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Abstract #2469

Investigation of Temperature Dependence of Tissue Relaxation Parameters for Post-Mortem Imaging

Julia Kruisz1, Andreas Petrovic2, Rudolf Stollberger1, Eva Scheurer2

1Institute for Medical Engineering, University of Technology Graz, Graz, Austria; 2Ludwig Boltzmann Institute for Clinical-Forensic Imaging, Graz, Austria

MRI in forensics is becoming increasingly important for a non-invasive and objective documentation before autopsy. However, the usually lower temperatures alter the tissues relaxation times which often leads to poor image contrast. In this study we investigated T1 and T2 of various tissues from 4 to 38C. For most investigated samples a linear relationship describes the temperature dependence of relaxation times. Regarding the contrast of a spin echo sequence we found that for certain tissues it is impossible to obtain the same contrast as in vivo by adjusting the repetition time.