Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Martin Seebaß"'
Autor:
Martin Seebaß, P.M. Schlag, Thomas Lange, Thomas Wenckebach, Hans Lamecker, Michael Hünerbein, Sebastian Eulenstein
Publikováno v:
International Congress Series. 1281:768-772
The exact localization of intrahepatic vessels in relation to a tumour is an important issue in oncological liver surgery. For computer-assisted preoperative planning of surgical procedures high quality vessel models are required. In this work we sho
Autor:
Peter Wust, Johanna Gellermann, Roland Felix, Waldemar Wlodarczyk, Hildegard Ganter, Martin Seebass, Jacek Nadobny, H. Fähling
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 61:267-277
Purpose This study investigates the feasibility and accuracy of noninvasive magnetic resonance (MR) monitoring for a system that includes a multiantenna applicator for part-body hyperthermia (SIGMA-Eye applicator, BSD-2000/3D) and a 1.5 Tesla MR tomo
Autor:
Martin Seebass, H. Fähling, Beate Rau, Oppelt A, R. Felix, Peter M. Schlag, Jacek Nadobny, Peter Wust, Waldemar Wlodarczyk, Paul F. Turner, B. Hildebrandt, J. Gellermann
Publikováno v:
RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 176:363-374
Objective of this study is the integration of a multiantenna applicator for part-body hyperthermia (BSD 2000/3D) in a 1.5 T MR-tomograph (Siemens Magnetom Symphony) in order to perform noninvasive MR monitoring in real time to increase safety and eff
Publikováno v:
Magnetic Resonance Imaging. 20:65-76
In order to assess thermal response to RF exposure during MR procedures at the tissue level, simple analytical solutions to the non-stationary Pennes’ bio-heat equation were obtained using the Green’s function approach. Two thermal models appropr
Autor:
Waldemar Wlodarczyk, H. Fähling, Jacek Nadobny, Martin Seebass, Peter Wust, Peter Deuflhard, Johanna Gellermann
Publikováno v:
Medical Physics. 28:1793-1805
Objectives: In multiantenna applicators such as the SIGMA-60 or SIGMA-Eye, which consist of 4 or 12 pairs of antennas shunt to 4 or 12 amplifiers (“antenna couplets”), phases and amplitudes in the feed points of these antennas under certain condi
Publikováno v:
International Journal of Hyperthermia. 17:321-336
This paper investigates the effects of the three-dimensional arrangement of antennae and frequency on temperature distributions that can be achieved in regional hyperthermia using an electromagnetic phased array. It compares the results of power-base
Autor:
Waldemar Wlodarczyk, Peter Wust, H. Fähling, J. Berger, Martin Seebass, Rudolf Beck, Jacek Nadobny, Werner Hoffmann
Publikováno v:
Medical Physics. 27:2565-2579
In this paper we examine the SIGMA-Eye hyperthermia applicator (BSD Medical Corp., Salt Lake City, Utah 84119) with respect to the control of electric field distributions. This applicator is equipped with 12 pairs of antennas fed by 12 amplifiers, al
Publikováno v:
Computing and Visualization in Science. 3:115-120
In the clinical cancer therapy regional hyperthermia certain nonlinear perfusion effects inside and outside the tumor seem to play a significant role. A stationary model of such effects leads to a nonlinear Helmholtz term within an elliptic boundary
Publikováno v:
Annals of the New York Academy of Sciences. 858:36-46
We describe an optimization process specially designed for regional hyperthermia of deep seated tumors in order to achieve desired steady-state temperature distributions. A nonlinear three-dimensional heat-transfer model based on temperature-dependen
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:1759-1766
In recent years, the finite-difference time-domain (FDTD) method has found numerous applications in the field of computational electromagnetics. One of the strengths of the method is the fact that no elaborate grid generation specifying the content o