Patent application number | Description | Published |
20090252292 | RADIATION THERAPY PLAN DOSE PERTURBATION SYSTEM AND METHOD - A method of determining a patient dose during or prior to therapy from an external radiation beam includes determining a dose distribution from a patient plan as delivered in a QA phantom at each appropriate beam angle and comparing the dose distribution determined from measurements or calculations to a corresponding treatment planning system (TPS) dose modeled distribution in the QA phantom and providing a correction distribution when applied to the TPS dose modeled distribution results in the dose distribution determined. The correction distribution may optionally be interpolated to non-measured points for each beam angle and geometrically projected toward the source of radiation through a volume that equals a dose volume of the TPS for a patient beam for each beam angle. The correction distribution is applied to the TPS patient dose volume for each beam angle for providing a corrected dose distribution in the patient. | 10-08-2009 |
20090297014 | SYSTEM FOR ASSESSING RADIATION TREATMENT PLAN SEGMENTATIONS - Segmentations used to describe structures to be treated by radiotherapy are evaluated by converting the segmentations into volume models and examining volume elements that are extra or missing in the volume model of the second segmentation with respect to the volume model of the first segmentation. This characterization of volume elements may be displayed graphically to show differences in segmentations for training or evaluation purposes and may be quantified by a metric method tallying volume elements as optionally weighted by distance from volume elements shared by the segmentation. | 12-03-2009 |
20100049549 | PATIENT-CUSTOMIZED MEDICAL TREATMENT EDUCATION SYSTEM AND METHODS - A system and methods for generating a patient-specific and treatment plan-specific educational media montage for radiation is provided. The montage provides a multi-media documentary containing data specific to the radiation therapy treatment of a particular patient, which is based upon the specific medical scenario for that patient. Information relating to the patient's expectations before, during and after treatment is included. DICOM RT files are converted by the system and utilized for providing an educational documentary that is customizable to each patient. | 02-25-2010 |
20100195793 | RADIATION THERAPY USING BEAM MODIFIERS PLACED AGAINST A PATIENT'S SKIN - A method for making a beam modifier to be used in radiation therapy includes defining a region of interest in a patient that is to receive radiation, with the region of interest being defined using an anatomy coordinate system format. Radiation treatment parameters are defined for the defined region of interest, and correspond to an initial type beam modifier to be coupled to an output of a radiation device. Design data on a beam modifier to be placed on the skin of the patient is generated, with the design data being based on the defined region of interest and the defined radiation treatment parameters for the defined region of interest. The design data is in the same anatomy coordinate system format as the defined region of interest that is to receive the radiation. The design data is treated as a new region of interest, and the radiation dosage to be applied to the new region of interest is re-calculated while taking into account the beam modifier to be placed on the skin of the patient. | 08-05-2010 |
20150087879 | BENCHMARK SYSTEM FOR RADIATION THERAPY PLANNING - A system for evaluating radiation treatment planning generates a fictitious treatment dose matrix with a quality of dose placement beyond that achievable with physically realizable radiation therapy machines. Such a fictitious treatment dose matrix provides an objective measure that is readily tailored to different clinical situations, and although unattainable, thereby provides a benchmark allowing evaluation of radiation plan goals and the radiation plans between different multiple clinical situations and individuals. | 03-26-2015 |
Patent application number | Description | Published |
20120222363 | METHODS OF FORMING POLYCRYSTALLINE TABLES AND POLYCRYSTALLINE ELEMENTS AND RELATED STRUCTURES - Methods of forming a polycrystalline table comprise disposing a plurality of particles comprising a superabrasive material, a substrate comprising a hard material, and a catalyst material in a mold. The plurality of particles is partially sintered in the presence of the catalyst material to form a brown polycrystalline table having a first permeability attached to an end of the substrate. The substrate is removed from the brown polycrystalline table and catalyst material is removed from the brown polycrystalline table. The brown polycrystalline table is then fully sintered to form a polycrystalline table having a reduced, second permeability. Intermediate structures formed during a process of attaching a polycrystalline table to a substrate comprising a substantially fully leached brown polycrystalline table. The substantially fully leached brown polycrystalline table comprises a plurality of interbonded grains of a superabrasive material. | 09-06-2012 |
20120222364 | POLYCRYSTALLINE TABLES, POLYCRYSTALLINE ELEMENTS, AND RELATED METHODS - Polycrystalline elements comprise a substrate and a polycrystalline table attached to an end of the substrate. The polycrystalline table comprises a first region of superabrasive material having a first permeability and at least a second region of superabrasive material having a second, lesser permeability, the at least second region being interposed between the substrate and the first region. Methods of forming a polycrystalline element comprise attaching a polycrystalline table comprising a first region of superabrasive material having a first permeability and at least a second region of superabrasive material having a second, lesser permeability to an end of a substrate, the at least a second region being interposed between the first region and the substrate. Catalyst material is removed from at least the first region of the polycrystalline table. | 09-06-2012 |
20120225253 | METHODS OF FORMING POLYCRYSTALLINE ELEMENTS AND STRUCTURES FORMED BY SUCH METHODS - Methods of forming a polycrystalline element comprise forming a polycrystalline table on a first substrate. Catalyst material may be removed from at least a portion of the polycrystalline table. The polycrystalline table and a portion of a first substrate attached to the polycrystalline table may be removed from a remainder of the first substrate. The portion of the first substrate may be attached to another substrate. Polycrystalline elements comprise a polycrystalline table attached to a portion of a first substrate on which the polycrystalline table was formed another substrate attached to the portion of the first substrate. | 09-06-2012 |
20130199856 | SHAPED CUTTING ELEMENTS FOR EARTH-BORING TOOLS AND EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS - Cutting elements for an earth-boring tool include a substrate base and a cutting tip. The cutting tip may include a first generally conical surface, a second, opposite generally conical surface, a first flank surface extending between the first and second generally conical surfaces, and a second, opposite flank surface. In some embodiments, the cutting tip includes a central axis that is not co-linear with a longitudinal axis of the substrate base. In some embodiments, the cutting tip includes a surface defining a longitudinal end thereof that is relatively more narrow in a central region thereof than in a radially outer region thereof. Earth boring tools include a body and a plurality of such cutting elements attached thereto, at least one cutting element oriented to initially engage a formation with the first or second generally conical surface thereof. Methods of drilling a formation use such cutting elements and earth-boring tools. | 08-08-2013 |
20140238753 | CUTTING ELEMENTS INCLUDING NON-PLANAR INTERFACES, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND METHODS OF FORMING CUTTING ELEMENTS - Cutting elements for earth-boring tools may comprise a substrate, a polycrystalline table comprising superhard material secured to the substrate at an end of the substrate, and a non-planar interface defined between the polycrystalline table and the substrate. The non-planar interface may comprise a cross-shaped groove extending into one of the substrate and the polycrystalline table and L-shaped grooves extending into the other of the substrate and the polycrystalline table proximate corners of the cross-shaped groove. Transitions between surfaces defining the non-planar interface may be rounded. Methods of forming cutting elements for earth-boring tools may comprise forming a substrate to have a non-planar end. The non-planar end of the substrate may be provided adjacent particles of superhard material to impart an inverse shape to the particles. The particles may be sintered to form a polycrystalline table, with a non-planar interface defined between the substrate and the polycrystalline table. | 08-28-2014 |
20140246251 | CUTTING ELEMENTS LEACHED TO DIFFERENT DEPTHS LOCATED IN DIFFERENT REGIONS OF AN EARTH-BORING TOOL AND RELATED METHODS - Earth-boring tools may comprise a body comprising a first region and a second region. The first region may be located closer to a rotational axis of the body than the second region. A first cutting element may be located in the first region and a second cutting element may be located in the second region. A first polycrystalline table of the first cutting element may be substantially free of catalyst material to a first depth and a second polycrystalline table of the second cutting element may be substantially free of catalyst material to a second, greater depth. | 09-04-2014 |
20150027787 | CUTTING ELEMENTS, RELATED METHODS OF FORMING A CUTTING ELEMENT, AND RELATED EARTH-BORING TOOLS - A cutting element comprises a supporting substrate, and a polycrystalline compact attached to an end of the supporting substrate. The polycrystalline compact comprises a region adjacent the end of the supporting substrate, and another region at least substantially laterally circumscribing the region and having lesser permeability than the region. A method of forming a cutting element, and an earth-boring tool are also described. | 01-29-2015 |