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Native T1 Mapping Index (T1 Time) Calculator
Native T1 Mapping Index (T1 Time): Comprehensive Explanation and Clinical Context Native myocardial T1 reflects the longitudinal relaxation of protons in tissue and rises with increased free water or extracellular matrix expansion (edema, diffuse fibrosis, amyloidosis) and falls with intracellular storage (Anderson–Fabry, iron overload). Absolute T1 values depend on magnetic field strength (1.5T vs 3T) and mapping se