RecruitingClinical trialLong-term Result of DTPA (Diethylenetriamine Pentaacetate) Chelation for Gadolinium Deposition DiseaseThis study is aimed at describing the degree of benefit, if any, and the adverse effects, if any, from receiving 5 or more treatment sessions of Gadolinium Deposition Disease using two-day chelation treatment with the chelating agents Calcium Diethylenetriamine pentaacetate (Ca-DTPA) and Zinc Diethylenetriamine pentaacetate (Zn-DTPA).