The study of post-mortem brain tissue using MRI has been shown to provide a tool to assess whole organ microstructure and pathology with high spatial resolution. However, few studies have been performed on other organs in the body, here we perform ex-vivo imaging of whole kidneys. T1 and T2* of ex-vivo porcine kidneys are monitored over a ten-week period to study how T1 and T2* of the renal cortex and medulla vary over time from fixation. A clear understanding of the effects of fixation on tissue MRI parameters is crucial for interpreting ex-vivo MRI studies.
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