Stellenwert neuer MR-Techniken in der MR-PET

Translated title of the contribution: Value of new MR techniques in MR-PET

U. I. Attenberger, H. H. Quick, A. Guimaraes, O. Catalano, J. N. Morelli, S. O. Schoenberg

Research output: Contribution to journalArticle

Abstract

The unparalleled soft tissue contrast of magnetic resonance imaging (MRI) and the functional information obtainable with 18-F fluorodeoxyglucose positron emission tomography (FDG-PET) render MR-PET well-suited for oncological and psychiatric imaging. The lack of ionizing radiation with MRI also makes MR-PET a promising modality for oncology patients requiring frequent follow-up and pediatric patients. Lessons learned with PET computed tomography (CT) over the last few years do not directly translate to MR-PET. For example, in PET-CT the Hounsfield units derived from CT are used for attenuation correction (AC). As 511 keV photons emitted in PET examinations are attenuated by the patient's body CT data are converted directly to linear attenuation coefficients (LAC); however, proton density measured by MRI is not directly related to the radiodensity or LACs of biological tissue. Thus, direct conversion to LAC data is not possible making AC more challenging in simultaneous MRI-PET scanning. In addition to these constraints simultaneous MRI-PET acquisitions also improve on some solutions to well-known challenges of hybrid imaging techniques, such as limitations in motion correction. This article reports on initial clinical experiences with simultaneously acquired MRI-PET data, focusing on the potential benefits and limitations of MRI with respect to motion correction as well as metal and attenuation correction artefacts.

Original languageGerman
Pages (from-to)1118-1124
Number of pages7
JournalRadiologe
Volume53
Issue number12
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Magnetic Resonance Imaging
Tomography
Multimodal Imaging
Fluorodeoxyglucose F18
Ionizing Radiation
Photons
Positron-Emission Tomography
Artifacts
Psychiatry
Protons
Metals
Pediatrics

Keywords

  • Attenuation correction
  • Functional imaging
  • Metal artefacts
  • Morphological information
  • Motion artefacts

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Medicine(all)

Cite this

Attenberger, U. I., Quick, H. H., Guimaraes, A., Catalano, O., Morelli, J. N., & Schoenberg, S. O. (2013). Stellenwert neuer MR-Techniken in der MR-PET. Radiologe, 53(12), 1118-1124. https://doi.org/10.1007/s00117-013-2559-5

Stellenwert neuer MR-Techniken in der MR-PET. / Attenberger, U. I.; Quick, H. H.; Guimaraes, A.; Catalano, O.; Morelli, J. N.; Schoenberg, S. O.

In: Radiologe, Vol. 53, No. 12, 12.2013, p. 1118-1124.

Research output: Contribution to journalArticle

Attenberger, UI, Quick, HH, Guimaraes, A, Catalano, O, Morelli, JN & Schoenberg, SO 2013, 'Stellenwert neuer MR-Techniken in der MR-PET', Radiologe, vol. 53, no. 12, pp. 1118-1124. https://doi.org/10.1007/s00117-013-2559-5
Attenberger UI, Quick HH, Guimaraes A, Catalano O, Morelli JN, Schoenberg SO. Stellenwert neuer MR-Techniken in der MR-PET. Radiologe. 2013 Dec;53(12):1118-1124. https://doi.org/10.1007/s00117-013-2559-5
Attenberger, U. I. ; Quick, H. H. ; Guimaraes, A. ; Catalano, O. ; Morelli, J. N. ; Schoenberg, S. O. / Stellenwert neuer MR-Techniken in der MR-PET. In: Radiologe. 2013 ; Vol. 53, No. 12. pp. 1118-1124.
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