The purpose of this study is to investigate real time 3-D ultrasound imaging of the brain for the diagnosis and evaluation of stroke.
The objective of this proposal is to extend our previous advances to investigate real time 3-D ultrasound imaging of the brain for the diagnosis and evaluation of stroke. Over the last decade, with the availability of color flow Doppler combined with effective ultrasound contrast agents, a renaissance has occurred in transcranial sonography as a low cost, bedside method for evaluation and management of patients with cerebrovascular disease in spite of the image degrading properties of the skull. Our hypothesis is that we can combine new generations of 2D array transducers with ultrasound contrast agents and phase aberration correction to enable real time 3D ultrasound imaging and 3D color flow Doppler of the brain with a factor of 10 improvement in spatial resolution compared to conventional transcranial sonography for improved diagnosis and evaluation of stroke.
- Cerebrovascular Accident
- Cerebrovascular Accident, Intracranial Hypertension
- Intracranial Hypertension
- 3-D ultrasound scanner Device
Intervention Desc: The availability of color flow Doppler combined with effective ultrasound contrast agents in transcranial sonography serves as a low cost, bedside method for evaluation and management of patients with cerebrovascular disease in spite of the image degrading properties of the skull.
- Perflutren Protein-Type A Microspheres for injection Drug
Other Names: Definity Intervention Desc: Activated DEFINITY® (Perflutren Lipid Microsphere) Injectable Suspension is indicated for use in patients with suboptimal echocardiograms to opacify the left ventricular chamber and to improve the delineation of the left ventricular endocardial border.Bolus: The recommended dose for activated DEFINITY® is 10 microliters (μL)/kg of the activated product by intravenous bolus injection within 30-60 seconds, followed by a 10 mL saline flush. If necessary, a second 10 microliters (μL)/kg dose followed by a second 10 mL saline flush may be administered 30 minutes after the first injection to prolong contrast enhancement. Infusion: The recommended dose for activated DEFINITY® is via an IV infusion of 1.3 mL added to 50 mL of preservative-free saline. The rate of infusion should be initiated at 4.0 mL/minute, but titrated as necessary to achieve optimal image enhancement, not to exceed 10 mL/minute.
- Allocation: Non-Randomized
- Masking: Open Label
- Purpose: Diagnostic
- Endpoint: Efficacy Study
- Intervention: Single Group Assignment
|Type||Measure||Time Frame||Safety Issue|
|Primary||Phase aberration correction of skull bone||6 months||No|
- Duke University Lead