People

Mats Danielsson, Professor

Mats Danielsson received his MSc in Engineering Physics from KTH Royal Institute of Technology in Stockholm, Sweden in 1990. From then until 1996 he pursued research with the CPLEAR experiment at CERN, the European Facility for Nuclear Research in Geneva, Switzerland. He received his Ph.D. 1996 with the thesis titled First Direct Measurement of T-violation, based on the first direct measurement of violation of the Time symmetry. From 1996 to 1998 Mats Danielsson worked as a postdoc at Lawrence Berkeley National Laboratory, Berkeley, USA on research in detectors and integrated electronics for x-ray imaging in David Nygren’s group. In 1999 he co-founded Mamea Imaging AB and was the president for the company until 2004 when the first photon counting mammography system was CE approved and in use in several mammography departments. The company was sold to Sectra AB and later to Philips and Microdose mammography is today installed in over 40 countries. Togeher with Prof Anders Brahme Mats Danielsson later invented a new detector for portal imaging and verification of radiation therapy and co-founded C-RAD AB that is currently listed on the Stockholm NASDAQ OMX.  Mats Danielsson is currently sharing his time between KTH and Prismatic Sensors AB, a company commercializing a new technology for photon counting CT, based on research performed in the group. Mats Danielsson holds around 30 patents and is co-author of around 90 scientific articles in journals such as Nuclear Instruments and Methods, IEEE Transactions on Medical Imaging, Medical Physics, Physics Letter and Nature. He was twice chairman for the Imaging conference at the Royal Swedish Academy of Science sponsored by the Nobel Institute for Physics.

Karl Berggren, PhD student

I joined the group in March 2014 as an industrial PhD student in collaboration with Philips Healthcare. I received my MSc in Applied Physics and Electrical Engineering from Linköping University were I wrote my master's thesis at the AEgIS experiment at CERN, Geneva, Switzerland, with the title "A high sensitivity imaging detector for the study of the formation of (anti)hydrogen". The focus of my PhD is on spectral tomosynthesis, energy-resolved 3D X-ray imaging for mammography, covering technology, image quality and applications.

Hans Bornefalk, Researcher

Hans received his PhD from the Royal Institute of Technology in Stockholm with the thesis entitled Computer aided detection and novel mammography imaging techniques. He also holds a MSc in Engieering Physics from KTH and a MSc in Economics and Business Administration from Stockholm School of Economics. In addition to research, he has worked as a managment constultant and with business improvement in the medical imaging industry.

Han Chen, PhD student

Han Chen received his MSc in Optical Engineering from National University of Defense Technology, China. In 2012, he joined in Medical Imaging group as a PhD student and has been involved in the measurement of a novel high rate photon-counting ASIC. His PhD thesis focuses on optimization and evaluation of a spectral mammography system with this novel ASIC.

Fredrik Grönberg, PhD student

I joined the group in 2014 after having received my MSc in Engineering Physics from the Royal Institute of Technology in Stockholm with a thesis entitled Crowd Control of Nonlinear Systems. I spent the first year of my master's degree program in the track of applied mathematics at Ecole Polytechnique in Paris. My interests include control and estimation problems and my research is focused on reconstruction methods for photon counting spectral computed tomography.

Ben Huber, Researcher

Ben received his PhD from University of Zürich, Switzerland, where he worked on instrumentation and data analysis in gamma-ray astronomy. Before, he was a student at University of Giessen in Germany, Umeå Universitet in Sweden and the ISDC Data Center for Astrophysics in Switzerland. His current research focuses on the development of a photon-counting silicon-strip detector for spectral CT.

Xuejin Liu, PhD student

I joined in the group as a phD student from Aug 2012 and has been involved in the development of a novel pediatric CT with photon-counting detector. I came from the same lab with Cheng Xu in China and got my MSc in Biomedical Engineering from Xi'an JiaoTong University. Recently, my research focus is the measurements of silicon photon counting detector.

Wujun Mi, PhD student

Wujun Mi joined the group in 2011 as a PhD student, and his thesis is on the new x-ray optics fabrication and application in medical imaging. He received his MSc in Electrical Engineering from Harbin Institute of Technology, China. Now his work is focused on the fabrication of point-focusing lenses using e-beam lithography.

Peter Nillius, Researcher

Peter Nillius received his PhD from the Royal Institute of Technology in Stockholm with the thesis titled Image Analysis Using the Physics of Light Scattering. He also holds a MSc in Computer Science and Engineering from Linköping University and a MSc in Electrical Eng. and Applied Physics from Case Western Reserve University, USA. He has worked as a postdoctoral researcher at FORTH, Crete and as a consultant in the medical imaging industry.

Mats Persson, PhD student

I joined the group in 2010 by writing my diploma thesis entitled Reconstruction of spectral CT images. Having received my MSc in Engineering Physics from the Royal Institute of Technology in Stockholm in 2011, I am now continuing my work in the group as a PhD student. My research is focused on data processing and reconstruction methods for photon counting spectral computed tomography.

Martin Sjölin, PhD student

Martin joined the group in March 2013 after receiving his MSc in Engineering Physics from the Royal Institute of Technology with thesis entitled "On the Fundamental Limitations of Timing and Energy Resolution of Silicon Detectors in PET applications". His current research is mainly focused on developing novel imaging applications based on spectral photon counting detectors and image reconstruction techniques for spectral Computed Tomography (CT).

Cheng Xu, Postdoc

Cheng Xu joined the group as a phD student in 2008 and has been involved in the development of a novel photon-counting detector prototype for spectral CT. He received his MSc in Biomedical Engineering from Xi'an JiaoTong University in China. His research interests focus on the simulation and measurements of silicon photon-counting detectors

Moa Yveborg, PhD student

I joined the medical imaging group in 2008 to write my diploma thesis with the title Photon counting CT with silicon detectors. Early 2009 I recieved my MSc in Engineering Physics at the Royal Institute of Technology in Stockholm. After a couple of years working in the industry, I rejoined the group in 2010 to do my PhD. It is closely related to my diploma thesis and focuses on optimization of a pediatric photon counting CT with silicon detectors.

 

Past Sabbaticals in our Group

Professor Aldo Badano, FDA, Washington, USA

Professor Robert Nishikawa, University of Pittsburg, USA

Professor David Nygren, LBNL, Berkeley, USA