About this trial
The goal of this study is to develop a new, non-invasive brain stimulation modality called low intensity focused ultrasound (FUS) as a psychiatric rehabilitation treatment for posttraumatic stress disorder (PTSD). FUS delivers energy comparable to that involved in diagnostic ultrasound but in a millimeter-sized envelope. Unlike currently available methods, the maximal FUS energy is delivered at a distance from a transducer on the scalp. Therefore, its promise is that it can deliver focal and reversible modulation to deeper brain regions involved in PTSD. The investigator team has previously conducted first-in-human research in FUS, and this study builds upon that work to conduct a phase II, dose-finding study. This study will pursue two Aims; the first is whether FUS to the amygdala can improve symptoms, and the second will evaluate whether FUS improves function by reduced disability, over a 1-month period. Short and longer-term effects of FUS will be measured and all FUS parameters are within FDA-defined safety thresholds for diagnostic ultrasound.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
None
Disqualifiers
i) history of seizure disorder or serious neurologic illness including dementia or serious cognitive impairment,
ii) structural or neurologic abnormalities present or in close proximity to sonication site
iii) prior brain surgery
iv) pacemaker or implanted central nervous system device
Trial design
Parallel
Treatments tested in this trial
Brainsonix Ultrasound Device
DeviceThis device delivers low intensity focused ultrasound and delivers either active or sham sonication depending upon the transducer pad used.
Treatment groups
Trial outcomes
Primary outcomes
Post-traumatic stress disorder (PTSD) Checklist for DSM5
The PTSD Checklist for Diagnostic and Statistical Manual-5 (PCL-5) is a gold standard self reported scale of PTSD symptoms. Scores range from 0-80, where higher scores indicate greater symptom severity. The Week 5 visit value is the primary outcome measure of the study.
Secondary outcomes
Sheehan Disability Scale
The Sheehan Disability Scale (SDS) is a self report tool used to assess functional impairment in work, social and family life. Scores range from 0-30, where higher scores indicate greater impairment.
Social and Occupational Function Scale
The Social and Occupational Function Scale (SOFAS) assesses social and occupational function, and is scored from 0-100, where higher scores indicate superior (better) social and occupational function.
Inventory of Depressive Symptoms Self Report
The Inventory of Depressive Symptoms, Self-Report (IDSSR) is a rating scale that measures self-reported depressive symptoms. Scores range from 0-84, where higher scores indicate more severe depressive symptom severity.
Clinician Administered PTSD Scale
The Clinician Administered Posttraumatic Stress Disorder Scale for Diagnostic and Statistical Manual-5 (CAPS-5) is structured clinical interview for posttraumatic stress disorder symptoms. Scores range from 0-80, where higher symptoms indicate more severe symptom severity.
Other outcomes
Visual Analog Scale
The visual analog scale assesses global symptom burden and is assessed immediately after ultrasound administration. Scores are rated on a visual scale from 0 to 100 where 100 is the maximum global burden.
Arterial Spin Labeling/fMRI
Functional magnetic resonance imaging measures are assessed prior to and following all focused ultrasound procedures.
Sponsors and contacts
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