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212 results about "RT - Radiotherapy" patented technology
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Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is therapy using ionizing radiation, generally as part of cancer treatment to control or kill malignant cells and normally delivered by a linear accelerator.
Charged-particle beam accelerator, particle beam radiation therapy system using the charged-particle beam accelerator, and method of operating the particle beam radiation therapy system
ActiveUS7122978B2Easy to identifyMagnetic induction acceleratorsMagnetic resonance acceleratorsParticle acceleratorResonance
A charged-particle beam accelerator includes an RF-KO unit for increasing the amplitude of betatron oscillation of a charged-particle beam within a stable region of resonance and an extraction quadrupole electromagnet unit for varying the stable region of resonance. The RF-KO unit is operated within a frequency range in which the circulating beam does not go beyond a boundary of the stable region of resonance, and the extraction quadrupole electromagnet unit is operated with appropriate timing as required for beam extraction so that the charged-particle beam is extracted with desired timing.
Owner:MITSUBISHI ELECTRIC CORP
Slit and slot scan, SAR, and compton devices and systems for radiation imaging
ActiveUS20100270462A1Reduce productionReduce maintenance costsElectric discharge tubesElectroluminescent light sourcesHigh energyGas detector
The invention provides methods and apparatus for detecting radiation including x-ray photon (including gamma ray photon) and particle radiation for radiographic imaging (including conventional CT and radiation therapy portal and CT), nuclear medicine, material composition analysis, container inspection, mine detection, remediation, high energy physics, and astronomy. This invention provides novel face-on, edge-on, edge-on sub-aperture resolution (SAR), and face-on SAR scintillator detectors, designs and systems for enhanced slit and slot scan radiographic imaging suitable for medical, industrial, Homeland Security, and scientific applications. Some of these detector designs are readily extended for use as area detectors, including cross-coupled arrays, gas detectors, and Compton gamma cameras. Energy integration, photon counting, and limited energy resolution readout capabilities are described. Continuous slit and slot designs as well as sub-slit and sub-slot geometries are described, permitting the use of modular detectors.
Owner:MINNESOTA IMAGING & ENG
Device and method for positioning a target volume in radiation therapy apparatus
InactiveUS7860216B2Pointing accuratelyThermometers using material expansion/contactionRadiation beam directing meansRadiation beamRT - Radiotherapy
Device for positioning a target volume (112) such, as a phantom or a patient in a radiation therapy apparatus, said apparatus directing a radiation beam (405) towards said target (112), characterized in that it comprises:—a target support (100) whereon the target is immobilized; a two dimensional radiation detector (103) fixed with fixations means (101, 102, 104, 106 107; 301, 302, 304, 305, 306; 208, 209) in a known geometric relationship to said target support (100), said radiation detector (103) being capable of detecting the position of intersection of said radiation beam (105) with said detector (103); correcting means for correcting the relative position of said beam (105) and said target support 100), based on said detected intersection position.
Owner:ION BEAM APPL
Reducing variation in radiation treatment therapy planning
InactiveUS7995813B2Shorten the timeConvenient treatmentSurgeryCharacter and pattern recognitionProgram planningGeolocation
A method and apparatus are disclosed that reduces variation in radiation therapy treatment planning among plurality of users within the same or different geographic locations. The system includes a method and an apparatus that provide users with the knowledge information and utilizing the knowledge information to contour target volumes for radiation treatment planning. The mode of operation includes utilizing a stand-alone workstation or a server computer connected to the plurality of thin client workstations.
Owner:VARIAN MEDICAL SYSTEMS
Charged-particle beam accelerator, particle beam radiation therapy system using the charged-particle beam accelerator, and method of operating the particle beam radiation therapy system
ActiveUS20050231138A1Easy to identifyMagnetic induction acceleratorsMagnetic resonance acceleratorsParticle beamResonance
A charged-particle beam accelerator includes an RF-KO unit for increasing the amplitude of betatron oscillation of a charged-particle beam within a stable region of resonance and an extraction quadrupole electromagnet unit for varying the stable region of resonance. The RF-KO unit is operated within a frequency range in which the circulating beam does not go beyond a boundary of the stable region of resonance, and the extraction quadrupole electromagnet unit is operated with appropriate timing as required for beam extraction so that the charged-particle beam is extracted with desired timing.
Owner:MITSUBISHI ELECTRIC CORP
Real-time target confirmation for radiation therapy
InactiveUS7453984B2Easy to measureDiagnostic recording/measuringSensorsGoal recognitionNuclear medicine
A method for radiation therapy with target recognition has a first target identification system for obtaining first target characteristics within a patient's body. A second target identification system obtains second target characteristics within the body aided by the first target characteristics. A computation means for calculation of three-dimensional coordinates of the target region with respect to a three-dimensional radiotherapy system uses the second target characteristics. Irradiation means for radiotherapy mode adaptation is used in response to the second target characteristics and the calculation of three-dimensional coordinates of the target region.
Owner:CARESTREAM HEALTH INC
Method and apparatus for intensity control of a charged particle beam extracted from a synchrotron
ActiveUS20090314961A1Material analysis using wave/particle radiationRadiation/particle handlingAbnormal tissue growthProton
The invention comprises intensity control of a charged particle beam acceleration, extraction, and / or targeting method and apparatus used in conjunction with charged particle beam radiation therapy of cancerous tumors. Particularly, intensity of a charged particle stream of a synchrotron is described. Intensity control is described in combination with turning magnets, edge focusing magnets, concentrating magnetic field magnets, winding and control coils, and extraction elements of the synchrotron. The system reduces the overall size of the synchrotron, provides a tightly controlled proton beam, directly reduces the size of required magnetic fields, directly reduces required operating power, and allows continual acceleration of protons in a synchrotron even during a process of extracting protons from the synchrotron.
Owner:BALAKIN ANDREY VLADIMIROVICH +1
Method and apparatus for intensity control of a charged particle beam extracted from a synchrotron
ActiveUS20120205551A1Stability-of-path spectrometersMaterial analysis by optical meansParticle beamProton
The invention comprises intensity control of a charged particle beam acceleration, extraction, and / or targeting method and apparatus used in conjunction with charged particle beam radiation therapy of cancerous tumors. Particularly, intensity of a charged particle stream of a synchrotron is described. Intensity control is described in combination with turning magnets, edge focusing magnets, concentrating magnetic field magnets, winding and control coils, and extraction elements of the synchrotron. The system reduces the overall size of the synchrotron, provides a tightly controlled proton beam, directly reduces the size of required magnetic fields, directly reduces required operating power, and allows continual acceleration of protons in a synchrotron even during a process of extracting protons from the synchrotron.
Owner:BALAKIN ANDREY VLADIMIROVICH +1
System Including Computed Tomography Device For Image Guided Treatment
InactiveUS20080205588A1Material analysis using wave/particle radiationRadiation/particle handlingImaging modalitiesComputing tomography
A computed tomography (CT) system (300) includes a table (304) for holding a patient (302), a first gantry (311) for holding a radiation source (310) which emits penetrating radiation, and a second gantry (313) spaced apart from the first gantry holding a penetrating radiation detector (312) for receiving the penetrating radiation after passing through the patient. The penetrating radiation from the radiation source is angled at a non-perpendicular angle with respect to a longitudinal axis (322) of the table. A third gantry (320) is spaced apart from the first and second gantry including at least one radiation therapy source (321) or other (non-CT) imaging system, wherein the third gantry is located between the first gantry and the second gantry. The CT system thus permits computed tomography to occur simultaneously or substantially simultaneously with other procedures, such as various other radiation therapy systems, imaging modality or surgical procedures.
Owner:UNIV OF FLORIDA RES FOUNDATION INC
High energy polyenergetic ion selection systems, ion beam therapy systems, and ion beam treatment centers
Devices and methods are provided for generating laser-accelerated high energy polyenergetic positive ion beams that are spatially separated and modulated based on energy level. The spatially separated and modulated high energy polyenergetic positive ion beams are used for radiation therapy. In addition, methods are provided for treating patients in radiation treatment centers using therapeutically suitable high energy polyenergetic positive ion beams that are provided by spatially separating and modulating positive ion beams. The production of radioisotopes using spatially separated and modulated laser-accelerated high energy polyenergetic positive ion beams is also provided.
Owner:INST FOR CANCER RES
Charged particle cancer therapy system magnet control method and apparatus
ActiveUS8373145B2Stability-of-path spectrometersBeam/ray focussing/reflecting arrangementsProtonParticle physics
The invention comprises a charged particle beam acceleration, extraction, and / or targeting method and apparatus used in conjunction with charged particle beam radiation therapy of cancerous tumors. Novel design features of a synchrotron are described. Particularly, turning magnets, edge focusing magnets, concentrating magnetic field magnets, winding and control coils, and extraction elements are described that minimize the overall size of the synchrotron, provide a tightly controlled proton beam, directly reduce the size of required magnetic fields, directly reduces required operating power, and allow continual acceleration of protons in a synchrotron even during a process of extracting protons from the synchrotron.
Owner:BALAKIN ANDREY VLADIMIROVICH +1
Gantry comprising beam analyser for use in particle therapy
ActiveUS20120280150A1Limited energy spreadLow costHandling using diaphragms/collimetersChemical conversion by chemical reactionMomentumParticle beam
The present invention relates to a particle therapy apparatus used for radiation therapy. More particularly, this invention relates to a gantry for delivering particle beams which comprises means to analyse the incoming beam. Means are integrated into the gantry to limit the momentum spread of the beam and / or the emittance of the beam.
Owner:ION BEAM APPL
Method and system for evaluating quality assurance criteria in delivery of a treatment plan
ActiveUS8442287B2Affect qualityDetection errorCharacter and pattern recognitionDiagnostic recording/measuringQuality assuranceMathematical model
Owner:TOMOTHERAPY INC
Method and a system for optimizing a radiation treatment plan
A computer-based method for generating an improved radiation therapy treatment plan for a treatment volume having a target and an organ-at-risk. The method includes a step of accessing an existing radiation therapy treatment plan from a memory of a computer, a dose distribution of the existing radiation therapy treatment plan serving as a reference dose distribution; and performing machine parameter optimization on the existing radiation therapy treatment plan with the computer by pursuing an optimization goal to minimize doses to the organ-at-risk, thereby generating the improved radiation therapy treatment plan.
Owner:RAYSEARCH LAB
Patient positioner system
ActiveUS9199372B2Lower cost of capitalImprove throughputProgramme-controlled manipulatorOperating tablesRobotic systemsVision based
A computer controlled robot system for positioning a patient for radiation therapy or other medical procedures and the like. The robot is mounted at the top of a vertical shaft extending from the treatment room floor and includes horizontal arms arranged to maximize the available work envelope and eliminate “dead spots” in the envelope that the robot cannot reach. A double redundant coupling system for coupling devices to the robot is provided. A vision based docking system is employed for automatically coupling devices to the robot. Various enhanced safety features are provided, including device specific collision avoidance.
Owner:LUZADER DAVID J +2
Collimator
ActiveUS20100034357A1Minimize doseMinimize radiation responseHandling using diaphragms/collimetersX-ray/gamma-ray/particle-irradiation therapyLow densityRadiation attenuation
A collimator (1) primarily adapted for usage in a narrow scanned pencil beam radiation therapy system (100) includes adjacent pairs (5) of collimator leaves (10, 20). An inner portion (12) of a collimator leaf (10) facing the opposite leaf (20) of a pair (5) is made of a first material having high linear radiation attenuation. The remaining, major portion (14) of the leaf (10) is made of a second material having a comparatively low density, weight and radiation attenuation. The collimator (1) provides effective penumbra trimming of a radiation beam (60), while simultaneously protecting healthy tissue around a tumor in an irradiated patient (80) from the radiation. The new design results in a significantly more compact, lighter and less expensive collimator (1) as compared to traditional collimators.
Owner:C-RAD INNOVATION AB
System for the real-time detection of targets for radiation therapy
InactiveUS7418079B2X-ray apparatusX-ray/gamma-ray/particle-irradiation therapyTherapeutic radiationFixed position
A method and apparatus for delivering therapeutic radiation (112) to a radiotherapy target (119) in a patient (114) includes a diagnostic X-ray source (124, 125) connected to a treatment couch (116), facing a first side of the patient. An imaging device (118) is connected to the treatment couch facing a second side of the patient. The diagnostic X-ray source and the imaging device move in lockstep with movement of the treatment couch. The patient is in a fixed position relative to the treatment couch.
Owner:CARESTREAM HEALTH INC
Laser-Accelerated Proton Therapy Units And Superconducting Electromagnet Systems For Same
InactiveUS20090050819A1Material analysis by optical meansMagnetic discharge controlSuperconducting CoilsLight beam
Compact particle selection and collimation devices are disclosed for delivering beams of protons with desired energy spectra. These devices are useful with laser-accelerated proton therapy systems, in which the initial protons have broad energy and angular distributions. Superconducting magnet systems produce a desired magnetic field configuration to spread the protons with different energies and emitting angles for particle selection. The simulation of proton transport in the presence of the magnetic field shows that the selected protons are successfully refocused on the beam axis after passing through the magnetic field with the optimal magnet system. Dose distributions are also provided using Monte Carlo simulations of the laser-accelerated proton beams for radiation therapy applications.
Owner:INST FOR CANCER RES
Multiple-objective optimization method and system capable of optimizing radiotherapy beam intensity distribution
InactiveCN101422640AX-ray apparatusSpecial data processing applicationsMathematical modelGenetic algorithm
The invention discloses a multipurpose optimal method for optimizing the distribution of radiation therapy beam intensity and a system thereof. The method includes: the establishment of an optimization model, which is used for transferring requirements of plan designers and clinical limits into an optimal mathematical model; and multipurpose optimization of improved rapid nondominated multipurpose genetic algorithm, which is used for optimizing strength scattergram of each radiation beam. The system comprises a data input module, an optimization model establishing module, a multipurpose optimal module, and a data output module. The invention is characterized by accurate establishment of optimization problem mathematic models and high solving speed, and is also characterized in that a plurality of noinferior solutions can be got after multipurpose one-time optimization, therefore the plan designers can choose optimum solutions to meet requirements from all the solutions.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
Areal modulator for intensity modulated radiation therapy
ActiveUS8129701B2Small sizeSpeed up treatmentElectrode and associated part arrangementsMaterial analysis by optical meansLight beamIntensity-modulated radiation therapy
A modulator for radiation therapy provides modulation of an area beam to decrease treatment time. Separate channels passing modulated “beamlets” are possible by spacing the channels such that spreading of the beams and multiple angles of treatment eliminate cold spots. The space between the channels allows well-defined channel walls and space for modulator mechanisms.
Owner:AL SADAH JIHAD H +3
Slit and slot scan, SAR, and compton devices and systems for radiation imaging
InactiveUS8017906B2Cost-effectiveReduce maintenanceCalibration apparatusX/gamma/cosmic radiation measurmentHigh energyGas detector
Owner:MINNESOTA IMAGING & ENG
System and method for radiation therapy imaging and treatment workflow scheduling and optimization
ActiveUS8175892B2Medical simulationMechanical/radiation/invasive therapiesTreatment ScheduleSafety index
Owner:LAP LASER APPLIKATIONEN
Calibrating a positron emission tomography scanner
Owner:VARIAN MEDICAL SYST PARTICLE THERAPY GMBH & CO KG
Method and system for evaluating quality assurance criteria in delivery of a treatment plan
ActiveUS20110112351A1Affect qualityDetection errorCharacter and pattern recognitionDiagnostic recording/measuringQuality assuranceMathematical model
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.
Owner:TOMOTHERAPY INC
Helical electron beam generating device and method of use
InactiveUS6878951B2Reduce amountQuickly and easily into proper position for treatmentLaser detailsElectrode and associated part arrangementsElectronMultileaf collimator
A device for generating helical electron beams that can be used for radiation therapy is disclosed. The device contains a tertiary collimating cone that can be attached to a gantry of a linear accelerator or placed directly below the gantry. The tertiary collimating cone has a dynamic energy compensator and a magnetic electron collimator to modify the energy of electrons and to generate a helical trajectory. A multileaf collimator may be present within the tertiary collimating cone. A computer coordinates the movements of various components. The helical electron beam produced by this device can be targeted to tumors better and safer and reduce the amount of radiation hitting normal tissue than current devices.
Owner:UNIV OF MARYLAND BALTIMORE
Leaf, multi-leaf collimator, device for delimiting beams and irradiation device
ActiveUS7397902B2Reduce weightReduce materialElectrode and associated part arrangementsHandling using diaphragms/collimetersMulti leaf collimatorLight beam
The invention relates to a leaf (1) for a multi-leaf collimator (2) for delimiting a high-energy beam (3, 3′, 3″) of an irradiation device, in particular for conformational radiation therapy. According to the invention, the multi-leaf collimator (2) comprises a plurality of opposing leaves (1), which can be brought into the beam path (3, 3′, 3″) by means of drives (4), in such a way that the contour (5) of said path can be shaped in accordance with the volume to be irradiated. The need for beam-absorbent material (7) is reduced, as the leaf (1) essentially only comprises a beam-absorbent material (7) of an appropriate thickness (8) in a region (6) that is brought into the path (3, 3′, 3″) of the high-energy beam (3) during the course of all possible positional displacements (9). The invention also relates to a corresponding multi-leaf collimator (2), a device (22) for delimiting beams, and an irradiation device.
Owner:SIEMENS HEALTHCARE GMBH
Laser-accelerated proton therapy units and superconducting electromagnet systems for same
Compact particle selection and collimation devices are disclosed for delivering beams of ions with desired energy spectra. These devices are useful with laser-accelerated ion therapy systems, in which the initial ions have broad energy and angular distributions. Superconducting electromagnet systems produce a desired magnetic field configuration to spread the ions with different energies and emitting angles for particle selection. The simulation of ion transport in the presence of the magnetic field shows that the selected ions are successfully refocused on the beam axis after passing through the magnetic field. Dose distributions are also provided using Monte Carlo simulations of the laser-accelerated ion beams for radiation therapy applications.
Owner:INST FOR CANCER RES
Detector-shift type combined radiation therapy/PET apparatus
InactiveUS8581196B2Image can be createdAvoid degradationMaterial analysis by optical meansTomographyAnnihilation radiationFluence
In beam monitoring for detecting annihilation radiations produced by radiation irradiation in radiation therapy for cancer which is performed by irradiating the affected area by X-rays, gamma rays, or particle beams, a detector-shift type combined radiation therapy / PET apparatus is provided with an open PET device that includes a plurality of shiftable multi-ring detector rings; and a radiation irradiation device that is capable of irradiation with a radiation beam through between the detector rings. The apparatus changes the positions of the detector rings, performs irradiation with the radiation beam through between the detector rings, and then performs radiation measurement.
Owner:NAT INST FOR QUANTUM & RADIOLOGICAL SCI & TECH
System and methods for performing medical physics calculation
ActiveUS20130054670A1Easy and economical and secure accessAlters of calculationMedical simulationMechanical/radiation/invasive therapiesRadiant energy densityComputer science
A method of calculating radiation fluence and energy deposition distributions on a networked virtual computational cluster is presented. With this method, complex Monte Carlo simulations that require expansive equipment, personnel, and financial resources can be done efficiently and inexpensively by hospitals and clinics requiring radiation therapy dose calculations.
Owner:STC UNM
Compact gantry for particle therapy
ActiveUS20130001432A1Stability-of-path spectrometersBeam/ray focussing/reflecting arrangementsParticle beamDipole magnet
The present invention relates to a particle therapy apparatus used for radiation therapy. More particularly, this invention relates to a compact isocentric gantry for delivering particle beams perpendicularly to a rotation axis of the gantry. The gantry comprises three dipole magnets. The angle of the last dipole magnet is smaller than 90° and a most preferred bending angle for this last dipole magnet is 60°.
Owner:ION BEAM APPL
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