Patent application number | Description | Published |
20090041200 | Radiation therapy imaging and delivery utilizing coordinated motion of jaws, gantry, and couch - A method of delivering a radiation therapy treatment plan to a treatment area of a patient. The treatment plan is delivered using a radiation therapy system including a moveable support for supporting a patient, and a gantry moveable relative to the support. The gantry supports a radiation source, a set of jaws having a jaw width and a multi-leaf collimator for modulating the radiation during delivery of the treatment plan. The support is moved during delivery of the treatment plan to the treatment area, and the width of the jaws is dynamically adjusted during delivery of the treatment plan to the treatment area. | 02-12-2009 |
20090110145 | METHOD FOR ADAPTING FRACTIONATION OF A RADIATION THERAPY DOSE - A system and method of adapting a radiation therapy treatment plan for a patient by varying the fraction size delivered to the patient on any individual day, based at least partially on the use of daily patient registration (i.e., taking images of the patient before each fraction is delivered to see the position and size of the tumor on that day). The fraction size can be dynamically altered based upon the biology of the tumor. | 04-30-2009 |
20090116616 | SYSTEM AND METHOD FOR MOTION ADAPTIVE OPTIMIZATION FOR RADIATION THERAPY DELIVERY - A system and method of optimizing delivery of a radiation therapy treatment. The system optimizes treatment delivery in real-time to take into account a variety of factors, such as patient anatomical and physiological changes (e.g., respiration and other movement, etc.), and machine configuration changes (e.g., beam output factors, couch error, leaf error, etc.). | 05-07-2009 |
20090252291 | SYSTEM AND METHOD FOR MOTION ADAPTIVE OPTIMIZATION FOR RADIATION THERAPY DELIVERY - A system and method of optimizing delivery of a radiation therapy treatment. The system optimizes treatment delivery in real-time to take into account a variety of factors, such as patient anatomical and physiological changes (e.g., respiration and other movement, etc.), and machine configuration changes (e.g., beam output factors, couch error, leaf error, etc.). | 10-08-2009 |
20100053208 | SYSTEM AND METHOD OF CONTOURING A TARGET AREA - A two-dimensional contouring tool that allows a user to maintain a minimum distance away (in 3D) from other structures. The contouring tool allows the user to rapidly define a series of contours that conform to the shape of one or more existing contours (or targets) with user-specified margin limits between the new contour and the existing contours (or targets). | 03-04-2010 |
20100054413 | SYSTEM AND METHOD OF CALCULATING DOSE UNCERTAINTY - A dose calculation tool operable to generate a variance map that represents a dose uncertainty. The variance map illustrates on a point-by-point basis where high uncertainty in the dose may exist and where low uncertainty in the dose may exist. The dose uncertainty is a result of an error in one or more data parameters related to a delivery parameter or a computational parameter. | 03-04-2010 |
20100228116 | SYSTEM AND METHOD OF OPTIMIZING A HETEROGENEOUS RADIATION DOSE TO BE DELIVERED TO A PATIENT - A radiation therapy treatment system and method of optimizing a heterogeneous dose to be delivered to a patient. The system includes a computer processor and a software program stored in a computer readable medium accessible by the computer processor. The software program is operable to receive a prescribed heterogeneous radiation dose to be delivered to the patient, determine a homogeneous reference dose, calculate a complementary radiation dose by determining a difference between the homogeneous reference dose and the heterogeneous radiation dose, generate a treatment plan for the patient, the treatment plan including an optimized radiation dose to be delivered to the patient, combine the complementary radiation dose and the optimized radiation dose, evaluate the combined radiation dose with respect to the homogeneous reference dose, and display the combined radiation dose. | 09-09-2010 |
20100312104 | SYSTEM AND METHOD FOR CALIBRATING AND POSITIONING A RADIATION THERAPY TREATMENT TABLE - A system and method for calibrating and positioning a radiation therapy treatment table with a high degree of precision and accuracy. The system and method comprising a treatment table for use with a radiation therapy system with radiographic indexing markers embedded or inlaid in the patient treatment table. The radiographic indexing markers having a density different from density of the table material, or a radio-frequency or magnetic contrasting matter, something that the imaging system and detector of the radiation therapy system can detect, so that when scanned, with or without a patient or phantom on the table, the precise location of the patient treatment table in the x, y and z planes is known. The radiographic indexing markers may also have the ability to be visually seen by the technician, doctor, physicist or other health care provider conducting the procedure. This is important so that the table may be reconstructed, alone or with a phantom on it, by the radiation therapy system software, providing a very good indication of where the table top is prior to treatment. | 12-09-2010 |
20110019889 | System and method of applying anatomically-constrained deformation - System and method of generating a warp field to generate a deformed image. The system and method use segmentation in a new method of image deformation with the intent of improving the anatomical significance of the results. Instead of allowing each image voxel to move in any direction, only a few anatomical motions are permissible. The planning image and the daily image are both segmented automatically. These segmentations are then analyzed to define the values of the few anatomical parameters that govern the allowable motions. Given these model parameters, a deformation or warp field is generated directly without iteration. The warp field is applied to the planning image or the daily image to deform the image. The deformed image can be displayed to a user. | 01-27-2011 |
20110112351 | METHOD AND SYSTEM FOR EVALUATING QUALITY ASSURANCE CRITERIA IN DELIVERY OF A TREATMENT PLAN - System and method of determining whether a component of a radiation therapy system is operating within a dosimetric tolerance. The method can include the acts of generating a treatment plan for a patient, the treatment plan specifying a radiation amount to be delivered to the patient, delivering radiation to the patient according to the treatment plan, obtaining feedback during the delivery of radiation, the feedback related to one of a position, a velocity, and an acceleration for one of a multi-leaf collimator, a gantry, a couch, and a jaws, generating a mathematical model based on the feedback for one of the multi-leaf collimator, the gantry, the couch, and the jaws, calculating a delivered dose amount based on the mathematical model and treatment plan information, calculating a deviation in dose between the radiation amount specified in the treatment plan and the delivered dose amount, and determining whether the deviation in dose is within a dosimetric tolerance for the one of the multi-leaf collimator, the gantry, the couch, and the jaws. | 05-12-2011 |
20110122997 | NON-VOXEL-BASED BROAD-BEAM (NVBB) ALGORITHM FOR INTENSITY MODULATED RADIATION THERAPY DOSE CALCULATION AND PLAN OPTIMIZATION - A method of calculating a dose distribution for a patient for use in a radiation therapy treatment plan. The method includes acquiring an image of a volume within the patient, defining a radiation source, and defining a reference plane oriented between the radiation source and the patient. The method also includes generating a radiation therapy treatment plan, wherein the plan includes a plurality of rays that extend between the radiation source and the patient volume, and calculating a three-dimensional dose volume for the patient volume from the plurality of rays that intersect the reference plane without first having to independently calculate a dose distribution on each of the plurality of rays. The method can also include displaying the three-dimensional dose volume. | 05-26-2011 |
20120330085 | SYSTEM AND METHOD FOR CALIBRATING AND POSITIONING A RADIATION THERAPY TREATMENT TABLE - A system and method for calibrating and positioning a radiation therapy treatment table with a high degree of precision and accuracy. The treatment table includes radiographic indexing markers embedded or inlaid therein. The radiographic indexing markers can include a density different from density of the table material, or a radio-frequency or magnetic contrasting matter, something that the imaging system and detector of the radiation therapy system can detect, so that when scanned, with or without a patient or phantom on the table, the precise location of the patient treatment table in the x, y and z planes is known. This is important so that the table may be reconstructed, alone or with a phantom on it, by the radiation therapy system software, providing a very good indication of where the table top is prior to treatment. | 12-27-2012 |
20130121469 | SYSTEM AND METHOD OF CALCULATING DOSE UNCERTAINTY - A dose calculation tool operable to generate a variance map that represents a dose uncertainty. The variance map illustrates on a point-by-point basis where high uncertainty in the dose may exist and where low uncertainty in the dose may exist. The dose uncertainty is a result of an error in one or more data parameters related to a delivery parameter or a computational parameter. | 05-16-2013 |