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Browse 40,629 clinical trials for rheumatoid arthritis. Find studies that match your criteria and connect with research centers.
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NCT06667726
This phase II trial studies how well the addition of 18F-DOPA (amino acid) positron emission tomography (PET)/computed tomography (CT) to standard of care (SOC) imaging can improve the clinical management of patients with brain tumors in over 50% of cases. PET is an imaging test that helps to measure the information about functions of tissues and organs within the body. A PET scan uses a radioactive drug (radiotracer) to show this activity. CT scan uses X-rays to create images of the bones and internal organs within the body. Combining a PET scan with a CT scan can help make the images easier to interpret. PET/CT scans are hybrid scanners that combine both of the two modalities into a single scan. This allows images of both anatomy (CT) and function (PET) to be taken during the same scan. The 18F-DOPA PET/CT scan is done with a very small amount of a radioactive tracer called FDOPA. The PET/CT scan is then used to detect the location of tumors. Using the 18FDOPA-PET/CT scan in addition to the SOC scan may improve the clinical management of patients with brain tumors.
NCT05081999
Patients with heart disease are often prescribed many medications and these patients may experience drug interactions or negative drug related side effects. With newer medications and treatments available, it is not well known whether older drugs, such as beta-blockers, are still an effective and safe option for treating heart disease. Some evidence suggests beta-blockers should be continued, whereas other evidence suggests beta-blockers might cause unnecessary harm. The study hopes to determine whether continuation or discontinuation of beta-blockers will affect long term cardiovascular outcomes. The study investigators will also examine how beta-blockers continuation or discontinuation affects several quality of life measures.