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@INPROCEEDINGS{Streun:826975,
      author       = {Streun, M. and Pflugfelder, D. and van Dusschoten, D. and
                      Erven, A. and Jokhovets, L. and Kochs, J. and Metzner, R.
                      and Nöldgen, H. and Koller, R. and Scheins, J. and Postma,
                      Johannes Auke and Bühler, J. and Chlubek, A. and Jahnke, S.
                      and van Waasen, Stefan and Schurr, U.},
      title        = {{I}maging of {P}lants with {MRI} and the dedicated {PET}
                      scanner pheno{PET}},
      reportid     = {FZJ-2017-01182},
      year         = {2016},
      abstract     = {ABSTRACTWithin the German Plant Phenotyping Network (DPPN),
                      we develop Magnetic Resonance Imaging (MRI) and Positron
                      Emission Tomography (PET) as two modalities enabling a
                      noninvasive observation of the three-dimensional structural
                      and functional properties of roots grown in soil. The MRI
                      System is a 4.7T modified small animal scanner (Varian) and
                      produces 3D images with a high root to soil contrast [1]. A
                      user-friendly data processing pipeline has been established
                      to extract quantitative information out of these 3D MRI
                      images [2]. Functional information on carbon transport
                      within intact root systems can be obtained by positron
                      emission tomography. Radioactively labelled [11C]-CO2 is
                      taken up by photosynthesis and labelled carbon is
                      transported into the root system. In order to characterize
                      these transport mechanisms the new PET system phenoPET has
                      been developed in cooperation with Philips Digital Photon
                      Counting (PDPC). The scanner employs LYSO scintillators of
                      1.85×1.85×10 mm3 and digital SiPM arrays as photo
                      detectors (DPC3200-22-44, PDPC) [3] which are arranged in
                      three stacked rings [4]. The field of view measures 18 cm in
                      diameter and 20 cm of axial height. The phenoPET system has
                      been assembled and very first plant images have been
                      obtained using the PET image reconstruction software PRESTO
                      [5]. For a quantitative reconstruction of an arbitrary 3D
                      tracer distribution several correction steps still need to
                      be implemented. Thus, the phenoPET is expected to be
                      available for plant measurements by mid 2016.Combining both
                      modalities for a non-invasive structural (MRI) and
                      functional (PET) observation of roots grown in soil may
                      accelerate trait identification of resource efficient roots.
                      REFERENCES[1] Jahnke et al., “Combined MRI–PET dissects
                      dynamic changes in plant structures and functions”, The
                      Plant Journal 59, 634–644 (2009)[2] D. van Dusschoten et
                      al. „Quantitative 3D Analysis of Plant Roots growing in
                      Soil using Magnetic Resonance Imaging”, Plant Physiology
                      DOI:10.1104/pp.15.01388 (2016)[3] Y. Haemisch, T. Frach, C.
                      Degenhardt, and A. Thon, "Fully Digital Arrays of Silicon
                      Photomultipliers (dSiPM) – a Scalable Alternative to
                      Vacuum Photomultiplier Tubes (PMT)." Physics Procedia 37,
                      1546 (2012)[4] M. Streun et al., “phenoPET: A dedicated
                      PET Scanner for Plant Research based on digital SiPMs
                      (DPCs)”, NSS/MIC 2014, Seattle, Conf. Rec. M11-18
                      (2014)[5] Scheins, J., et al., Fully-3D PET Image
                      Reconstruction Using Scanner-Independent, Adaptive
                      Projection Dara and Highly Rotation-Symmetric Voxel
                      Assemblies, IEEE Transaction on Medical Imaging, Vol. 30,
                      No. 3, Mar 2011, pp. 879-892},
      month         = {May},
      date          = {2016-05-23},
      organization  = {PET/MR and SPECT/MR 2016, Köln
                       (Germany), 23 May 2016 - 25 May 2016},
      subtyp        = {After Call},
      cin          = {ZEA-2 / IBG-2-3-TA},
      cid          = {I:(DE-Juel1)ZEA-2-20090406 /
                      I:(DE-Juel1)IBG-2-3-TA-20110204},
      pnm          = {582 - Plant Science (POF3-582) / DPPN - Deutsches Pflanzen
                      Phänotypisierungsnetzwerk (BMBF-031A053A)},
      pid          = {G:(DE-HGF)POF3-582 / G:(DE-Juel1)BMBF-031A053A},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/826975},
}