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Selective excitation of hydrogen doubles the yield and improves the robustness of parahydrogen-induced polarization of low-γ nuclei.
Schmidt, Andreas B; Brahms, Arne; Ellermann, Frowin; Knecht, Stephan; Berner, Stephan; Hennig, Jürgen; von Elverfeldt, Dominik; Herges, Rainer; Hövener, Jan-Bernd; Pravdivtsev, Andrey N.
Affiliation
  • Schmidt AB; Department of Radiology, Medical Physics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, Freiburg 79106, Germany. andreas.schmidt@uniklinik-freiburg.de.
  • Brahms A; German Cancer Consortium (DKTK), Partner Site Freiburg and German Cancer Research Center (DKFZ), Im Neuen-heimer Feld 280, Heidelberg 69120, Germany.
  • Ellermann F; Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany.
  • Knecht S; Otto Diels Institute for Organic Chemistry, Kiel University, Otto-Hahn-Platz 5, 24118, Kiel, Germany.
  • Berner S; Section Biomedical Imaging, Molecular Imaging North Competence Center (MOIN CC), Department of Radiology and Neuroradiology, University Medical Center Kiel, Kiel University, Am Botanischen Garten 14, 24118, Kiel, Germany.
  • Hennig J; NVision Imagning Technologies GmbH, 89081 Ulm, Germany.
  • von Elverfeldt D; Department of Radiology, Medical Physics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, Freiburg 79106, Germany. andreas.schmidt@uniklinik-freiburg.de.
  • Herges R; Department of Radiology, Medical Physics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, Freiburg 79106, Germany. andreas.schmidt@uniklinik-freiburg.de.
  • Hövener JB; Department of Radiology, Medical Physics, Medical Center, University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstr. 5a, Freiburg 79106, Germany. andreas.schmidt@uniklinik-freiburg.de.
  • Pravdivtsev AN; Otto Diels Institute for Organic Chemistry, Kiel University, Otto-Hahn-Platz 5, 24118, Kiel, Germany.
Phys Chem Chem Phys ; 23(47): 26645-26652, 2021 Dec 08.
Article in En | MEDLINE | ID: mdl-34846056
ABSTRACT
We describe a new method for pulsed spin order transfer of parahydrogen-induced polarization (PHIP) that enables high polarization in incompletely 2H-labeled molecules by exciting only the desired protons in a frequency-selective manner. This way, the effect of selected J-couplings is suspended. Experimentally 1.25% 13C polarization were obtained for 1-13C-ethyl pyruvate and 50% pH2 at 9.4 Tesla.

Full text: 1 Database: MEDLINE Language: En Year: 2021 Type: Article

Full text: 1 Database: MEDLINE Language: En Year: 2021 Type: Article