Patents by Inventor Kevin John Brown
Kevin John Brown has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11969930Abstract: An extrusion process for creating a roof ditch molding including forming a main body from a plastic material in a first stage extrusion, conveying the main body through a stacked array of die plates and into a first stage cooling tank, and communicating the main body from an outlet of the first stage cooling tank to a second stage extruder with crosshead die for applying a skim film bonding layer to the main body. Additional steps include applying a decorative layer over the skim bonding layer, communicating the main body to a third stage extruder with cross head die for applying wing portions in partially overlapping fashion along opposite side edges of the decorative layer and drawing the completed ditch molding through a second stage cooling tank prior to conducting one or more finishing operations.Type: GrantFiled: November 18, 2021Date of Patent: April 30, 2024Assignee: Bank of America, N.A., As Administrative AgentInventors: Timothy John Brown, Kevin Charles Baxter, Gerald N. Strich
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Publication number: 20240115882Abstract: Devices, systems and techniques are used for cancer treatment. An example control device may be configured to be communicatively coupled to a radiation source of a radiotherapy device and a position sensor of the radiotherapy device. The example control device may be used to calculate, for a sliding window of a radiotherapy treatment, a positional error between: a measured target position signal determined from a series of images and sampled at the acquisition times of the images, and an estimated target position signal. The example control device may generate a computer-executable instruction configured to alter the radiotherapy treatment in response to the positional error violating a threshold.Type: ApplicationFiled: April 28, 2023Publication date: April 11, 2024Inventors: Joshua Freedman, Fabienne Lathuiliere, Kevin John Brown, David Roberts, Sebastien Tremblay
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Publication number: 20240100364Abstract: Timing-based methods, systems, and computer readable mediums for a gated linear accelerator include synchronising a local clock of the linear accelerator with a clock of a patient monitoring system, determining latencies within one or more MR-gated radiotherapy processes and implementing latency based interlocks.Type: ApplicationFiled: September 28, 2023Publication date: March 28, 2024Inventors: Christopher Knox, Joshua Freedman, Kevin John Brown, David Roberts
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Publication number: 20230085445Abstract: A radiotherapy device is disclosed. The radiotherapy device includes a radiation source, a detecting means and controller communicatively coupled to the radiation source and the detecting means. The radiation source is configured to generate a treatment beam for irradiating a subject. The detecting means is configured to detect a motion of the subject, the motion comprising a first physiological motion component and a second physiological motion component.Type: ApplicationFiled: February 22, 2021Publication date: March 16, 2023Inventor: Kevin John Brown
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Patent number: 10039519Abstract: A method of aligning the radiation beam in a radiotherapy system comprising a source for producing a beam of radiation and an imaging device for imaging from the beam, both mounted to be rotatable about an axis, a fiducial phantom between the source and imaging device, the method comprising: rotating the beam and imaging device in a trajectory about the axis while obtaining images of the fiducial phantom from a plurality of different angles, at least one image including a feature of the imaging apparatus, adjusting the trajectory of the source relative to that feature to position the isocenter substantially in the center of the volume, determining from each image of the fiducial phantom the position of the source at the rotational position the image was obtained, and calculating the center of rotation of the positions of the source to define the isocenter of the system.Type: GrantFiled: October 27, 2014Date of Patent: August 7, 2018Assignee: Elekta AB (publ)Inventors: Kevin John Brown, David Anthony Roberts, Janusz Harasimowicz, Martin Sell, Julian Byrne, Armin Fuerst
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Patent number: 9694205Abstract: Radiotherapy apparatus comprises a source of radiation mounted on a chassis, that is rotatable about a rotation axis and the source being adapted to emit a beam of radiation along a beam axis; a patient support, moveable along a translation axis; a set of magnetic coils located on either side of the beam, for establishing a magnetic field along a first direction; the translation axis, the rotation axis, and the first direction being substantially parallel; and further comprising a multi-leaf collimator fixed in its orientation with respect to the source of radiation, the multi-leaf collimator comprising a plurality of elongate leaves disposed with their longitudinal directions substantially aligned with the first direction and movable in that direction between a withdrawn position in which the leaf lies outside the beam, an extended position in which the leaf projects across the beam.Type: GrantFiled: February 12, 2010Date of Patent: July 4, 2017Assignee: ELEKTA AB (PUBL)Inventors: John Allen, Duncan Neil Bourne, Kevin John Brown
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Patent number: 9480858Abstract: A radiotherapy system comprises a patient support, moveable along a translation axis, an imaging apparatus, comprising a first magnetic coil and a second magnetic coil, the first and second magnetic coils having a common central axis parallel to the translation axis, and being displaced from one another along the central axis to form a gap therebetween, the imaging apparatus being configured to obtain an image of a patient on the patient support, a source of radiation mounted on a chassis, the chassis being rotatable about the central axis and the source being adapted to emit a beam of radiation through the gap along a beam axis that intersects with the central axis, a multi-leaf collimator comprising a plurality of elongate leaves movable between at least a withdrawn position in which the leaf lies outside the beam, and an extended position in which the leaf projects across the beam, and a radiation detector mounted to the chassis opposite the source, the radiation detector having a plurality of detector eleType: GrantFiled: February 25, 2011Date of Patent: November 1, 2016Assignee: Elekta AB (Publ)Inventors: John Allen, Kevin John Brown
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Publication number: 20160114190Abstract: A method of aligning the radiation beam in a radiotherapy system comprising a source for producing a beam of radiation and an imaging device for imaging from the beam, both mounted so as to be rotatable about an axis using a fiducial phantom between the source and the imaging device, the method comprising: rotating the beam and imaging device in a trajectory about the axis while obtaining a plurality of images of the fiducial phantom from a plurality of different angles, wherein at least one image includes a feature of the imaging apparatus, adjusting the trajectory of the source relative to that feature so as to position the isocentre substantially centrally of the volume, determining from each image of the fiducial phantom the position of the source at the rotational position the image was obtained, and calculating the centre of rotation of the positions of the source to define the isocentre of the system.Type: ApplicationFiled: October 27, 2014Publication date: April 28, 2016Inventors: Kevin John BROWN, David Anthony ROBERTS, Janusz HARASIMOWICZ, Martin SELL
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Patent number: 8306189Abstract: X-ray apparatus comprises a linear accelerator adapted to produce a beam of electrons at one of at least two selectable energies and being controlled to change the selected energy on a periodic basis, and a target to which the beam is directed thereby to produce a beam of x-radiation, the target being non-homogenous and being driven to move periodically in synchrony with the change of the selected energy. In this way, the target can move so that a different part is exposed to the electron beam when different pulses arrive. This enables the appropriate target material to be employed depending on the selected energy. The easiest form of periodic movement for the target is likely to be a rotational movement.Type: GrantFiled: December 21, 2007Date of Patent: November 6, 2012Assignees: Elekta AB (Publ), The Institute of Cancer ResearchInventors: Kevin John Brown, Maria Giulia Thompson, Vibeke Nordmark Hansen, Philip Mark Evans, David Anthony Roberts
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Publication number: 20110201919Abstract: Radiotherapy apparatus comprises a source of radiation mounted on a chassis, the chassis being rotatable about a rotation axis and the source being adapted to emit a beam of radiation along a beam axis that intersects with the rotation axis; a patient support, moveable along a translation axis; a set of magnetic coils located on either side of the beam, for establishing a magnetic field at the point of intersection, spaced from that point along a first direction; the translation axis, the rotation axis, and the first direction being substantially parallel; and further comprising a multi-leaf collimator fixed in its orientation with respect to the source of radiation, the multi-leaf collimator comprising a plurality of elongate leaves disposed with their longitudinal directions substantially aligned with the first direction and movable in that direction between a withdrawn position in which the leaf lies outside the beam, an extended position in which the leaf projects across the beam and a plurality of intermType: ApplicationFiled: February 12, 2010Publication date: August 18, 2011Applicant: Elekta AB (Publ)Inventors: John Allen, Duncan Neil Bourne, Kevin John Brown
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Publication number: 20110201920Abstract: A radiotherapy system comprises a patient support, moveable along a translation axis, an imaging apparatus, comprising a first magnetic coil and a second magnetic coil, the first and second magnetic coils having a common central axis parallel to the translation axis, and being displaced from one another along the central axis to form a gap therebetween, the imaging apparatus being configured to obtain an image of a patient on the patient support, a source of radiation mounted on a chassis, the chassis being rotatable about the central axis and the source being adapted to emit a beam of radiation through the gap along a beam axis that intersects with the central axis, a multi-leaf collimator comprising a plurality of elongate leaves movable between at least a withdrawn position in which the leaf lies outside the beam, and an extended position in which the leaf projects across the beam, and a radiation detector mounted to the chassis opposite the source, the radiation detector having a plurality of detector eleType: ApplicationFiled: February 12, 2010Publication date: August 18, 2011Applicant: Elekta AB (Publ)Inventors: John Allen, Kevin John Brown
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Publication number: 20110199085Abstract: A radiotherapy system comprises a patient support, moveable along a translation axis, an imaging apparatus, comprising a first magnetic coil and a second magnetic coil, the first and second magnetic coils having a common central axis parallel to the translation axis, and being displaced from one another along the central axis to form a gap therebetween, the imaging apparatus being configured to obtain an image of a patient on the patient support, a source of radiation mounted on a chassis, the chassis being rotatable about the central axis and the source being adapted to emit a beam of radiation through the gap along a beam axis that intersects with the central axis, a multi-leaf collimator comprising a plurality of elongate leaves movable between at least a withdrawn position in which the leaf lies outside the beam, and an extended position in which the leaf projects across the beam, and a radiation detector mounted to the chassis opposite the source, the radiation detector having a plurality of detector eleType: ApplicationFiled: February 25, 2011Publication date: August 18, 2011Applicant: Elekta AB (Publ)Inventors: John Allen, Kevin John Brown
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Publication number: 20100310045Abstract: X-ray apparatus comprises a linear accelerator adapted to produce a beam of electrons at one of at least two selectable energies and being controlled to change the selected energy on a periodic basis, and a target to which the beam is directed thereby to produce a beam of x-radiation, the target being non-homogenous and being driven to move periodically in synchrony with the change of the selected energy. In this way, the target can move so that a different part is exposed to the electron beam when different pulses arrive. This enables the appropriate target material to be employed depending on the selected energy. The easiest form of periodic movement for the target is likely to be a rotational movement. The target can be immersed in a coolant fluid such as water. The linear accelerator can be of the type disclosed in WO2006/097697A1. The target preferably contains at least one exposed area of tungsten and/or at least one exposed area of carbon.Type: ApplicationFiled: December 21, 2007Publication date: December 9, 2010Applicants: ELEKTA AB (PUBL), THE INSTITUTE OF CANCER RESEARCHInventors: Kevin John Brown, Maria Giulia Thompspm, Vibeke Nordmark Hansen, Philip Mark Evans, David Anthony Roberts
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Patent number: 7729473Abstract: A highly compact, high-performance volumetric imaging system is proposed, that is integrated with a multi-source Cobalt-60 gamma irradiator for high throughput, high accuracy and minimally invasive fractioned treatments of intracranial, orbital and head-and-neck targets.Type: GrantFiled: July 29, 2008Date of Patent: June 1, 2010Assignee: Elekta AB (publ)Inventors: David A. Jaffray, Kevin John Brown, Gregory Bootsma, Mark Ruschin, Per Carlsson
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Publication number: 20100128951Abstract: A treatment planning apparatus for radiation treatment is described, adapted to accept a treatment plan comprising (i) a prior image of a region to be treated and a plurality of dose locations within the prior image, and (ii) a current image of the region to be treated, the apparatus comprising an associating means arranged, for each dose location, to locate an anatomical structure in the prior image proximate that dose location; a comparator for comparing the prior image and the current image, locating in the current image at least those anatomical structures that are associated with a dose location, and determining a transformation between the prior image and the current image for each anatomical structure; and a processing means for determining a current dose location by applying to each dose location the transformation determined in respect of the associated anatomical structure.Type: ApplicationFiled: April 18, 2007Publication date: May 27, 2010Applicant: ELEKTA AB (PUBL)Inventor: Kevin John Brown
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Patent number: 7672428Abstract: Recent advances in treatment planning and in the apparatus able to deliver such plans has called for the dose rate, i.e. the instantaneous power output of the radiation source, to be varied with time. This presents a difficulty in that the checking systems must monitor a varying power level against a varying valid range. We therefore monitor, instead, the energy of the individual pulses that form the beam. Known checking systems average out many pulses to determine the recent average power output by checking an ionization chamber every 100 ms or so. By reducing that time to less than a few milliseconds, a single pulse can be captured. The usual manner of varying the output of a radiation source of this type is to vary the pulse repetition frequency (PRF) and therefore the measured power output will remain constant notwithstanding changes to the time-averaged power output, and can be compared to a standard.Type: GrantFiled: May 17, 2006Date of Patent: March 2, 2010Assignee: Elekta AB (PUBL)Inventors: Kevin John Brown, Paul Boxall
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Publication number: 20100027744Abstract: A highly compact, high-performance volumetric imaging system is proposed, that is integrated with a multi-source Cobalt-60 gamma irradiator for high throughput, high accuracy and minimally invasive fractioned treatments of intracranial, orbital and head-and-neck targets.Type: ApplicationFiled: July 29, 2008Publication date: February 4, 2010Applicant: Elekta ABInventors: Kevin John Brown, Gregory Bootsma, Mark Ruschin, David A. Jaffray, Per Carlsson
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Patent number: 7356112Abstract: Artifacts in the reconstructed volume data of cone beam CT systems can be removed by the application of respiration correlation techniques to the acquired projection images. To achieve this, the phase of the patients breathing is monitored while acquiring projection images continuously. On completion of the acquisition, projection images that have comparable breathing phases can be selected from the complete set, and these are used to reconstruct the volume data using similar techniques to those of conventional CT. Any phase can be selected and therefore the effect of breathing can be studied. It is also possible to use a feature in the projection images such as the patient's diaphragm to determine the breathing phase. This feature in the projection images can be used to control delivery of therapeutic radiation dependent on the patient's breathing cycle, to ensure that the tumor is in the correct position when the radiation is delivered.Type: GrantFiled: September 13, 2006Date of Patent: April 8, 2008Assignee: Elekta AB (Pub)Inventors: Kevin John Brown, David Jaffray, Jeffrey H. Siewerdsen, Marcel van Herk, Jan-Jakob Sonke
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Patent number: 7349564Abstract: An apparatus, method and software module for selecting phase-correlated images from the output of a scanner such as a cone beam CT scanner operates by collapsing the images derived from the series from two dimensions to one dimension by summing the intensities of pixels along a dimension transverse to the one dimension, producing a further image from a composite of the one-dimensional images obtained from images in the series, analysing the further image for periodic patterns, and selecting from the series images having like phase in that periodic pattern. If desired, a plurality of reconstructions can be derived at different phases. The analysis of the further image for periodic patterns can include comparing the one-dimensional images therein, to identify a movement of features in that dimension. This allows (inter alia) the accurate determination of the breathing cycle in a patient and a concomitant improvement in the quality of CT scans by using phase-correlated images.Type: GrantFiled: January 20, 2004Date of Patent: March 25, 2008Assignee: Elekta AB (PUBL)Inventors: Lambert Zijp, Kevin John Brown, David Jaffray, Jeffrey H. Siewerdsen, Marcel van Herk, Jan-Jakob Sonke
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Patent number: 7295648Abstract: A radiation therapy/surgery device optimised to meet the needs of the Neurosurgeon is provided, i.e. one for the treatment of tumours in the brain. It combines the qualities of a good penumbra and accuracy, simple prescription and operation, together with high reliability and minimal technical support. The device comprises a rotateable support, on which is provided a mount extending from the support out of the plane of the circle, and a radiation source attached to the mount via a pivot, the pivot having an axis which passes through the axis of rotation of the support, the radiation source being aligned so as to produce a beam which passes through the co-incidence of the rotation axis and the pivot. It will generally be easier to engineer the apparatus if the rotateable support is planar, and more convenient if the rotateable support is disposed in an upright position. The rotation of the rotateable support will be eased if this part of the apparatus is circular.Type: GrantFiled: October 21, 2004Date of Patent: November 13, 2007Assignee: Elektra AB (Publ)Inventor: Kevin John Brown