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A volunteer subject with no known significant health problems who participates in research to test a new drug, device or intervention. These volunteers are recruited to serve as controls for patient groups. Healthy volunteers receive the same test, procedure, or drug the patient group receives.

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During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

Search Results 1-10 of 75 for MRI

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  • Study status: Open/Status Unknown
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  1. Study to Determine the Impact of Advanced Magnetic Resonance Imaging (MRI) Using 18F-DOPA (a chemical tracer that highlights certain cells during imaging) During Planning for Proton Beam Radiation Therapy.

    Scottsdale/Phoenix, AZ, Rochester, MN

  2. Study to Evaluate Utilizing MRI for Earlier Diagnosis of Rheumatoid Arthritis

    Rochester, MN

  3. A Study to Evaluate fMRI of Active Deep Brain Stimulation in Epilepsy

    Jacksonville, FL

  4. DSC-MRI in Measuring Relative Cerebral Blood Volume for Early Response to Bevacizumab in Patients With Recurrent Glioblastoma

    Scottsdale/Phoenix, AZ, Rochester, MN, Jacksonville, FL

  5. A Study to Evaluate Feasibility of Microburst Vagus Nerve Stimulator (VNS) Therapy

    Jacksonville, FL

  6. Comparing MRI to CT on Pediatric Craniosynostosis.

    Rochester, MN

  7. MRI to Assess Fibrosis in Eosinophilic Esophagitis Patients

    Rochester, MN

  8. A Study of the Possible Use of a New Imaging Method with Glioma Tumors

    Rochester, MN, Scottsdale/Phoenix, AZ

  9. Evaluating Highly Flexible (aka AIR) RF Coils for Patients Undergoing MR Imaging for Radiation Therapy Planning

    Rochester, MN

  10. Study to Compare Contrast-Enhanced Ultrasound, Contrast-Enhanced Dual Energy Mammography, and Contrast-Enhanced Breast MR for Early Breast Cancer Detection

    Rochester, MN

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