-time capabilities for strain analysis in cardiac imaging.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include the use of different deep learning architectures, such as convolutional neural networks (CNNs) or recurrent neural networks (RNNs), for phase unwrapping and strain analysis. Additionally, the inventive concept could be adapted for use in other medical imaging modalities, such as computed tomography (CT) or ultrasound.

Potential Commercial Applications and Market

The inventive concept has significant commercial potential in the medical imaging industry, particularly in the field of cardiac imaging. The improved accuracy, efficiency, and real-time capabilities of the inventive concept could lead to widespread adoption in hospitals and clinics, and could also enable new applications in personalized medicine and medical research.

Field of Art

Medical imaging, specifically cardiac magnetic resonance imaging (MRI) with a focus on deep learning techniques for phase unwrapping and strain analysis

Person of Ordinary Skill (PHOSITA) Profile

A skilled practitioner with expertise in medical image processing, deep learning neural networks, signal processing, and cardiovascular imaging techniques, holding advanced degrees in biomedical engineering, computer science, or medical imaging

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable extensions of the source patent's deep learning approach to phase unwrapping in DENSE MRI. The proposed modifications leverage known machine learning architectures and post-processing techniques to incrementally improve strain analysis accuracy and computational efficiency. The technical solutions represent logical combinations of existing techniques within the established framework of deep learning-based medical image processing.

Obvious Combinations & Variations

Source Patent Element
U-Net structured CNN for generating wrapping label map
PTD Variation
Adding a post-processing module to refine phase image based on spatial and temporal consistency
Obviousness Reasoning
Post-processing techniques are standard practice in image processing to reduce noise and improve signal quality, representing a predictable optimization of existing deep learning approaches
Source Patent Element
Displacement encoded MRI data for cardiac strain analysis
PTD Variation
Real-time strain analysis system with integrated display module
Obviousness Reasoning
Implementing real-time visualization is a known design choice for medical imaging systems, providing immediate clinical feedback using standard computational techniques
Source Patent Element
Deep learning-based phase unwrapping for DENSE MRI
PTD Variation
Computational efficiency improvements reducing processing time by at least 50%
Obviousness Reasoning
Performance optimization of neural network architectures is a routine engineering task with predictable outcomes in machine learning applications
Source Patent Element
Cardiac strain analysis using CNN segmentation
PTD Variation
Exploring alternative neural network architectures like RNNs for phase unwrapping
Obviousness Reasoning
Substituting different neural network types is an obvious variation within machine learning design space, representing a finite set of known architectural approaches
Source Patent Element
Phase image generation from MRI data
PTD Variation
Extending technique to other medical imaging modalities like CT and ultrasound
Obviousness Reasoning
Cross-modal adaptation of image processing techniques is a standard engineering approach when fundamental algorithmic principles are transferable
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857288 and the published technical disclosure, a person of ordinary skill in the art would find the claimed variations obvious and anticipated, as the proposed modifications represent predictable extensions of existing deep learning techniques for medical image processing, utilizing known computational methods to incrementally improve phase unwrapping and strain analysis in medical imaging systems.

Original Patent Information

Patent NumberUS 11,857,288
TitleSystems and methods for phase unwrapping for dense MRI using deep learning
Assignee(s)University of Virginia Patent Foundation