NCT05538286 · Icahn School of Medicine at Mount Sinai
Transcranial Ultrasound Via Sonolucent Cranioplasty After Minimally Invasive Intracerebral Hemorrhage Evacuation
(TUSC MIS)
What this study is about
Postoperative rebleeding is a major limitation of surgical evacuation for intracerebral hemorrhage (ICH). While computed tomography (CT) is the the usual treatment for postoperative hematoma cavity monitoring, CT requires significant physical and financial costs. Studies have demonstrated varying degrees of effectiveness when using transcranial ultrasound to measure ICH volume.
View original scientific description
Postoperative rebleeding is a major limitation of surgical evacuation for intracerebral hemorrhage (ICH). While computed tomography (CT) is the standard of care for postoperative hematoma cavity monitoring, CT requires significant physical and financial costs. Studies have demonstrated varying degrees of efficacy when using transcranial ultrasound to measure ICH volume. Recently, synthetic implants for cranioplasty have been shown to be safe and sonolucent. This study aims to evaluate the ability of transcranial ultrasound with sonolucent cranioplasty (TUSC) to detect and quantify bleeding in postoperative ICH patients.
Interventions
DEVICE
ClearFit implant
The ClearFit implant is an FDA cleared implant in regular use in the United States. The ClearFit implant and other PMMA cranioplasty implants manufactured by Longeviti have been reported to be safe and effective as cranial implants that permit transcranial ultrasound to be performed. The PMMA cranioplasty implant (Longeviti Neuro Solutions, Hunt Valley, MD) is clear, sonolucent, and was recently shown to be safe and effective in transcranial ultrasonography for bypass patency assessment. The ClearFit cranioplasty being used in this study is industry standard of care.
PROCEDURE
transcranial ultrasonography through sonolucent cranioplasty
The implantation of the ClearFit PMMA sonolucent implant permits TUSC to be performed at the bedside for patients in both the in-patient and outpatient settings. While the patient is an inpatient, the clinical or research teams will attempt to perform TUSC within 1 hour of neuroimaging if that neuroimaging is performed at a time when a trained ultrasound operator is present.
Primary outcome measures
The presence of intracerebral hemorrhage
Time frame: at 6 months
Accuracy of TUSC via ClearFit to detect the presence or absence of postoperative intracerebral hemorrhage compared to CT.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Presence of spontaneous supratentorial ICH ≥20 mL
- Age ≥18 years
- National Institute of Health Stroke Scale (NIHSS) score ≥6
- GCS score 5-15 at presentation
- Undergoing minimally invasive intracerebral hemorrhage evacuation with sonolucent cranioplasty or hemicraniectomy with sonolucent cranioplasty
Exclusion criteria
- Secondary cause for the ICH, such as an underlying vascular malformation (cavernous malformation, arteriovenous malformation, etc.), aneurysm, neoplasm, hemorrhagic transformation of an underlying ischemic infarct; or venous infarct
- History of osteomyelitis
- History of skull neoplasm
- History of comminuted skull fractures
- Infratentorial hemorrhage
- Midbrain extension/involvement
- Coagulopathy defined as INR \> 1.4, elevated aPTT, or concurrent use of direct oral anticoagulants or low molecular weight heparin at ICH onset; known hereditary or acquired hemorrhagic diathesis; coagulation factor deficiency; platelet count \< 100x103cells/mm3, or known platelet dysfunction
- Inability to obtain consent from patient or appropriate surrogate (for patients without capacity)
- Evidence of active infection indicated by fever ≥ 100.7F and/or open draining wound at the time of enrolment
- Any comorbid disease or condition expected to compromise survival or ability to complete follow-up assessments through 1 year
- Based on investigator's judgment, the patient does not have the necessary mental capacity to participate or is unwilling to comply with the protocol follow-up appointment schedule
- Active drug or alcohol abuse that, in the opinion of the site investigator, would interfere with adherence to study enrolments
- Pre-existing DNR/DNI status
Where
- New York, New York
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 5, 2026 · Source of record for eligibility and locations