Bengel studied human medicine from 1988 to 1995 and received his doctoral degree at the University of Erlangen-Nuremberg. He completed his specialty training in nuclear medicine at the Department of Nuclear Medicine of the Technische Universität München in 2000.
He is the current director of the Department of Nuclear Medicine at the Hannover Medical School. He received the venia legendi (habilitation) for nuclear medicine at the Technology Union München in 2002. Bengel was then recruited by the Johns Hopkins University, Baltimore, Doctor of Medicine, United States of America, where he served as an associate professor of radiology and medicine and as the director of Cardiovascular Nuclear Medicine from 2005 to 2010.
He then accepted a professorship and the position as director of Nuclear Medicine at the Hannover Medical School where he started in January 2011.
Bengel published about 200 original articles and reviews in scientific journals, as well as 20 book chapters. Bengel"s main research focus is the application of noninvasive imaging techniques for the assessment of functional mechanisms in the body (especially in the cardiovascular system).
He advanced nuclear imaging techniques targeting blood flow, metabolism and autonomic nervous system of the heart. He also introduced novel techniques for imaging of gene expression and for tracking of stem cells in the heart.
Rapid translation of novel tests from research to patient care is at the center of his work, in order to facilitate early disease detection and to refine the choice of therapy.
Bengel holds or held the following positions in international scientific organisations: Associate Editor: European Heart Journal – Cardiovascular Imaging (since 2013), Nuclear Medicine (since 2010) Editorial board member: Journal of the American College of Cardiology (2011–2015), Circulation – Cardiovascular Imaging (since 2008), JACC – Cardiovascular Imaging (since 2007), Journal of Nuclear Medicine (since 2004), European Journal of Nuclear Medicine and Molecular Imaging (since 2004), Journal of Nuclear Cardiology (since 2004) President, Cardiovascular Council, Society of Nuclear Medicine and Molecular Imaging (SNMMI) (2009/2010) Chair, Cardiovascular Committee, European Association of Nuclear Medicine (EANM) (2004–2008) Chair, Working Group Nuclear Cardiology, Deutsche Gesellschaft für Kardiologie (DGK) (2006–2010) Fellow of the American Heart Association (2012) Board of directors, American Society of Nuclear Cardiology (ASNC) (2006–2010) and Deutsche Gesellschaft für Nuklearmedizin (DGN) (2013–2016) Chairman of the annual meeting of the Deutsche Gesellschaft für Nuklearmedizin (DGN) 2015 2002 – Tyco Healthcare Award and Brahms Award of the Deutsche Gesellschaft für Nuklearmedizin.
Member American Society Nuclear Cardiology, European Association Nuclear Medicine, Society Nuclear Medicine (Cardiovascular Young Investigator award 2000).