Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-2104 Wissenschaftlicher Artikel Deuflhard, Peter; Weiser, Martin; Seebass, Martin A new nonlinear elliptic multilevel FEM in clinical cancer therapy planning 2000 5 Comput. Vis. Sci. 3 115 120 Numerical Mathematics OPUS4-2166 Wissenschaftlicher Artikel Gellermann, Johanna; Wust, Peter; Stalling, Detlev; Seebass, Martin; Nadobny, Johanna; Beck, Rudolf; Hege, Hans-Christian; Deuflhard, Peter; Felix, Roland Clinical evaluation and verification of the hyperthermia treatment planning system hyperplan 2000 11 Int J Radiat Oncol Biol Phys 47 4 1145 1156 Numerical Mathematics OPUS4-596 misc Seebass, Martin; Beck, Rudolf; Gellermann, Johanna; Nadobny, Jacek; Wust, Peter Electromagnetic phased arrays for regional hyperthermia -- optimal frequency and antenna arrangement In this paper we investigate the effects of the three-dimensional arrangement of antennas and frequency on temperature distributions that can be achieved in regional hyperthermia using an electromagnetic phased array. We compare the results of power-based and temperature-based optimization. Thus we are able to explain the discrepancies between previous studies favouring more antenna rings on the one hand and more antennas per ring on the other hand. We analyze the sensitivity of the results with respect to changes in amplitudes and phases as well as patient position. This analysis can be used for different purposes. First, it provides additional criteria for selecting the optimal frequency. Second, it can be used for specifying the required phase and amplitude accuracy for a real phased array system. Furthermore, it may serve as a basis for technological developments in order to reduce both types of sensitivities described above. 2000 urn:nbn:de:0297-zib-5961 ZIB Allgemein OPUS4-595 misc Stalling, Detlev; Seebass, Martin; Zöckler, Malte; Hege, Hans-Christian Hyperthermia Treatment Planning with HyperPlan - User's Manual HyperPlan is a software system for performing 3D-simulations and treatment planning in regional hyperthermia. It allows the user to understand the complex effects of electromagnetic wave propagation and heat transport inside a patient's body. Optimized power amplitudes and phase settings can be calculated for the BSD radiowave applicators Sigma 60 and Sigma 2000 (eye-applicator). HyperPlan is built on top of the modular, object-oriented visualization system Amira. This system already contains powerful algorithms for image processing, geometric modelling and 3D graphics display. HyperPlan provides a number of hyperthermia-specific modules, allowing the user to create 3D tetrahedral patient models suitable for treatment planning. In addition, all numerical simulation modules required for hyperthermia simulation are part of HyperPlan. This guide provides a step-by-step introduction to hyperthermia planning using HyperPlan. It also describes the usage of the underlying visualization system Amira. 2000 urn:nbn:de:0297-zib-5957 ZIB Allgemein OPUS4-2081 Konferenzveröffentlichung Deuflhard, Peter; Hege, Hans-Christian; Seebass, Martin Grönemeyer, W. Progress Towards a Combined MRI Hyperthermia System 2000 Proc. Second Int. Congress HIGH CARE 2000, Bochum Numerical Mathematics OPUS4-575 misc Deuflhard, Peter; Hege, Hans-Christian; Seebass, Martin Progress Towards a Combined MRI/Hyperthermia System Regional hyperthermia, a clinical cancer therapy, is the main topic of the Sonderforschungsbereich Hyperthermia: Scientific Methods and Clinical Applications'' at Berlin. In recent years, technological improvements towards a better concentration of heat to the desired target region have been achieved. These include a rather sophisticated integrated software environment for therapy planning and a new hyperthermia applicator. In a next step, a detailed closed loop monitoring of the actual treatment is to be developed. For this purpose the hyperthermia applicator is combined with an MRI system, which will allow to check the positioning of the patients and to measure individual blood perfusion as well as the 3D temperature distribution. The measurements will then be employed for an on-line control of the whole treatment. In this intended setting, new fast feedback control algorithms will come into play. 2000 urn:nbn:de:0297-zib-5755 ZIB Allgemein