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Transcranial Focused Ultrasound Neuromodulation for Post-Stroke Motor Dysfunction

5. Juni 2026 aktualisiert von: Ming Chu, Jiangsu Taizhou People's Hospital

Transcranial Focused Ultrasound Neuromodulation in Post-Stroke Motor Dysfunction

This study aims to evaluate how transcranial focused ultrasound (tFUS) technology can promote neural network remodeling and functional recovery after stroke. By integrating signals from electroencephalography (EEG) and magnetic resonance imaging (MRI), the study will investigate how activating or inhibiting specific brain regions affects motor and cognitive recovery. The goal is to improve patients' motor and cognitive functions, reduce long-term disability, and enhance quality of life. The study also seeks to optimize stimulation parameters to maximize rehabilitation outcomes and explore the mechanisms underlying neuroprotection and functional reconstruction after stroke.

This is a case-control study involving a total of 60 participants. Participants will be ischemic stroke survivors aged 18-75 years, with first-ever stroke onset between 21 days and 6 months, stable vital signs, no consciousness disorders, and the ability to provide informed consent and cooperate with assessments. Eligible participants must have unilateral limb motor impairment, with an upper extremity modified Ashworth score ≤3, Brunnstrom stage II-V, and an upper extremity Fugl-Meyer Assessment (FMA-UE) score between 15 and 60.

Participants will be assigned to either a neuromodulation group (receiving multi-modal neuromodulation targeting specific brain regions) or a control group (receiving sham stimulation or conventional treatment). Primary outcome measures include changes in FMA-UE scores, neuroimaging data (CT/MRI), EEG measurements (resting-state and task-state spectral power, functional connectivity), and laboratory markers (complete blood count, CRP, IL-6, S100β, BDNF). Secondary outcome measures include Brunnstrom stage, Ashworth grade, muscle strength, and patient comfort ratings. Safety will be monitored through blood routine tests, blood biochemistry, and coagulation function.

Statistical analysis will compare key indicator changes between the neuromodulation and control groups before and after intervention. Independent t-tests (for two groups) or ANOVA (for multiple groups) will be used to assess between-group differences, with non-parametric tests applied for data not following a normal distribution.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Studientyp

Interventionell

Einschreibung (Geschätzt)

60

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

  • China
    • Heilongjiang
      • Harbin, Heilongjiang, China, 150001
        • Harbin Institute of Technology
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • (1) Patients with a confirmed imaging diagnosis of first-ever ischemic stroke; (2) Unilateral limb motor involvement; (3) Modified Ashworth Scale (MAS) grade ≤3 for the upper extremity, Brunnstrom stage II-V, and upper extremity Fugl-Meyer Assessment (FMA-UE) score between 15 and 60 (inclusive); (4) Age 18-75 years, onset within 21 days to 6 months, in the subacute or recovery phase; (5) Stable vital signs, no consciousness impairment, informed consent provided, ability to cooperate with clinical assessments, and approval obtained from the institutional ethics committee.

Exclusion Criteria:

  • (1) Contraindications to MRI; (2) Infarction involving the thalamus; (3) Risk of intracranial hemorrhage; (4) Presence of intracranial metallic foreign bodies, cardiac pacemakers, or cochlear implants; (5) Unstable medical condition, severe cognitive impairment or psychiatric disorders rendering the patient unable to comprehend the study or cooperate with assessments; (6) Conditions affecting limb motor function, including fractures, joint contractures, or severe limb spasticity; (7) Current use of medications that alter cortical excitability.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Sonstiges
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Verdreifachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Neuromodulation Group
Multimodal neuromodulation targeting specific neural regions in addition to conventional therapy.
Gerät: Transcranial Focused Ultrasound Neuromodulation
The transcranial focused ultrasound stimulation device employed in this study is the NeuroFUS DPX-500, equipped with a 4-element transducer array and the BrainSight neuronavigation system. Individualized modeling and target segmentation are performed using high-resolution structural MRI and CT images acquired at baseline. Target planning and neuronavigation are conducted based on intracranial acoustic field simulation. The total stimulation duration is 12 minutes, comprising 480 pulse trains with 0.5 seconds on and 1 second off, yielding a duty cycle of 20%.
Schein-Komparator: Control Group
Sham stimulation in addition to conventional therapy.
Gerät: Sham Transcranial Focused Ultrasound Neuromodulation
The control group receives sham stimulation during the neuromodulation phase. All procedural steps are identical to those of the experimental group, including neuronavigation positioning, application of coupling gel, and all other preparatory procedures; however, ultrasound stimulation is not activated. Participants in the control group wear bone-conduction headphones to simulate and counteract acoustic confounding. Group allocation information is blinded to participants.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Upper extremity Fugl-Meyer Assessment (UE-FMA) motor score
Zeitfenster: Baseline (Day 1), Day 7 ( after the 5-day intervention), and Day 21 (2-week follow-up)
Upper extremity motor function assessed by the Fugl-Meyer Assessment (motor subscale). Total score ranges from 0 to 66, with higher scores indicating better motor function.
Baseline (Day 1), Day 7 ( after the 5-day intervention), and Day 21 (2-week follow-up)
Resting-state EEG spectral power
Zeitfenster: Baseline (Day 1) and Day 7 (after the 5-day intervention)
Resting-state EEG spectral power in the delta, theta, alpha, beta, and gamma frequency bands.
Baseline (Day 1) and Day 7 (after the 5-day intervention)
Task-state EEG spectral power
Zeitfenster: Baseline (Day 1) and Day 7 (after the 5-day intervention)
Task-state EEG spectral power in the delta, theta, alpha, beta, and gamma frequency bands.
Baseline (Day 1) and Day 7 (after the 5-day intervention)
Resting-state fMRI fractional ALFF (fALFF)
Zeitfenster: Baseline (Day 1) and Day 7 (after the 5-day intervention)
fALFF derived from resting-state functional MRI, the ratio of low-frequency power to whole-frequency power.
Baseline (Day 1) and Day 7 (after the 5-day intervention)
Resting-state fMRI regional homogeneity (ReHo)
Zeitfenster: Baseline (Day 1) and Day 7 (after the 5-day intervention)
ReHo (Kendall's coefficient of concordance) from resting-state functional MRI, reflecting local synchronization of neuronal activity.
Baseline (Day 1) and Day 7 (after the 5-day intervention)
Resting-state fMRI functional connectivity (FC)
Zeitfenster: Baseline (Day 1) and Day 7 (after the 5-day intervention)
Functional connectivity between regions of interest derived from resting-state functional MRI (Fisher z-transformed correlation coefficients).
Baseline (Day 1) and Day 7 (after the 5-day intervention)

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Brunnstrom recovery stage of the affected upper limb
Zeitfenster: Baseline (Day 1), Day 7 (after the 5-day intervention), and Day 21 (2-week follow-up)
Motor recovery staged using the Brunnstrom approach, an ordinal scale from Stage 1 (flaccid, no movement) to Stage 6 (near-normal coordination), with higher stages indicating better motor recovery.
Baseline (Day 1), Day 7 (after the 5-day intervention), and Day 21 (2-week follow-up)
Modified Ashworth Scale (MAS) grade of the affected upper limb
Zeitfenster: Baseline (Day 1), Day 7 (after the 5-day intervention), and Day 21 (2-week follow-up)
Muscle spasticity graded with the Modified Ashworth Scale, an ordinal scale with 6 levels (0, 1, 1+, 2, 3, 4); higher grades indicate greater spasticity (a worse outcome).
Baseline (Day 1), Day 7 (after the 5-day intervention), and Day 21 (2-week follow-up)
Fractional anisotropy (FA) on diffusion tensor imaging (DTI)
Zeitfenster: Baseline (Day 1) and Day 7 (after the 5-day intervention)
White-matter fractional anisotropy measured by diffusion tensor imaging. Dimensionless (0-1), with higher values indicating greater directional coherence of water diffusion.
Baseline (Day 1) and Day 7 (after the 5-day intervention)

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Jiangsu Taizhou People's Hospital

Mitarbeiter

Harbin Institute of Technology

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Juni 2026

Primärer Abschluss (Geschätzt)

31. Dezember 2026

Studienabschluss (Geschätzt)

31. März 2028

Studienanmeldedaten

Zuerst eingereicht

18. Mai 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

5. Juni 2026

Zuerst gepostet (Tatsächlich)

10. Juni 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

10. Juni 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

5. Juni 2026

Zuletzt verifiziert

1. Juni 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • LSKY 2026-040-01

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

Individual participant data will not be shared because the informed consent obtained from participants does not include provisions for sharing data outside the research team.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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