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Moderne Leberbildgebung mit der MRT—aktuelle Trends und Zukunft

Modern visualization of the liver with MRI—current trends and future perspectives

  • Leberdiagnostik, Teil 1
  • Published:
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Zusammenfassung

Die vorliegende Arbeit gibt einen Überblick und vermittelt Grundlagenwissen über relevante technische Entwicklungen in der Magnetresonanztomographie (MRT) der Leber: 3D-Sequenzen, Atemtriggerung, parallele Bildgebung und 3 Tesla (T). 3D-Sequenzen können als T1w-Sequenzen für die Kontrastmitteldynamik oder als T2w-Sequenzen für die MR-Cholangiographie angewendet werden. Durch die konsequente Weiterentwicklung der Atemtriggerung ist es möglich, auch bei Patienten mit fehlender Atemanhaltefähigkeit eine gute Bildqualität auf T2w-Bildern zu erhalten. Die parallele Bildgebung hat als universelle Technik zur Beschleunigung der Akquisition gerade für die MRT der Leber besondere Bedeutung und es zeigte sich, dass auch in der Leber die verkürzte Akquisitionszeit nicht zulasten der Bildqualität geht. Durch den Einsatz von 3T-Systemen sind viele weitere Fortschritte in der MRT der Leber zu erwarten, es müssen aber auch bisher nichtrelevante Probleme gelöst werden. Insgesamt erlauben die vorgestellten Innovationen alleine und in Kombination miteinander eine schnelle, robuste und hochqualitative MRT-Diagnostik der Leber.

Abstract

This contribution provides an overview and imparts basic knowledge on pertinent technical developments in magnetic resonance imaging (MRI) of the liver: 3D sequences, respiratory triggering, parallel imaging, and 3 Tesla (3T). 3D sequences can be used as T1-weighted (T1w) sequences for analyzing dynamics of contrast enhancement or as T2w sequences for MR cholangiography. Consistent improvements in respiratory triggering make it possible to obtain good image quality on T2w scans even in patients unable to hold their breath. Parallel imaging as a universal technique to accelerate image acquisition is particularly appropriate for MRI of the liver, and it has been shown that the reduced acquisition time is not achieved at the expense of image quality. Further progress in MRI of the liver can be expected with use of the 3T systems, but hitherto irrelevant problems must still be solved. Overall the innovations presented here, applied alone or in combination, facilitate rapid, robust, and high-quality MRI diagnostic assessment of the liver.

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Authors and Affiliations

  1. Institut für Klinische Radiologie, Klinikum Großhadern der Ludwig-Maximilian-Universität München

    C. J. Zech, S. O. Schoenberg, K. A. Herrmann, O. Dietrich, A. Wallnöfer, T. Helmberger & M. F. Reiser

  2. Siemens Medical Solutions, Erlangen

    M. I. Menzel

  3. Rapid—Biomedizinische Geräte, Rimpar

    T. Lanz

  4. Institut für Klinische Radiologie, Klinikum Großhadern der Ludwig-Maximilians-Universität, Marchioninistraße 15, 81377 , München

    C. J. Zech

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  1. C. J. Zech
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  2. S. O. Schoenberg
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  3. K. A. Herrmann
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  4. O. Dietrich
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  7. A. Wallnöfer
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  8. T. Helmberger
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  9. M. F. Reiser
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Correspondence to C. J. Zech.

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Zech, C.J., Schoenberg, S.O., Herrmann, K.A. et al. Moderne Leberbildgebung mit der MRT—aktuelle Trends und Zukunft. Radiologe 44, 1160–1169 (2004). https://doi.org/10.1007/s00117-004-1132-7

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  • DOI: https://doi.org/10.1007/s00117-004-1132-7

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