Publications by authors named "R C Semelka"

Article Synopsis
  • - This study explores how gadolinium (Gd) levels in urine change over time after patients receive a Gd-based contrast agent (GBCA) for MRI, particularly focusing on those with Gd deposition disease.
  • - It involved 45 subjects with normal kidney function, who underwent urine tests to measure Gd concentration 24 hours after receiving a GBCA, and the results indicated that Gd levels remained above normal for 3 months.
  • - The findings suggest that Gd is retained in the body and is eliminated through urine in a predictable logarithmic pattern, regardless of the type of GBCA used, with significant levels observed at 1 month and a gradual decline over the following months.
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Purpose: To demonstrate and evaluate factors contributing to near-cures in patients with Gadolinium Deposition Disease (GDD) undergoing intravenous (IV) DTPA chelation.

Methods: Patients who had undergone or are currently undergoing DTPA chelation for GDD were included in this report based on their medical records that showed their perceived improvement was at least 80% back to normal. A survey was developed that included factors commonly reported by patients treated in one clinic to determine if these 'near-cured' (pre-MRI baseline health) individuals possessed certain factors and lacked others.

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This review describes the current knowledge of a form of gadolinium toxicity termed gadolinium deposition disease (GDD), supplemented with the opinions of the authors developed during 6 years of clinical experience treating GDD. Gadolinium deposition disease can also be considered a subset under the symptoms associated with gadolinium exposure rubric. Young and middle-aged White women of central European genetic origin are the most affected.

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Introduction And Aims: Contradictory results have been reported about hyperintensity of the globus pallidus and/or dentate nucleus on unenhanced T1-weighted magnetic resonance (MR) images after exposure to various gadolinium-based contrast agents. This change in signal intensity varies with different gadolinium-based contrast agents. We aimed to determine whether signal intensity in the dentate nucleus is increased in unenhanced T1-weighted images in patients who have undergone multiple studies with the macrocyclic gadolinium-based contrast agent gadoterate meglumine.

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