Willi A. Calendar

from Wikipedia, the free encyclopedia

Willi Alfred Kalender (born August 1, 1949 in Thorr ) is a German physicist and owner of the Institute for Medical Physics at the Friedrich-Alexander University Erlangen - Nuremberg . He is considered to be the inventor of spiral computed tomography . He is also a Fellow of the American Association of Physicists in Medicine and an honorary fellow of the UK Institute of Radiology.

education

Willi Kalender began studying physics and mathematics at the University of Bonn, Germany. He received his Masters in Medical Physics from the University of Wisconsin in 1974 and received his PhD from the same in 1979. In 1988 he completed his habilitation at the University of Tübingen, Germany.

Live and act

Calendar studied mathematics and physics in Bonn and medical physics at the University of Wisconsin , where he received his doctorate in 1979. He completed his habilitation in Tübingen in 1988 . From 1976 to 1995 he worked for Siemens AG in Erlangen , since then he has headed the chair for medical physics at the Friedrich-Alexander-Universität Erlangen-Nürnberg . Since 1991 he also taught as an associate professor at the University of Wisconsin and from 1993 to 1995 as a private lecturer at the Technical University of Munich . He is a member of the Board of Directors of the American Society for Medical Physics. He was also the managing director of PET-Net GmbH, which manufactured radiopharmaceuticals for positron emission tomography . Calendar currently holds 15 patents and has published over 700 scientific papers.

Career

From 1979 to 1995, Dr. Calendar in a research laboratory of Siemens Medical Systems in Erlangen, Germany. From 1988 to 1995 he was appointed head of the Medical Physics Department. Since 1992 he has been visiting professor of medical physics at the University of Wisconsin. In 1995 he became a professor and chair holder at the newly founded Institute for Medical Physics at the Friedrich-Alexander University Erlangen-Nuremberg, Germany. In 1999 he was appointed visiting professor in the Radiology Department at Stanford University, Stanford, California, USA.

Willi A. Kalender did research mainly in the field of diagnostic imaging. The development and introduction of volumetric spiral computed tomography was the focus of his work. The combination of slip ring technology, which enabled permanent rotation, allowed a considerable reduction in the examination time and led to the development of new applications, such as the cardiac phase-specific display, which is still used today in computed tomography of the heart . The development of the world's first Dual Energy CT (DECT) in 1983, Metal Artifact Reduction (MAR) in 1987 and a variety of dose-reducing approaches are further examples of his research results.

Other fields of research were radiation protection and the development of quantitative diagnostic procedures, for example the assessment of osteoporosis, lung and heart diseases. At the moment, Willi Kalender's research is focused on an efficient breast scanner system to improve the detection of early breast cancer.

During his career, Willi Kalender has founded several university spin-offs to channel scientific results into products and small businesses. Willi Kalender has received a number of awards in recognition of his contributions to medical imaging.

Selected honors and prizes

Calendar was u. a. Awarded the European Latsis Prize by the European Science Foundation. In 2008 he received the X-ray plaque from the city of Remscheid . In 2009, he was from the RWTH Aachen , the honorary doctorate and by the Bavarian Society of Radiology, the Grashey awarded medal. He has also been a member of the Leopoldina since 2009 . In 2016 he was elected to the National Academy of Engineering .

  • 2002 - FAAPM, Honorary Membership in the American Association of Physicists in Medicine (AAPM)
  • 2004 - Federal Cross of Merit of the Federal Republic of Germany
  • 2007 - European Latsis Prize 2007 from the European Science Foundation (ESF)
  • 2008 - Roentgen plaque from the city of Remscheid (WC Röntgen's birthplace), Germany
  • 2009 - Dr. med. hc (honorary doctorate) awarded by RWTH Aachen, Germany
  • 2009 - Honorary member of the European Society of Radiology (ESR)
  • 2009 - Selected member of the German Academy of Sciences Leopoldina
  • 2009 - William D. Coolidge Award from the American Association of Physicists in Medicine (AAPM)
  • 2010 - Ziedses des Plantes Medal from the German Society for Neuroradiology
  • 2011 - Dr. med. hc (honorary doctorate) awarded by the University of Zurich, Switzerland
  • 2012 - FBIR, Honorary Membership in the British Institute of Radiology (BIR), England
  • 2013 - DGOOC Pauwels Medal
  • 2016 - Selected member of the National Academy of Engineering (NAE), USA

Publications

(a total of 954 publications, including 283 original scientific papers; with an h-index of 65 / ISI-Web of Knowledge)

Selected publications

  • WA Calendar, W. Seissler, E. Klotz, P. Vock: Spiral volumetric CT with single-breath-hold technique, continuous transport, and continuous scanner rotation. In: Radiology. 176, 1990, pp. 181-183.
  • WA Calendar: X-ray Computed Tomography. In: Phys Med Biol. 51, 2006, pp. R29-R43
  • WA Calendar, Y. Kyriakou: Flat-detector computed tomography (FD-CT). In: Eur Rad. 17 (11), 2007, pp. 2767–2779.
  • D. Ertel, T. Pflederer, S. Achenbach, WA Calendar: Real-time determination of the optimal re-construction phase to control ECG pulsing in spiral cardiac CT. In: Physica Medica. 25 (3), 2009, pp. 122-127.
  • D. Kolditz, Y. Kyriakou, WA Calendar: Volume-of-interest (VOI) imaging in C-arm flat-detector CT for high image quality at reduced dose. In: Med. Phys. 37 (6), 2010, pp. 2719-2730.
  • M. Weigel, S. Vollmar, WA Calendar: Spectral optimization for dedicated breast CT. In: Med Phys. 38 (1), 2011, pp. 114-124.
  • WA Calendar: High-resolution spiral CT of the breast at very low dose: concept and feasibility considerations. In: Eur Radiol. 22 (1), Jan 2012, pp. 1-8.
  • M. Beister, D. Kolditz, WA Calendar: Iterative reconstruction methods in X-ray CT. In: Eur J of Med Phys. 28, 2012, pp. 94-108.
  • W. Chen, D. Kolditz, M. Beister, R. Bohle, WA Calendar: Fast on-site Monte Carlo tool for dose calculations in CT applications. In: Med Phys. 39 (6), 2012, pp. 2985-2996.
  • WA Calendar, P. Deak, M. Kellermeier, M. van Straten, SV Vollmar: Application- and patient size-dependent optimization of x-ray spectra for CT. In: Med. Phys. 36, 2009, pp. 993-1007.
  • F. Lück, D. Kolditz, M. Hupfer, WA Calendar: Effect of shaped filter design on dose and image quality in breast CT. In: Phys. Med. Biol. 58 (21), 2013, pp. 4205-4223.
  • WA Calendar: Can in x-ray computed tomography. In: Phys Med Biol. 59, 2014, pp. R129-R150
  • WA Calendar, D. Kolditz, C. Steiding, V. Ruth, F. Lück, AC Rößler, E. Wenkel: Technical feasibility proof for high-resolution low-dose photon-counting CT of the breast. In: Eur Radiol. 2016. doi: 10.1007 / s00330-016-4459-3
  • Computed tomography. Fundamentals, System Technology, Image Quality, Applications. 3rd, revised. Edition. Publicis, Erlangen 2011, ISBN 978-3-89578-317-3 .

Web links

Individual evidence

  1. ↑ Honorary doctorates from the University of Zurich 2011. (PDF; 168 kB) University of Zurich , April 30, 2011, p. 8 , accessed on February 10, 2013 .
  2. ↑ DGOOC - Pauwels Medal. In: dgooc.de. dgooc, 2020, accessed on August 14, 2020 .
personal data
SURNAME Calendar, Willi A.
ALTERNATIVE NAMES Calendar, Willi Alfred
BRIEF DESCRIPTION German physicist, medical physicist, inventor and scientist
DATE OF BIRTH August 1, 1949
PLACE OF BIRTH Torr