Contour collimator for radiotherapy
AssigneeDeutsches Krebsforschungszentrum Stiftung des Offentlichen Rechts
InventorsOtto Pastyr, Wolfgang Schlegel, Karl-Heinz Hover, Wolfgang Maier-Borst
Life of this patent
Estimating the term…
Abstract
A contour collimator has a plurality of plate-shaped diaphragm elements movably arranged with respect to each other in a guiding block to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and at least one drive for moving the diaphragm elements. A drive is associated with each diaphragm element with the drives of a group of diaphragm elements being substantially adjacent, and a driving transmission arranged between each drive and the associated diaphragm element.
Claims19
A contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and comprising at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and a driving transmission of its own is provided between each drive and the associated diaphragm element, wherein the drives are arranged substantially in a semi-circle.
A contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and comprising at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and a driving transmission of its own is provided between each drive and the associated diaphragm element, wherein each driving transmission has a flexible but tension-resistant and pressure-resistant power-transmitting element one end of which is connected with the associated diaphragm element and the other end of which is connected with the associated drive and which is supported in a moving guide in translatorily movable fashion, and wherein the moving guides are arranged substantially side by side in a moving guide block and have moving guide gaps diverging in fan-shaped and bent fashion, in which one power-transmitting element is accommodated in translatorily movable fashion.
A contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and comprising at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and a driving transmission of its own is provided between each drive and the associated diaphragm element, wherein two superposed planes of drive arrangements are associated with each moving guide block, on power-transmitting element, accommodated in adjacent moving guides, being applied by two superposed drives each.
A contour collimator for radiotherapy, comprising a plurality of plate-shaped diaphragm elements provided in a guiding block and movably arranged with respect to one another to form a contour diaphragm for a radiation beam emitted by a radiation source towards the collimator, and comprising at least one drive for moving the diaphragm elements, wherein a drive of its own is associated with each diaphragm element, the drives of a group of diaphragm elements are arranged substantially adjacent to one another, and a driving transmission of its own is provided between each drive and the associated diaphragm element, wherein at least one of the diaphragm elements located in the region of the central middle ray of the radiation beam is provided with at least one thickening rib extending in the translational direction.
Dependencies are inferred from the claim text.