Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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WITHDRAWN
OBSERVATIONAL
2008-02-29
2010-06-30
Brief Summary
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This pilot study encompasses two sub-aims:
* Evaluate the ability of laser speckle contrast imaging to image cerebral blood flow (CBF) intraoperatively. We will image the changes in CBF in response to somatosensory stimulation. (5 patients).
* Simultaneously image hemoglobin oxygenation, blood volume, blood flow, and cerebral metabolic rate of oxygen (CMRO2) changes during somatosensory stimulation using a combined laser speckle and multi-wavelength reflectance imaging system. (5 patients).
Detailed Description
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While "asleep" under anesthesia during an already scheduled surgery, the neurosurgeon will position the microscope to take pictures of the surgery area. The pictures will be taken after the brain is exposed, but before the rest of the surgery takes place. Researchers will shine the red light onto the brain during your surgery. The light will then be seen by the camera.
"Cortical mapping" will done, which is an established procedure used to detect important areas of the brain. Usually, a nerve in the wrist is stimulated with a very small shock of electricity and a response is detected in the brain by an electrode placed on the surface. The electrical shock administered is not dangerous or painful. It will be given while "asleep." For the experimental procedure used in this study, the same stimulation will be used, but the impulse detection will be performed using the speckle-contrast imaging camera. Researchers hope to see if the change in blood flow gives the same information as if the electrode was placed on the brain and used to detect the electricity. Doing both procedures is expected to take no more than 20 minutes. During this time, continual monitoring done by the surgeon and operating room staff.
Your participation in this study will end when the surgery is finished.
The results of this study will not be used by the surgeon during your surgery or any future treatments. These measurements are being done for research only and will not be used by the surgeon to make any decisions about your surgery.
This is an investigational study. This device is investigational and has not been approved by the Food and Drug Administration (FDA), but it has been declared safe by the National Institutes of Health. Up to 10 patients will take part in the study. All will be enrolled at M. D. Anderson.
Conditions
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Keywords
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Study Design
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CASE_ONLY
PROSPECTIVE
Study Groups
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Speckle-Contrast Imaging
Speckle-Contrast Imaging
Imaging camera scan that uses reflected red light to take pictures of the amount of blood flowing in brain and the amount of oxygen in blood.
Interventions
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Speckle-Contrast Imaging
Imaging camera scan that uses reflected red light to take pictures of the amount of blood flowing in brain and the amount of oxygen in blood.
Eligibility Criteria
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Inclusion Criteria
2. Planned intraoperative electrocortical mapping.
3. Able to render written informed consent.
Exclusion Criteria
2. Patients with a vascular malformation within the proximity of the cortex area imaged.
ALL
No
Sponsors
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National Institutes of Health (NIH)
NIH
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
M.D. Anderson Cancer Center
OTHER
Responsible Party
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Principal Investigators
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Jeffrey Weinberg, MD
Role: PRINCIPAL_INVESTIGATOR
M.D. Anderson Cancer Center
Locations
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U.T.M.D. Anderson Cancer Center
Houston, Texas, United States
Countries
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Related Links
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UT MD Anderson Cancer Center Website
Other Identifiers
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2006-0102
Identifier Type: -
Identifier Source: org_study_id