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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 41-50 of 77 for MRI

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  1. A Study of Functional MRI Response of Light on Alertness and Performance

    Rochester, MN

  2. Alzheimer's Disease Neuroimaging Initiative 3 (ADNI3) Protocol

    Jacksonville, FL, Rochester, MN

  3. Partnership for Early Detection of Alzheimer's Disease Using Advanced MR Technology

    Rochester, MN

  4. A Study Using Magnetic Resonance Imaging (MRI) as a Non-invasive Method for Assessing Pancreatic Fibrosis (MINIMAP)

    Rochester, MN

  5. Study to Validate Auto Registry and Integration of Ultrasound into Procedure

    Rochester, MN

  6. A Study to Compare Dual-Energy CT and Whole Body MRI for Monitoring of Bone Involvement in Multiple Myeloma Patients

    Rochester, MN

  7. A Study of 68GA-PSMA-Gadoxetate PET/MR or PET/CT for Evaluation of Hepatocellular Carcinoma

    Rochester, MN

  8. A Study to Evaluate Photon Counting Detector CT Utility in Identifying Acute Wrist Fractures.

    Rochester, MN

  9. A Study of Clinical Evaluation of a PET/MR System

    Rochester, MN

  10. A Study to Evaluate Cardiac Magnetic Resonance Elastrography (MRE) of Acute Myocardial Infarcts

    Rochester, MN

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