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Gemmel
Alexander Gemmel, Mainz DE
| Patent application number | Description | Published |
|---|---|---|
| 20110027853 | Phantom for the experimental in-vitro validation of radiation procedures under the influence of motion, taking into account the biological effective dose - A phantom device for in-vitro validation of radiation procedures under motion influence in consideration of an effective biological dose includes a phantom having a first biological detector with a first biological sample. The first biological sample includes a plurality of culturing and irradiation elements. Each of the culturing and irradiation elements are provided with a respective biological sub-sample so that the first biological detector is configured as a spatially resolving biological detector. A first motion device is configured to move the first biological detector so as to simulate a motion of a target volume. | 02-03-2011 |
Alexander Gemmel, Erlangen DE
| Patent application number | Description | Published |
|---|---|---|
| 20100301235 | METHOD AND APPARATUS FOR IRRADIATION OF A MOVING TARGET VOLUME - A method of determining an actual, especially an actual effective, radiation dose distribution of a moving target volume includes detecting first and further positions of volume elements of the target volume in a first and at least one further motional state of the moving target volume, determining transformation parameters by transformation of the first positions into the further positions, irradiating the moving target volume in accordance with an irradiation plan which comprises a plurality of raster points to be irradiated, wherein during the irradiation of a raster point it is detected which of the motional states is occupied by the moving target volume, assigning raster points to subirradiation plans and determining the actual effective dose for each of the plurality of volume elements, in each case from contributions from the raster points of the subirradiation plans using the transformation parameters. Calculation and application of correction parameters which compensate for changes, caused by movement, to the position of the Bragg maximum and to the biologically effective dose applied. | 12-02-2010 |
Alfred Gemmel, Kalchreuth DE
| Patent application number | Description | Published |
|---|---|---|
| 20090018225 | High processing tepmerature foaming polymer composition - A foaming composition includes a polymer having a melting temperature above 250° C., and an organic salt as chemical foaming agent having a decomposition temperature above the melting point of the polymer, where the organic salt is selected from the group of citrate derivatives and tartrate derivatives, or a mixture thereof. | 01-15-2009 |
| 20090176901 | Process for the production of a moulding composed of foamed polytetrafluoroethylene - A process for the production of a moulding composed of foamed polytetrafluoroethylene by means of an extruder, includes introducing a foaming agent, which brings about foaming, into the polytetrafluoro-ethylene, where the extruder used includes a commercially available extruder, to which a thermoplastically processable, fusible polytetrafluoroethylene is fed, the polytetrafluoroethylene is fed to the extruder together with a foaming agent which has chemical action and which has a decomposition temperature of at least 320° C., and after its discharge from the extruder, the moulding is drawn off in the direction of production without any further measures relating to the foaming procedure. | 07-09-2009 |
| 20090206502 | High processing temperature foaming polymer composition - A foaming composition comprising a melt processible fluoropolymer, and a chemical foaming agent, where the chemical foaming agent is ammonium polyphosphate. | 08-20-2009 |
| 20100252947 | HIGH PROCESSING TEMPERATURE FOAMING POLYMER COMPOSITION - A foaming composition comprising a melt processible fluoropolymer, and a chemical foaming agent, where the chemical foaming agent is ammonium polyphosphate. | 10-07-2010 |