Use of a Foot-Induced Digitally Controlled Resistance Device for Functional Magnetic Resonance Imaging Evaluation in Patients with Foot Paresis
July 7th, 2023
Chronic stroke patients' insured rehabilitation is generally time limited. Imaging-based study of brain activity from walking-related motor tasks can lead to establishing biomarkers to measure improved outcomes and justify extending tailored therapy. A novel, magnetic resonance-compatible, variable-resistance foot motion device and a protocol for use during functional magnetic resonance imaging are presented.
Overview
This study investigates brain activity related to walking in chronic stroke patients to establish biomarkers for assessing rehabilitation outcomes. A novel magnetic resonance-compatible foot motion device and a protocol for its use in fMRI are introduced, aiming to justify extended tailored therapy.
Key Study Components
Area of Science
- Neuroscience
- Rehabilitation
- Imaging
Background
- Chronic stroke patients have limited access to insurance-covered rehabilitation.
- Imaging can provide insights into brain activity during rehabilitation tasks.
- Establishing biomarkers is crucial for measuring therapy effectiveness.
Purpose of Study
- To create a method for measuring improvements in walking-related tasks post-stroke.
- To justify extending rehabilitation therapy based on imaging findings.
Methods Used
- Using a magnetic resonance-compatible foot motion device.
- Functional magnetic resonance imaging (fMRI) to monitor brain activity.
- Implementing specific protocols for rehabilitation tasks within the imaging context.
Main Results
- The study introduces a new tool to analyze brain responses during walking tasks.
- Insights from imaging can guide rehabilitation protocols and assess their effectiveness.
Conclusions
- This approach enables enhanced measurement of rehabilitation outcomes in stroke patients.
- Insights gained can support tailored therapies based on individual progress.
Frequently Asked Questions
Executive Industry Relevance
Quantitative evaluation of neuroplasticity in stroke patients using fMRI and a digitally controlled resistance device enables identification of predictive biomarkers for rehabilitation response. This approach supports risk-adjusted patient stratification and informs decisions on extending therapy beyond standard care. Integrating functional imaging with personalized motor tasks advances translational biomarker development for neurorehabilitation portfolios.
Strategic Applications in Biopharma R&D
Early Discovery & Target Validation
- Enables interrogation of neuroplastic mechanisms underlying motor recovery post-stroke.
- Supports identification of functional biomarkers for patient selection in neurorehabilitation studies.
- Facilitates biological de-risking by linking motor task performance to brain activation patterns.
Screening & Assay Development
- Provides a standardized, reproducible protocol for assessing motor function during fMRI.
- Generates quantitative BOLD signal outputs for objective comparison across patient cohorts.
- Establishes assay readiness for evaluating candidate interventions targeting motor recovery.
Translational & Preclinical Research
- Aligns imaging biomarkers with clinically relevant motor outcomes for translational continuity.
- Enables longitudinal monitoring of therapy-induced neuroplastic changes in disease-relevant systems.
- Supports risk-adjusted advancement of neurorehabilitation strategies based on predictive imaging endpoints.
Pipeline & Workflow Integration
This protocol bridges early discovery of neuroplastic mechanisms with translational biomarker validation in stroke rehabilitation research.
- Discovery Biology: Supports hypothesis testing on neuroplastic remodeling during motor tasks.
- Screening: Delivers reproducible, quantitative imaging outputs for cross-cohort analysis.
- Analytics: Enables statistical comparison of BOLD responses to therapy interventions.
- Translational Research: Connects imaging biomarkers to functional recovery endpoints in preclinical and clinical settings.
- Enterprise Reuse: Provides a scalable platform for evaluating neurorehabilitation strategies across diverse patient populations.
Operational & Enterprise Impact
- Scientific Value: Increases predictive confidence in identifying responders to rehabilitation.
- Operational Value: Standardizes imaging and motor task protocols for multi-site studies.
- Strategic Value: Informs go/no-go decisions for therapy extension based on objective biomarkers.
- Portfolio Impact: Enables risk-adjusted prioritization of neurorehabilitation assets.
Implementation Considerations
- Requires expertise in fMRI acquisition and analysis.
- Needs access to MR-compatible robotic devices and imaging infrastructure.
- Demands cross-team standardization of motor task protocols and data analysis pipelines.
- Adaptation may be needed for different neurological conditions or patient capabilities.
- Practical limitations include patient selection criteria and session duration constraints.
Biopharma FAQs
Chapters in this video
0:00
Introduction
1:33
Subject Screening, Preparation and Setup of the Controlled-Resistance Foot Device
4:18
Subject Strength Testing
6:36
Running the MRI Scan Session, Foot Device Task, and Post-Test Operations
7:29
Results: Analysing Phantom and Subject Imaging
8:10
Conclusion
