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  • Department of Radiology
Department of Radiology / Dr. Martin Krämer

Dr. rer. nat. Martin Krämer
Medizinische Physik / IDIR,
wissenschaftlicher Mitarbeiter
Philosophenweg 3
07743 Jena

phone: +49 3641 9-390731
fax: +49 3641 9-390728

Teaching

I'm always looking for motivated students who are interested in an internship or thesis position in our group. We offer topics for students of physics, engineering, computer science and medicine. All projects and topics are strongly related to current research activities. 

Current Bachelor and Master topics can be found under Student Positions.

 

Research Interests

  • Ultra-short echo-time (UTE) imaging
  • Non-Cartesian imaging
  • Sequence development for human 1.5T to 3T MRI systems (Siemens IDEA)
  • Sequence development for small animal 9.4T MRI systems (Bruker ParaVision 6)
  • Image reconstriction
  • Real-time MRI
  • Python framework development
  • Algorithm development
  • Tendons and ligaments
 

Honors & Awards

May 2017 ISMRM Merit Award Magna Cum Laude
Cardiac 4D phase-contrast MRI at 9.4 T using self-gated ultra-short echo time (UTE) imaging
Scientific Meeting and Exhibition of the International Society of Magnetic Resonance in Medicine, Honolulu, Hawaii, USA
Sep 2015 Publication price of the Zeitschrift für Medizinische Physik for the best scientific article in the year 2014
Jun 2014 Young Investigator Award 2014 of the German Röntgen Society (Deutsche Röntgengesellschaft)
May 2014     ISMRM Merit Award Magna Cum Laude
Self-gated cardiac Cine MRI of the rat on a clinical 3T MRI system
Scientific Meeting and Exhibition of the International Society of Magnetic Resonance in Medicine, Milan, Italy
May 2014 ISMRM Merit Award Magna Cum Laude
Retrospective Reconstruction of Cardiac Cine Images from Golden-Ratio-Radial MRI using 1D Navigators
Scientific Meeting and Exhibition of the International Society of Magnetic Resonance in Medicine, Milan, Italy
May 2013 ISMRM Merit Award Magna Cum Laude
Robust estimation of true k-space center position for radial center-out trajectories
Scientific Meeting and Exhibition of the International Society of Magnetic Resonance in Medicine, Salt Lake City, Utah, USA
Jan 2013 Doctoral scholarship by the Carl-Zeiss-Foundation
 

Curriculum Vitae

since 2016 Post-Doc at the Medical Physics Group
2013 - 2015 Carl-Zeiss-Foundation doctoral scholarship holder
2011 - 2012      Research associate at the Medical Physics Group
Oct 2010 Diplom degree in Physics (M.Sc. equivalent)
Thesis Title: Functional Magnetic Resonance Imaging using PROPELLER-EPI
2005 - 2010 Study in Physics at the Friedrich Schiller Universität Jena
 

Publications

NM Brisson, LAN Krahl, M Krämer, JR Reichenbach, GN Duda (2023). Eighteen-Month Changes in Physical Activity, Body Weight, Quadriceps Strength, and Gait Biomechanics during the COVID-19 Pandemic. Medicine and Science in Sports and Exercise (55), 1366-1374

W-T Zhao, K-H Herrmann, R Sibgatulin, A Nahardani, M Krämer, B Heitplatz, V van Marck, S Reuter, JR Reichenbach, V Hoerr (2023). Perfusion and T2 Relaxation Time as Predictors of Severity and Outcome in Sepsis-Associated Acute Kidney Injury: A Preclinical MRI Study. Journal of magnetic resonance imaging: JMRI (58), 1954-1963

S Gräger, R Pfirschke, M Lorenz, D Vilser, M Krämer, H-J Mentzel, K Glutig (2023). Lung ultrasound in children and adolescents with long-term effects of COVID-19: Initial results. Frontiers in Pediatrics (11), 1112881

P-C Krueger, M Krämer, T Benkert, S Ertel, U Teichgräber, M Waginger, H-J Mentzel, K Glutig (2023). Whole-body diffusion magnetic resonance imaging with simultaneous multi-slice excitation in children and adolescents. Pediatric Radiology (53), 1485-1496

M Krämer, M Ingwersen, U Teichgräber, F Güttler (2023). Added value of chest CT in a machine learning-based prediction model to rule out COVID-19 before inpatient admission: A retrospective university network study. European Journal of Radiology (163), 110827

K Glutig, P-C Krüger, T Oberreuther, MD Nickel, U Teichgräber, M Lorenz, H-J Mentzel, M Krämer (2022). Preliminary results of abdominal simultaneous multi-slice accelerated diffusion-weighted imaging with motion-correction in patients with cystic fibrosis and impaired compliance. Abdominal Radiology (New York)

K Glutig, P-C Krüger, T Oberreuther, U Teichgräber, M Lorenz, H-J Mentzel, M Krämer (2022). A novel free-breathing abdominal RAVE T2/T1 hybrid MRI sequence in patients with cystic fibrosis: Preliminary results. European Journal of Radiology (154), 110454

M Aleksiev, M Krämer, NM Brisson, MB Maggioni, GN Duda, JR Reichenbach (2022). High-resolution CINE imaging of active guided knee motion using continuously acquired golden-angle radial MRI and rotary sensor information. Magnetic Resonance Imaging (92), 161–168

JP Fouquet, D Sikpa, Ré Lebel, R Sibgatulin, M Krämer, K-H Herrmann, A Deistung, L Tremblay, JR Reichenbach, M Lepage (2022). Characterization of microparticles of iron oxide for magnetic resonance imaging. Magnetic Resonance Imaging (92), 67-81

NM Brisson, M Krämer, LAN Krahl, A Schill, JR Reichenbach, GN Duda (2022). A novel multipurpose device for guided knee motion and loading during dynamic magnetic resonance imaging. Zeitschrift fur Medizinische Physik, Online ahead of print

K Glutig, H-J Mentzel, FH Prüfer, U Teichgräber, MM Obmann, M Krämer (2021). RAVE-T2/T1 - Feasibility of a new hybrid MR-sequence for free-breathing abdominal MRI in children and adolescents. European Journal of Radiology (143), 109903

MB Maggioni, M Krämer, JR Reichenbach (2021). Optimized gradient spoiling of UTE VFA-AFI sequences for robust T1 estimation with B1-field correction. Magnetic Resonance Imaging (82), 1-8

A Nahardani, S Leistikow, K Grün, M Krämer, K-H Herrmann, A Schrepper, C Jung, S Moradi, PC Schulze, L Linsen, JR Reichenbach, V Hoerr, M Franz (2021). Pulmonary Arteriovenous Pressure Gradient and Time-Averaged Mean Velocity of Small Pulmonary Arteries Can Serve as Sensitive Biomarkers in the Diagnosis of Pulmonary Arterial Hypertension: A Preclinical Study by 4D-Flow MRI. Diagnostics (Basel, Switzerland) (12), 58

M Krämer, MR Kollert, NM Brisson, MB Maggioni, GN Duda, JR Reichenbach (2020). Immersion of Achilles tendon in phosphate-buffered saline influences T1 and T2* relaxation times: An ex vivo study. NMR in Biomedicine, e4288

M Krämer, B Herzau, JR Reichenbach (2020). Segmentation and visualization of the human cranial bone by T2* approximation using ultra-short echo time (UTE) magnetic resonance imaging. Zeitschrift fur Medizinische Physik (30), 51–59

M Krämer, MB Maggioni, NM Brisson, S Zachow, U Teichgräber, GN Duda, JR Reichenbach (2019). T1 and T2* mapping of the human quadriceps and patellar tendons using ultra-short echo-time (UTE) imaging and bivariate relaxation parameter-based volumetric visualization. Magnetic Resonance Imaging (63), 29-36

K Moll, A Gussew, M Nisser, S Derlien, M Krämer, JR Reichenbach (2018). Comparison of metabolic adaptations between endurance- and sprint-trained athletes after an exhaustive exercise in two different calf muscles using a multi-slice 31P-MR spectroscopic sequence. NMR in Biomedicine (31), e3889

M Cleve, M Krämer, A Gussew, JR Reichenbach(2017). Difference optimization: Automatic correction of relative frequency and phase for mean non-edited and edited GABA (1)H MEGA-PRESS spectra. JMR (279), 16–21

M Krämer, AG Motaal, K-H Herrmann, B Löffler, JR Reichenbach, GJ Strijkers, V Hoerr (2017). Cardiac 4D phase-contrast CMR at 9.4 T using self-gated ultra-short echo time (UTE) imaging. J Cardiovasc Magn Reson (19), 39

K-H Herrmann, M Krämer, JR Reichenbach (2016). Time Efficient 3D Radial UTE Sampling with Fully Automatic Delay Compensation on a Clinical 3T MR Scanner. PLoS One (11), e0150371

M Krämer, J Biermann, JR Reichenbach (2015). Intrinsic Correction of System Delays for Radial Magnetic Resonance Imaging. Magn Reson Imaging (33), 491–496

K-H Herrmann, C Gärtner, D Güllmar, M Krämer, JR Reichenbach (2014). 3D printing of MRI compatible components: Why every MRI research group should have a low-budget 3D printer. Med Eng Phys (36), 1373–1380

M Krämer, JR Reichenbach (2014). High resolution T2(*)-weighted Magnetic Resonance Imaging at 3 Tesla using PROPELLER-EPI. Z Med Phys (24), 164–173

M Krämer, K-H Herrmann, J Biermann, S Freiburger, M Schwarzer, JR Reichenbach (2014). Self-gated cardiac Cine MRI of the rat on a clinical 3T MRI system. NMR Biomed (28), 162–167

M Krämer, K-H Herrmann, J Biermann, JR Reichenbach (2013). Retrospective reconstruction of cardiac cine images from golden-ratio radial MRI using one-dimensional navigators. J Magn Reson Imaging (40), 413–422

M Krämer, TH Jochimsen, JR Reichenbach (2012). Functional magnetic resonance imaging using PROPELLER-EPI. Magn Reson Med (68), 140–151

Department of Radiology