- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03560622
Functional Neuroimaging Feedback for Focused Ultrasound Thalamotomy
February 23, 2021 updated by: Vibhor Krishna
Functional Neuroimaging Feedback for Focused Ultrasound Thalamotomy for Tremor Surgery
Focused ultrasound for Essential Tremor is an FDA approved treatment performed by neurosurgeons at the Ohio State Center for Neuromodulation that utilizes ultrasound technology to create a lesion in the thalamus of Essential Tremor patients.
In order to improve long term effectiveness and reduce potential for side effects, brain imaging may be used to examine the functional connectivity of certain brain networks during the procedure.
In order to investigate functional connectivity changes with these long term goals in mind, in this study neuroimaging will be taken immediately before, immediately after, and 24 hours after the focused ultrasound procedure for 10 Essential Tremor patients.
One series of neuroimaging will also be conducted for 20 healthy control subjects to serve as a comparison.
This study will not introduce any risks above standard of care, and may lead to improved long term outcomes of patients undergoing the Focused Ultrasound procedure.
Study Overview
Status
Unknown
Conditions
Intervention / Treatment
Detailed Description
To calculate the connectivity correlates of tremor (CCT) by analyzing and comparing functional connectivity in the tremor network in ET patients and healthy controls.
The fMRI data will be acquired in two separate conditions: t-fMRI and rs-fMRI.
a.
For t-fMRI, patients will perform simple repetitive tasks (e.g.
finger tapping, hand grasping) to identify activation clusters within tremor network.
Functional connectivity between the clusters will be calculated by creating cross-correlation matrices.
A sensitivity analysis will then be performed to determine an optimal value of CCT to distinguish ET patients from controls.
b.
For rs-fMRI the hubs within tremor network will be identified with a state-of-the-art multimodality atlas.
Cross-correlation matrices will be created to calculate measures of functional connectivity.
A sensitivity analysis will then be performed to determine an optimal value of CCT to distinguish ET patients from controls.
2. To study changes in functional connectivity in the tremor network before, immediate postoperative and and 24-hours after FUS-T in ET patients.
a.
The CCT will be calculated and compared between baseline, immediate postoperative and 24-hours post-operative conditions to determine the effect of FUS-T.
For this sub-aim the connectivity data will be separately analyzed for t-fMRI and for rs-fMRI.
b.
The CCT in immediate postoperative and 24-hours post-operative condition among ET patients will be compared to healthy controls to determine whether FUS-T restored the abnormal connectivity in tremor network.
For this sub-aim the connectivity data will be separately analyzed for t-fMRI and rs-fMRI.
Study Type
Interventional
Enrollment (Anticipated)
30
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Ohio
-
Columbus, Ohio, United States, 43210
- The Ohio State Medical Center
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
40 years and older (ADULT, OLDER_ADULT)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
- The tremor diagnosis, disability and medically refractory status are agreed upon by at least two movement disorder trained physicians (neurologists and/or neurosurgeons).
- The patient is deemed suitable for surgical therapy for tremor with VIM targeting.
- The patient is willing to participate in the study and provides written informed consent.
- The patient is able to clearly communicate clinical findings with the clinical team.
- The patient is willing to participate in at least one follow-up visit at 3 or 6 months.
- In order to maintain uniformity of image acquisition only patients undergoing imaging with the 3T MRI at The Ohio State University Wexner Medical Center will be included.
Exclusion Criteria:
- Medically unstable - uncontrolled hypertension, coronary artery disease, significant pulmonary problems, active history of bleeding disorders or anticoagulation.
- Other diagnoses of tremor like Parkinson's disease, traumatic tremor, dystonic tremor, and/or tremor associated with multiple sclerosis
- Unwilling or unable to undergo awake tremor surgery.
- Tremor patients undergoing surgery with targets other than the VIM.
- Significant motion artifact in imaging.
- Unable to undergo 3T MRI imaging.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: NON_RANDOMIZED
- Interventional Model: PARALLEL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
ACTIVE_COMPARATOR: ET cohort
Ten adults with refractory ET (ET cohort) will undergo multi-modality neuroimaging (structural imaging, diffusion tensor imaging (DTI), task-based functional MRI (t-fMRI), and resting state functional MRI (rs-fMRI)).
In addition the ET cohort will also undergo imaging with the identical protocol immediately after and 24 hours after FUS-T.
|
multi-modality neuroimaging consists of structural imaging, diffusion tensor imaging (DTI), task-based functional MRI (t-fMRI), and resting state functional MRI (rs-fMRI).
|
EXPERIMENTAL: control cohort
Twenty adult healthy controls (control cohort) will undergo multi-modality neuroimaging (structural imaging, diffusion tensor imaging (DTI), task-based functional MRI (t-fMRI), and resting state functional MRI (rs-fMRI)).
|
multi-modality neuroimaging consists of structural imaging, diffusion tensor imaging (DTI), task-based functional MRI (t-fMRI), and resting state functional MRI (rs-fMRI).
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
connectivity correlates of tremor (CCT)
Time Frame: during the surgical procedure
|
CCT will be calculated by analyzing and comparing functional connectivity in the tremor network in ET patients and healthy controls.
The fMRI data will be acquired in two separate conditions: t-fMRI and rs-fMRI.
Both t-fMRI and rs-MRI will be calculated based upon functional connectivity between the dentate nucleus, ventral intermediate nucleus, globus pallidus, motor and premotor cortex sensitivity analysis will then be performed to determine an optimal value of CCT to distinguish ET patients from controls.
|
during the surgical procedure
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
changes in functional connectivity
Time Frame: immediately post-operative and 24-hours after surgery for ET patients
|
2. To study changes in functional connectivity in the tremor network before, immediate postoperative and and 24-hours after FUS-T in ET patients.
|
immediately post-operative and 24-hours after surgery for ET patients
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (ACTUAL)
September 1, 2018
Primary Completion (ANTICIPATED)
December 31, 2021
Study Completion (ANTICIPATED)
December 31, 2021
Study Registration Dates
First Submitted
June 6, 2018
First Submitted That Met QC Criteria
June 6, 2018
First Posted (ACTUAL)
June 18, 2018
Study Record Updates
Last Update Posted (ACTUAL)
February 24, 2021
Last Update Submitted That Met QC Criteria
February 23, 2021
Last Verified
February 1, 2021
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2018H0035
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
Yes
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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