Meeting Banner
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.

Abstract PDF Poster PDF

Keywords

abstracts achieve adaption additionally adjusting allowed angiography approx audience autopsy bath becoming beneficial brain certain chloride clearly clinical computed condensers consisted constant constantly contrast contrasts controlled controls crucial decreased density dependence dependency dependent describe determined documentation doped duration edematous engineering errors established expected exponential external feasible findings fitted flow forensic former hours human illustrates important impossible in vivo increasingly induced influences inner institute invasive inversion investigated investigation irrespective known linear literature little liver living magma measured medical medicine model models molecular monitored mono motion muscle must nuclear often optical placed poor porcine post postmortem protocol proton quadratic radiological radiologists rather reconstruction recovery refrigerator regarding relation relationship relatively researchers residual sample samples scanning scientist seems served slowly sodium solution specified specimen spectroscopy spin storage stored strongly suffer sufficient suited suspended table target technology temperature temperatures term thermometry tissue tissues together trio tube turbo unfixed utilized validity varied varies various versus victims vitro water white