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PAPERS

12/08/2011

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balzano@itis-usa.org

 

Head Exposure System for a Human Provocation Study to Assess the Possible Influence of UMTS-Like Electromagnetic Fields on Cerebral Blood Circulation Using Near-Infrared Imaging

Hugo Lehmann, Laurent Pollara, Sonja Spichtig, Sven Kühn, and Martin Wolf, Bioelectromagnetics, Volume 33, Issue 2, pp. 124–133, February 2012. Online August 12, 2011

 
PAPERS

09/08/2011

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pasche@itis-usa.org

 

Treatment of Advanced Hepatocellular Carcinoma with Very Low Levels of Amplitude-Modulated Electromagnetic Fields

Frederico P. Costa, André Cosme de Oliveira, Roberto Meirelles, Marcel C.C. Machado, Tatiana Zanesco, Rodrigo Surjan, Maria Cristina Chammas, Manoel de Souza Rocha, Desiree Morgan, Alan Cantor, Jacquelyn Zimmerman, Ivan Brezovich, Niels Kuster, Alexandre Barbault, and Boris Pasche, British Journal of Cancer, Volume 105, Number 5, pp. 640–648, August 23, 2011. Online August 9

 
PAPERS

15/07/2011

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balzano@itis-usa.org

 

Children and Adults Exposed to Electromagnetic Fields at the ICNIRP Reference Levels: Theoretical Assessment of the Induced Peak Temperature Increase

Jurriaan F. Bakker, Margarethus M. Paulides, Esra Neufeld, Andreas Christ, Niels Kuster, Gerard C. van Rhoon, Physics in Medicine and Biology, Volume 56, Number 15, pp. 4967–4990, August, 2011, online July 19

 
Analysis of the Local Worst-Case SAR Exposure Caused by an MRI Multi-Transmit Body Coil in Anatomical Models of the Human Body
06/07/2011

Analysis of the Local Worst-Case SAR Exposure Caused by an MRI Multi-Transmit Body Coil in Anatomical Models of the Human Body

Esra Neufeld, Marie-Christine Gosselin, Manuel Murbach, Andreas Christ, Eugenia Cabot and Niels Kuster, Physics in Medicine and Biology, Volume 56, Number 15, pp. 4649–4659, August, 2011, online July 6


Multi-transmit coils can lead to an increase in whole-body and local SAR compared to conventional body coils excited in circular polarization. In this study, the maximum increase of SAR for three significantly different human anatomies was investigated numerically. The results demonstrate that the increase of SAR strongly depends on the anatomy. For the three models the wbSAR increased by a factor of up to 1.6 compared to conventional excitation and the psSAR by up to 13.4. For some locations the local averaged SAR goes up as much as 800 times. The ratio of the peak spatial SAR to the whole-body SAR increases by a factor of up to 47 and can reach values above 800. Due to the potentially much larger power deposition, additional, preferably patient-specific, considerations are necessary to avoid injuries by such systems.

The scientific and technical impact of the study can be summarized as:

  • The future of MRI is in multi-transmit systems. We investigated if addtional safety considerations will be needed to avoid potential hazards to patients
  • We documented worst-case increase of the overall peak spatial SAR as well as the local SAR enhancements
  • The study demonstrated that the safety concepts for conventional MR systems are not sufficient for this emerging technology and has identified patient-specific evaluations as the most promising strategy 
PAPERS

05/07/2011

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balzano@itis-usa.org

 

Estimation Formulas for the Specific Absorption Rate in Humans Exposed to Base Station Antennas

Marie-Christine Gosselin, Günter Vermeeren, Sven Kühn, Valpré Kellerman, Stefan Benkler, Tero M. I. Uusitupa, Wout Joseph, Azeddine Gati, Joe Wiart, Frans J. C. Meyer, Luc Martens, Toshio Nojima, Takashi Hikaje, Quirino Balzano, Andreas Christ, Niels Kuster, IEEE Transactions on Electromagnetic Compatibility, Volume 53, Issue 4, pp. 909–922, November 2011, online June 9

 
PAPERS

19/04/2011

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balzano@itis-usa.org

 

GPU-Based Simulation of 3D Blood Flow in Abdominal Aorta Using OpenFOAM

Ziemowit Malecha, Lukasz Miroslaw, Tadeusz Tomczak, Zbigniew Koza, Maciej Matyka, Wojciech Tarnawski, and Dominik Szczerba, in Archives of Mechanics, Volume 63, Issue 2, pp. 137–161, April 2011. Paper presented at 19th Polish National Fluid Dynamics Conference (KKMP), Poznan, Poland, September 5–9, 2010, online April 19, 2011

 
PAPERS

12/04/2011

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balzano@itis-usa.org

 

Sleep EEG Alterations: Effects of Different Pulse-Modulated Radio Frequency Electromagnetic Fields

Marc R. Schmid, Sarah P. Loughran, Sabine J. Regel, Manuel Murbach, Aleksandra Bratic Grunauer, Thomas Rusterholz, Alessia Bersagliere, Niels Kuster, and Peter Achermann, Journal of Sleep Research, Volume 21, Issue 1, pp. 50–58, February, 2012, online April 12, 2011

 
PAPERS

17/03/2011

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balzano@itis-usa.org

 

Estimation of Head Tissue-Specific Exposure from Mobile Phones Based on Measurements in the Homogeneous SAM Head

Marie-Christine Gosselin, Sven Kühn, Pedro Crespo-Valero, Emilio Cherubini, Marcel Zefferer, Andreas Christ, and Niels Kuster, Bioelectromagnetics, Volume 32, Issue 6, pages 493–505, September 2011, online March 17

 
PAPERS

02/03/2011

Contact
balzano@itis-usa.org

 

Manycore Stencil Computations in Hyperthermia Applications

Matthias Christen, Olaf Schenk, Esra Neufeld, Maarten Paulides, and Helmar Burkhart, “Manycore Stencil Computations in Hyperthermia Applications,” in “Scientific Computing with Multicore and Accelerators,” Jakub Kurzak, David A. Bader, and Jack Dongarra, Eds., CRC Press, Taylor & Francis Group, Boca Raton, FL, USA, 2011

 
 
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