Alexander Fyrdahl

Alexander Fyrdahl

Research Infrastructure Specialist
Telephone: +46852482713
Visiting address: Eugeniavägen 3, Karolinska universitetssjukhuset, NKS A8:01, 17176 Stockholm
Postal address: K1 Molekylär medicin och kirurgi, K1 MMK Klinisk fysiologi, 171 76 Stockholm

About me

  • As a medical physicist specializing in cardiovascular magnetic resonance imaging, my primary research interests include real-time and motion-robust imaging, three-dimensional whole-heart imaging, and non-Cartesian trajectory design. Additionally, I am dedicated to advancing the clinical application of cutting-edge imaging techniques through the development of online reconstruction and inline analysis methods.

    Upon completing my doctorate at KI, where I defended my thesis titled "Applications of the Golden-Angle in Cardiovascular MRI, " I proceeded to spend two years as a postdoctoral fellow at the University of Michigan. There, I collaborated with Associate Professor Nicole Seiberlich at the Michigan Institute for Imaging Technology and Translation (MIITT). My work focused on creating methods for real-time cardiovascular imaging at low-field (0.55T) MRI scanners and contributing to lab-wide efforts on Cardiac Magnetic Resonance Fingerprinting (MRF). I developed a method for reconstructing cMRF images directly on the scanner within a clinically viable timeframe, utilizing AI-assisted Bloch equation simulations and GPU acceleration.

    Since 2022, I have returned to KI and joined the Clinical Physiology research group within the Department of Molecular Medicine and Surgery. My current work revolves around motion-robust cardiovascular imaging and parametric mapping using Cardiac MRF.

Selected publications


All other publications



  • Research Infrastructure Specialist, Department of Molecular Medicine and Surgery, Karolinska Institutet, 2023-

Degrees and Education

  • Degree Of Doctor Of Philosophy, Department of Molecular Medicine and Surgery, Karolinska Institutet, 2020
  • Degree of Master, Medical Radiation Physics, Compressed Sensing for Time-Resolved Golden-Angle Radial Cardiac Magnetic Resonance Imaging, Department of Physics, Stockholm University, 2016

Visiting research fellowships

  • Postdoctoral Fellow, University of Michigan, Postdoctoral fellow at the Michigan Institute of Imaging Technology and Translation (MIITT) working on Magnetic Resonance Fingerprinting and real-time cardiac imaging at low-field.,, 2020-2022

Journal reviewing

  • Magnetic Resonance in Medicine, Wiley, Anonymous peer review, 2021
  • Journal of Magnetic Resonance in Medicine, Wiley, Anonymous peer review, 2020

News from KI

Events from KI