Track topics on Twitter Track topics that are important to you
The purpose of this study is to find out more about the usefulness of ultrasound in combination with a contrast solution to look for blood vessel blockage or occlusion in the brains of stroke patients.
Ischemic stroke is a common, devastating and costly disease. A stroke is usually caused by a blockage in one of the arteries that carries blood to the brain.
The purpose of this study is to visualize the blood vessels in the brain and to look for vessel occlusion (i.e., blockage) which may be the cause of stroke. Ultrasound contrast imaging may or may not improve the ability to diagnose vessel occlusion in the brain quickly and precisely, thereby expediting the therapy currently in place for acute stroke.
The contrast solutions used in this study have been approved by the Food and Drug Administration because they improve ultrasound pictures taken in the heart. While the solutions are approved for use with ultrasound in viewing the heart, the usefulness in viewing brain vessels has not been approved and is experimental.
The study will enroll 403 participants with possible diagnosis of acute stroke. Individuals participating in the study will be injected with a contrast solution via an intravenous line. A small probe will be used to obtain images of blood vessels in the head. The study researchers will measure vital signs prior to injection of the contrast solution, 5 minutes after the injection, and at the end of the ultrasound. Each participant will have a 5-minute mental function assessment and a brief neurological exam. Participants will undergo at least 3 ultrasounds. The total time of each ultrasound is less than 30 minutes.
This study is part of the Specialized Program of Translational Research in Acute Stroke to enhance and initiate translational research that ultimately will benefit stroke patients. Results from this study may help investigators learn about the future development of new diagnostic tests for stroke.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
University of California San Diego Hillcrest Medical Center
Active, not recruiting
University of California, San Diego
Published on BioPortfolio: 2014-08-27T03:46:30-0400
To determine whether transcranial 2-MHz ultrasound combined with intravenous administration of microbubbles improves early recanalization in patients with acute ischemic stroke caused by m...
Phase 3, Randomized, Placebo-Controlled, Double-Blinded Trial of the Combined Lysis of Thrombus With Ultrasound and Systemic Tissue Plasminogen Activator (tPA) for Emergent Revascularization in Acute Ischemic Stroke
This is a randomized, placebo-controlled, phase 3 clinical trial to evaluate the efficacy and safety of transcranial ultrasound (US) as an adjunctive therapy to tissue plasminogen activato...
The purpose of this study is to examine the effects of delivering recombinant tissue plasminogen activator (rt-PA) and ultrasound to the site of the blood clot blocking blood flow to the b...
The purpose of this study is to investigate real time 3-D ultrasound imaging of the brain for the diagnosis and evaluation of stroke.
This is a randomized, placebo controlled, parallel group dose escalation trial to evaluate the safety, tolerability, and activity of four sequential dose tiers of MRX-801 and ultrasound as...
Immobilization of the extremities after stroke is known to be the foremost reason of articular cartilage degeneration and musculoskeletal ultrasound (US) has become increasingly important in the asses...
Ultrasound has been used for almost 30 years in a wide variety of clinical applications and environments. From the austerity of battlefields to the labor and delivery ward, ultrasound has the ability...
Global stroke epidemiology is changing rapidly. Although age-standardized rates of stroke mortality have decreased worldwide in the past 2 decades, the absolute numbers of people who have a stroke eve...
Post-stroke depression affects approximately one third of stroke survivors. In non-stroke affected populations, depressive symptomatology is associated with hypoalbuminemia. This is also common among ...
Since the use of tissue plasminogen activator for acute ischemic stroke (IS), stroke care pathways have been developed for patients with suspicion of acute stroke. The aim of this prospective observat...
The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.
Tissue ablation of the PROSTATE performed by ultrasound from a transducer placed in the RECTUM. The procedure is used to treat prostate cancer (PROSTATIC NEOPLASMS) and benign prostatic hypertrophy (PROSTATIC HYPERPLASIA).
A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)
A condition caused by the failure of body to dissipate heat in an excessively hot environment or during PHYSICAL EXERTION in a hot environment. Contrast to HEAT EXHAUSTION, the body temperature in heat stroke patient is dangerously high with red, hot skin accompanied by DELUSIONS; CONVULSIONS; or COMA. It can be a life-threatening emergency and is most common in infants and the elderly.
Ultrasonography applying the Doppler effect, with frequency-shifted ultrasound reflections produced by moving targets (usually red blood cells) in the bloodstream along the ultrasound axis in direct proportion to the velocity of movement of the targets, to determine both direction and velocity of blood flow. (Stedman, 25th ed)
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...
Stroke - Cerebrovascular Disease (CVA)
A stroke is a serious medical condition that occurs when the blood supply to part of the brain is cut off. Strokes are a medical emergency and prompt treatment is essential because the sooner a person receives treatment for a stroke, the less damage is ...
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...