Beam filter assembly and beam filter positioning device
Granted: July 14, 2020
Patent Number:
10714229
In a beam filter assembly, a base filter is employed to modify a beam quality of a radiation beam of a base energy level and a first filter slice is stacked with the base filter to modify a beam quality of a radiation beam of a first energy level higher than the base energy level. In a beam filter positioning device, a base stage carries a base filter and a first stage carries a filter slice. The base stage is provided with a first engagement site and a second engagement site. The first…
Systems and methods for three-dimensional visualization of deviation of volumetric structures with colored surface structures
Granted: July 7, 2020
Patent Number:
10706614
Embodiments of the present disclosure are directed to methods and computer systems for converting datasets into three-dimensional (“3D”) mesh surface visualization, displaying the mesh surface on a computer display, comparing two three-dimensional mesh surface structures by blending two primary different primary colors to create a secondary color, and computing the distance between two three-dimensional mesh surface structures converted from two closely-matched datasets. For…
Particle beam monitoring systems and methods
Granted: July 7, 2020
Patent Number:
10702716
Presented systems and methods facilitate efficient and effective monitoring of particle beams. In some embodiments, a system comprises a primary particle beam generator that generates a primary particle beam, and a monitoring component that monitors the primary particle beam. The monitoring component comprises: a reaction component that is impacted by the primary particle beam, wherein results of an impact include creation of secondary photons; a detection component that detects a…
System and methods for processing images to measure collimator leaf and collimator performance
Granted: July 7, 2020
Patent Number:
10702710
Systems and methods are proposed for accurate and efficient automatic measurement of jaw and leaf positioning in multi-leaf collimator imaging systems. Specifically, the method enables the automated and objective processing of images to determine characteristics of collimator jaws and MLC leaves. These novel techniques enable verification of collimator component positioning to ensure accurate beam modulation for radiation application procedures.
Accounting for imaging-based radiation doses
Granted: July 7, 2020
Patent Number:
10702708
A radiation-treatment plan to treat a treatment target in a given patient takes into account imaging-based dosing of that patient by, for example, automatically accounting for radiation dosing of the given patient that results from imaging to determine at least one physical position of the given patient when forming the radiation-treatment plan. These teachings are particularly beneficial when applied in application settings where the aforementioned imaging comprises obtaining images…
Systems, methods, and devices for multi-energy X-ray imaging
Granted: June 30, 2020
Patent Number:
10695020
A system can have an x-ray source that generates a series of individual x-ray pulses for multi-energy imaging. A first x-ray pulse can have a first energy level and a subsequent second x-ray pulse in the series can have a second energy level different from the first energy level. An x-ray imager can receive the x-rays from the x-ray source and can detect the received x-rays for image generation. A generator interface box (GIB) controls the x-ray source to provide the series of individual…
Systems and methods for detecting a possible collision between an object and a patient in a medical procedure
Granted: June 23, 2020
Patent Number:
10692240
A method of detecting a possible collision in a medical procedure, includes: obtaining a reference depth image; obtaining an input depth image; determining a composite image using at least a part of the reference depth image and at least a part of the input depth image, wherein the act of determining the composite image is performed using a processing unit; and determining whether there is a possible collision between an object and a patient based on the composite image.
Systems, methods, and devices for radiation beam asymmetry measurements using electronic portal imaging devices
Granted: June 16, 2020
Patent Number:
10682528
Systems and methods for determining beam asymmetry in a radiation treatment system using electronic portal imaging devices (EPIDs) without implementation of elaborate and complex EPID calibration procedures. The beam asymmetry is determined based on radiation scattered from different points in the radiation beam and measured with the same region of interest ROI of the EPID.
System, methods, and devices for real-time treatment verification using an electronic portal imaging device
Granted: June 16, 2020
Patent Number:
10682527
A radiation dose received by a patient from a radiation therapy system can be verified by acquiring a cine stream of image frames from an electronic portal imaging device (EPID) that is arranged to detect radiation exiting the patient during irradiation. The cine stream of EPID image frames can be processed in real-time to form exit images providing absolute dose measurements at the EPID (dose-to-water values), which is representative of the characteristics of the radiation received by…
Forward projection cylinder volume method
Granted: June 9, 2020
Patent Number:
10679104
A method of generating a template image includes: receiving an input from a user representing identifications of an object in different respective slices of a volumetric image; using the input to determine a volume-of-interest (VOI) that includes voxels in a subset of the volumetric image; and determining the template image using at least some of the voxels in the VOI, wherein the act of determining the template image comprises performing a forward projection of the at least some of the…
Systems, devices, and methods for quality assurance of radiation therapy
Granted: June 9, 2020
Patent Number:
10675486
Systems, devices, and methods for quality assurance for verification of radiation dose delivery in arc-based radiation therapy devices using a 3D gamma evaluation method.
Systems and methods for real-time target validation for image-guided radiation therapy
Granted: June 9, 2020
Patent Number:
10674915
Systems and methods for real-time target validation during radiation treatment therapy based on real-time target displacement and radiation dosimetry measurements.
Systems and methods for determining a state of a patient
Granted: June 2, 2020
Patent Number:
10667727
A method of monitoring a patient includes obtaining a first image of an object, obtaining a second image of the object, determining a level of similarity between the first and second images, obtaining a third image of the object, determining a level of similarity between the first and third images, analyzing a time series of values that includes the determined level of similarity between the first and second images and the determined level of similarity between the first and third…
Treatment energy delivery system
Granted: May 26, 2020
Patent Number:
10661102
A medical device includes: a base; a positioner coupled to the base; an accelerator coupled to the positioner, wherein the positioner is operable to rotate the accelerator relative to the base about at least two axes; and a power source coupled to the accelerator, the power source configured to provide microwave power for the accelerator, wherein a position of the power source relative to the base remains fixed during movement of the accelerator. A medical device includes: a base; a…
VMAT treatment planning using multicriteria optimization and a progressive optimization scheme
Granted: May 26, 2020
Patent Number:
10661097
Computer-implemented methods and systems can be used to facilitate generation of VMAT treatment plans for providing radiation therapy to patients. Starting from a seed plan, a library of alternative plans, each with an associated outcome for a set of treatment objectives, can be generated via a set of parallel optimization operations performed on the seed plan. A graphical user interface is provided, via which the user can navigate within a treatment space defined by the alternative…
Therapeutic radiation treatment
Granted: May 26, 2020
Patent Number:
10661096
A control circuit uses a (possibly self-generated) seed radiation treatment plan to identify a portion (possibly only a point) of a multi-criteria optimization (MCO)-based Pareto surface. The control circuit then selects a sampling plan set for MCO planning by enlarging that portion of the Pareto surface region to thereby facilitate developing an optimized radiation treatment plan. A radiation treatment platform then uses that optimized radiation treatment plan to treat a patient by…
Radiation treatment based upon user specification of at least one custom DVH estimation model training feature
Granted: May 19, 2020
Patent Number:
10653893
A control circuit provides an opportunity via a user interface for a user to specify at least one custom DVH estimation model training feature. The control circuit then combines a predetermined set of DVH estimation model training features with a user-specified customer DVH estimation model training feature to provide a combined feature set. The control circuit uses the combined feature set to train a knowledge-based DVH estimation model which is then used to provide a DVH estimation for…
Apparatus and methods for implanting objects, such as a bronchoscopically implanting markers in the lung of patients
Granted: May 19, 2020
Patent Number:
10653496
Apparatuses and methods for implanting objects, such as a marker, in the lungs of patients. In one embodiment, a bronchoscopic catheter assembly for implanting an object in the lung of a patient includes a handle, a delivery catheter projecting outwardly from the handle, and a push wire contained within the catheter. In one aspect of this embodiment, the catheter can be configured to releasably hold a plurality of markers at a distal end. In another aspect of this embodiment, the push…
Method and system for radiation application
Granted: May 12, 2020
Patent Number:
10646188
A method for generating one or more images includes collecting data samples representative of a motion of an object, acquiring image data of at least a part of the object over a time interval, synchronizing the data samples and the image data to a common time base, and generating one or more images based on the synchronized image data. A method for generating one or more images includes acquiring image data of at least a part of an object over a time interval, associating the image data…
Radiation treatment planning and delivery using collision free regions
Granted: May 12, 2020
Patent Number:
10646730
Collision free regions are predetermined for one or more class solutions. Each class solution has defined limits for allowed field geometry variations. Collision free regions in planning can be defined as a set of allowed isocenter positions relative to a fixation device. The collision free regions may be visualized by a user to plan for field geometry and isocenter position tradeoffs. Collision free regions in delivery can be defined as a set of allowed couch support coordinates. The…
