Patent application number | Description | Published |
20080303457 | Modular linac and systems to support same - Some embodiments include an accelerator waveguide to generate an accelerated radiation beam, and a housing to house to accelerator waveguide. The housing may include an interface to couple the housing to and to decouple the housing from a movable support. Some aspects include coupling a first interface of a housing to a first interface of a movable support, and uncoupling the first interface of the housing from the first interface of the movable support, wherein the housing includes an accelerator waveguide to generate an accelerated radiation beam. | 12-11-2008 |
20090067576 | Online verification of radiation field, collimator position and/or leakage - A system includes delivery of treatment radiation to a target, acquisition of an image representing the treatment radiation during delivery of the treatment radiation, determination of a position of a leaf of a collimator delivery of the treatment radiation based on the image, and presentation of a notification of an error during delivery of the treatment radiation based on the determined position. | 03-12-2009 |
20090086889 | SYSTEM AND METHOD FOR TOMOSYNTHESIS - A system may comprise a plurality of imaging x-ray sources disposed in a fixed relation with respect to one another, each of the plurality of imaging x-ray sources to emit a respective imaging x-ray, an x-ray detector to acquire x-ray absorption projections of an object, each of the x-ray absorption projections associated with an imaging x-ray emitted by a respective one of the plurality of imaging x-ray sources, and a processor to perform digital tomosynthesis using the x-ray absorption projections to generate a cross-sectional image of the object. | 04-02-2009 |
20090296886 | DIGITAL TOMOSYNTHESIS IN ROBOTIC STEREOTACTIC RADIOSURGERY - Some embodiments include a support movable with at least four degrees of freedom, a therapeutic radiation source coupled to the support, a plurality of radiation sources disposed in a fixed relationship to each other, the plurality of radiation sources movable in the fixed relationship with at least four degrees of freedom, a detector to acquire a projection image based on radiation emitted from one of the plurality of radiation sources, and a processor to perform digital tomosynthesis on the projection image acquired by the detector and a plurality of other projection images to generate a cross-sectional image representing a plane viewed from a perspective of the therapeutic radiation source. | 12-03-2009 |
20100046696 | SYSTEM TO ESTIMATE X-RAY SCATTER - A system may include determination of a first scatter kernel based on a first energy, a material-equivalent radiological thickness and a first diameter, wherein the first scatter kernel is not a monotonically decreasing function of radial coordinate, determination of a second scatter kernel based on the first energy, the material-equivalent radiological thickness and a second diameter greater than the first diameter, determination of a third scatter kernel based on the first scatter kernel and the second scatter kernel, wherein the third scatter kernel is a monotonically decreasing function of radial coordinate, and estimation of scatter radiation within the projection image of the object based on the third scatter kernel. | 02-25-2010 |
20100059684 | RADIATION SENSOR ARRAY USING CONDUCTIVE NANOSTRUCTURES - A system may include a conductive substrate, a plurality of conductive nanostructures disposed on a first side of the conductive substrate, an insulating substrate, and a plurality of electrodes disposed on a first side of the insulating substrate. The first side of the conductive substrate faces the first side of the insulating substrate, and each of the plurality of electrodes is electrically connected to the conductive substrate. | 03-11-2010 |
20110006224 | Digital Tomosynthesis in Ion Beam Therapy Systems - Some embodiments include creation of projection images of a patient volume using one or more x-ray sources, performance of digital tomosynthesis on the projection images to generate a cross-sectional image of the patient volume, determination of a location of a target within the patient volume based on the cross-sectional image, determination of a location of a Bragg peak associated with an ion beam, and determination of a difference between the location of the target and the location of the Bragg peak. | 01-13-2011 |
20110009736 | Localization Using Non-Metallic Implantable Fiducial Markers - A system may include a biocompatible housing and an electrical circuit disposed within the housing, the electrical circuit to emit a radiofrequency signal, and wherein the electrical circuit does not comprise a metal. Also included may be a signal generator to generate a wireless signal to trigger the electrical circuit, a receiver to receive a wireless response signal generated by the triggered electrical circuit, a processor to determine a location of the biocompatible housing based on the wireless response signal, and a ion beam source to deliver a ion beam to a patient volume including the biocompatible housing. | 01-13-2011 |
20110085645 | Calibration of Imaging Geometry Parameters - Some embodiments include determination of a first projection image of a phantom based on first imaging geometry parameters associated with a first radiation-based imaging system and on a virtual model of the phantom, acquisition of a second projection image of the phantom based on radiation emitted from the first radiation-based imaging system, the phantom located at a first position, and determination of a difference between the first projection image and the second projection image. | 04-14-2011 |
20110176655 | System and Method for Tomosynthesis - A system and method for tomosynthesis, the method including emitting a respective imaging x-ray from each of a plurality of imaging x-ray sources disposed in a fixed relation with respect to one another, acquiring x-ray absorption projections of an object, each of the x-ray absorption projections associated with an imaging x-ray emitted by a respective one of the plurality of imaging x-ray sources, and performing digital tomosynthesis using the x-ray absorption projections to generate a cross-sectional image of the object. | 07-21-2011 |
20110309242 | Radiation-activated Fiducial Markers for Organ Tracking - A system may include transmission of an activation beam to one or more non-radioactive elements disposed in a patient volume, wherein the elements become radioactive in response to the activation beam, detection of radiation emitted by the one or more now-radioactive elements, determination of respective locations of the one or more now-radioactive elements based on the detected radiation, and transmission of a treatment beam to the patient volume based on the respective locations. | 12-22-2011 |
20120033789 | Radiation therapy using predictive target tracking and control points - A system includes determination of a model of a trajectory of a target volume, determination of a treatment plan identifying a portion of the trajectory of the target volume and an irradiation field corresponding to the portion of the trajectory, the portion of the trajectory commencing at a control point of the trajectory, control of a collimator to restrict a treatment beam to the irradiation field, monitoring of the trajectory of the target volume until it is determined that the trajectory is at the control point, and delivery of the treatment beam to the irradiation field in response to determining that the trajectory of the target volume is at the control point. | 02-09-2012 |
20130121457 | Patient Positioning System - A system includes acquisition of a three-dimensional computed tomography image of a patient volume at a computed tomography scanner, acquisition of projection images of the patient volume located at an isocenter of a linear accelerator, and determination of a transformation between a coordinate system of the linear accelerator and a coordinate system of the three-dimensional computed tomography image based on the projection images. | 05-16-2013 |
20140128747 | ASSESSING ENDOTHELIAL FUNCTION USING A BLOOD PRESSURE CUFF - Methods and apparatus are provided for assessing endothelial function in a mammal. The methods involve applying to the artery a substantially constant external pressure, where the pressure is provided via a cuff adjacent to and/or around a region of the mammal's body; determining, over the course of one or more cardiac cycles, changes in pressure in the cuff resulting from cardiac activity of the mammal to establish a baseline value for a parameter related to endothelial function in the mammal; applying a stimulus to the mammal; determining, over the course of one or more cardiac cycles, changes in pressure in the cuff resulting from cardiac activity of the mammal to establish a stimulus-effected value for a parameter related to endothelial function in the mammal; wherein differences in the baseline value and the stimulus-effected value provide a measure of endothelial function in the mammal. | 05-08-2014 |