Automatic quality checks for radiotherapy contouring
Granted: June 15, 2021
Patent Number:
11037298
Systems, devices, methods, and computer processing products for automatically checking for errors in segmentation (contouring) using heuristic and/or statistical evaluation methods.
Radiation therapy system with multiple X-ray imagers for near real-time localization
Granted: June 8, 2021
Patent Number:
11027153
A radiation therapy system is configured to enable imaging and treatment of a target volume during a single patient breath hold. The radiation system includes a rotating gantry on which are mounted a treatment-delivering X-ray source and multiple imaging X-ray sources and corresponding X-ray imaging devices. The multiple imaging X-ray sources and X-ray imaging devices enable the acquisition of volumetric image data for the target volume over a relatively short rotational arc, for example…
Knowledge-based spatial dose metrics and methods to generate beam orientations in radiotherapy
Granted: June 8, 2021
Patent Number:
11027147
A system for estimating a dose from a radiation therapy plan includes a memory that stores machine-readable instructions and a processor communicatively coupled to the memory, the processor operable to execute the instructions to subdivide a representation of a volume of interest into voxels. The processor also determines distances between a planned radiation field origin and each respective voxel. The processor further computes geometry-based expected (GED) metrics based on the…
Electromagnetic interference containment for accelerator systems
Granted: May 25, 2021
Patent Number:
11017975
An apparatus for coupling to an input connection of an electron gun, the input connection having a heater terminal and a cathode terminal, includes: a connector having a first end and a second end; wherein the first end of the connector is configured to attach to a cable; wherein the second end of the connector is configured to connect to the input connection of the electron gun; and wherein the connector comprises an opening configured to receive the heater terminal of the input…
Imaging devices
Granted: May 25, 2021
Patent Number:
11016202
An imaging device includes: a first scintillator layer; an array of detector elements, wherein the array of detector elements comprises a first detector element; a second scintillator layer configured to receive radiation after the radiation has passed through the first scintillator layer and the array of detector elements, wherein the array of detector elements is located between the first scintillator layer and the second scintillator layer; a first electrode located closer to the…
Method and system for mobile high-energy radiation treatment environment
Granted: May 18, 2021
Patent Number:
11010850
The present invention is directed to a method, system, and article of manufacture of a treatment environment engine on a mobile device to allow performance of workflow tasks inside of a high radiation medical procedure room. The treatment environment engine comprises a capturing module, a synchronization module, and a medical device control console component for capturing data (e.g., images or text) on the mobile device inside the medical procedure room and synchronizing the data via a…
Increased beam output and dynamic field shaping for radiotherapy system
Granted: May 18, 2021
Patent Number:
11007381
Systems and methods provide radiotherapy treatment by focusing an electron beam on an x-ray target (e.g., a tungsten plate) to produce a high-yield x-ray output with improved field shaping. A modified electron beam spatial distribution is employed to scan the x-ray target, such as a 2D periodic beam path, which advantageously lowers the x-ray target temperature compared to the typical compact beam spatial distribution. As a result, the x-ray target can produce a high yield output without…
Patient object mapping techniques
Granted: May 11, 2021
Patent Number:
11004549
Techniques for the mapping, selection and import of patient medical objects can include receiving metadata of a plurality of patient medical objects from one or more data sources. Metadata icons can be generated for the received metadata of the plurality of patient medical objects. The metadata icons can be filtered based on one or more received criteria. A patient map including the filtered metadata icons can be generated. In addition, the selection of one or more metadata icons in the…
Interactive dose manipulation using prioritized constraints
Granted: May 11, 2021
Patent Number:
11000697
In a method of interactive manipulation of the dose distribution of a radiation treatment plan, after an initial candidate treatment plan has been obtained, a set of clinical goals are transferred into a set of constraints. Each constraint may be expressed in terms of a threshold value for a respective quality index of the dose distribution. The dose distribution can then be modified interactively by modifying the threshold values for the set of constraints. Re-optimization may be…
Dynamic three-dimensional beam modification for radiation therapy
Granted: April 13, 2021
Patent Number:
10974076
A beam modifier shapes the distribution of a dose delivered to a target by a radiation beam emitted from a beam emitter of a radiotherapy device, particularly a beam that delivers a high radiation dose within a single, short period of time (e.g., less than a second). Elements of the beam modifier (e.g., rods) include material that can block or attenuate the beam. The elements can be dynamically and quickly configured to form an opening or transparent area through which a portion of the…
Radiation treatment planning and delivery for moving targets in the heart
Granted: April 13, 2021
Patent Number:
10974075
Method and systems are disclosed for radiating a moving target inside a heart. The method includes acquiring sequential volumetric representations of an area of the heart and defining a target tissue region and/or a radiation sensitive structure region in 3D for a first of the representations. The target tissue region and/or radiation sensitive structure region are identified for another of the representations by an analysis of the area of the heart from the first representation and the…
Multileaf collimator cone enabling stereotactic radiosurgery
Granted: April 13, 2021
Patent Number:
10974071
An apparatus includes a first multileaf collimator comprising a plurality of pairs of beam-blocking leaves each comprising an end portion. The end portions of beam-blocking leaves of two adjacent pairs are configured to collectively form an aperture when the two adjacent pairs of beam-blocking leaves are closed. The aperture may be sized and shaped to allow a radiation beam to pass through for radiosurgery.
Renovascular treatment device, system, and method for radiosurgically alleviating hypertension
Granted: April 13, 2021
Patent Number:
10974069
A radiosurgical method for treating cardiorenal disease of a patient, the method including directing radiosurgery radiation from outside the patient towards one or more target treatment regions encompassing sympathetic ganglia of the patient so as to inhibit the cardiorenal disease. In an exemplary embodiment, the method further includes acquiring three dimensional planning image data encompassing the first and second renal arteries, planning an ionizing radiation treatment of first and…
Color-coded and sized loadable polymeric particles for therapeutic and/or diagnostic applications and methods of preparing and using the same
Granted: April 13, 2021
Patent Number:
10973770
Polymeric particles are provided for use in therapeutic and/or diagnostic procedures. The particles include poly[bis(trifluoroethoxy)phosphazene and/or a derivative thereof which may be present throughout the particles or within an outer coating of the particles. The particles may also include a core having a hydrogel formed from an acrylic-based polymer. Such particles may be provided to a user in specific selected sizes to allow for selective embolization of certain sized blood vessels…
Automatic exposure control for x-ray imaging
Granted: April 13, 2021
Patent Number:
10973488
In an x-ray imaging method, the acquisition of a signal image is split off into acquisition of two or more subimages or frames. The first subimage may be acquired with an exposure of a low dose followed by a readout cycle. The dose of the exposure for acquiring the first subimage can be chosen such that it is below the default dose for a particular anatomy. The first subimage may be used to calculate or estimate the parameters of exposure for acquiring a second or subsequent images…
Adaptive image filtering for volume reconstruction using partial image data
Granted: April 6, 2021
Patent Number:
10967202
A method of generating an image synthesis process is disclosed, where the image synthesis process improves image quality of degraded volumetric images. In the method, a machine learning process is trained in a supervised learning framework as the image synthesis process. In the supervised learning process, a lower-quality partial-data reconstruction of a target volume is employed as an input object in the supervised learning process and a higher-quality full data reconstruction of the…
Single-pass imaging and radiation treatment delivery via an extended rotation gantry
Granted: March 30, 2021
Patent Number:
10960232
A radiation therapy system delivers radiation treatment over a 360-degree arc and performs a prepended imaging process, in a single pass, via an extended rotation gantry. While rotating the gantry in one direction about a bore of the radiation system, the radiation system generates multiple images of a target volume disposed in the bore using an imaging X-ray source mounted on the gantry. Then, while continuing to rotate the gantry in the same direction, the radiation system delivers a…
Radiation therapy systems and methods
Granted: March 30, 2021
Patent Number:
10960231
A radiation therapy system includes an accelerator and beam transport system that generates a beam of particles. The accelerator and beam transport system guides the beam on a path and into a nozzle that is operable for aiming the beam toward an object. The nozzle includes a scanning magnet operable for steering the beam toward different locations within the object, and also includes a beam energy adjuster configured to adjust the beam by, for example, placing different thicknesses of…
Automatic quality checks for radiotherapy contouring
Granted: March 23, 2021
Patent Number:
10957046
Systems, devices, methods, and computer processing products for automatically checking for errors in segmentation (contouring) using heuristic and/or statistical evaluation methods.
Incorporating multiple targets in trajectory optimization for radiotherapy treatment planning
Granted: March 16, 2021
Patent Number:
10946216
Methods of treatment trajectory optimization for radiotherapy treatment of multiple targets include determining beam's eye view (BEV) regions and a BEV region connectivity manifold for each target group of a plurality of target groups separately. The information contained in the BEV regions and the BEV region connectivity manifolds for all target groups is used to guide an optimizer to find optimal treatment trajectories. To improve the visibility of insufficiently exposed voxels of…
