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公开(公告)号：US12121751B2
公开(公告)日：2024-10-22
申请号：US18122957
申请日：2023-03-17
申请人： VISION RT LIMITED
发明人： Ivan Meir , Kathryn Cooper , Norman Smith , Gideon Hale , Martin Allen
IPC分类号： A61N5/10 , A61B90/00 , G06T7/285 , G06T7/73 , H04N13/204
CPC分类号： A61N5/1049 , A61B90/39 , A61N5/1069 , A61N5/1081 , G06T7/285 , G06T7/73 , H04N13/204 , A61B2090/3904 , A61B2090/3937 , A61B2576/00 , A61N2005/1059 , A61N2005/1074 , G06T2207/10021 , G06T2207/30196 , G06T2207/30204
摘要： Images obtained by a camera system (10) arranged to obtain images of a patient (20) undergoing radio-therapy are processed by a modeling unit (56,58) which generates a model of the surface of a patient (20) being monitored. Additionally the patient monitoring system processes image data not utilized to generate a model of the surface of a patient being monitored to determine further information concerning the treatment of the patient (20). Such additional data can comprise data identifying the relative location of the patient and a treatment apparatus (16). This can be facilitated by providing a number or retro-reflective markers (30-40) on a treatment apparatus (16) and a mechanical couch (18) used to position the patient (20) relative to the treatment apparatus (16) and monitoring the presence and location of the markers in the portions of the images obtained by the stereoscopic camera (10).
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公开(公告)号：US20240065651A1
公开(公告)日：2024-02-29
申请号：US18454826
申请日：2023-08-24
申请人： Vision RT Limited
CPC分类号： A61B6/0492 , A61B6/032 , A61B6/461 , A61B2560/0493 , A61B2562/0204
摘要： Disclosed herein are embodiments of a monitoring system for use with a medical apparatus to monitor the position of a patient. The monitoring system can include at least one visual sensor providing visual data, at least one processing unit configured to generate, based on the visual data, one or more views; and at least one display for displaying the one or more generated views.
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3.发明公开公开(公告)号：US20230181933A1
公开(公告)日：2023-06-15
申请号：US18107879
申请日：2023-02-09
申请人： VISION RT LIMITED
IPC分类号： A61N5/10
CPC分类号： A61N5/1075 , A61N2005/1076
摘要： A method of calibrating a monitoring system (10,14) is described in which a calibration phantom (70) is located with its center located approximately at the isocenter of a treatment room through which a treatment apparatus (16) is arranged to direct radiation, wherein the surface of the calibration phantom (70) closest to an image capture device (72) of the monitoring system (10,14) is inclined approximately 45° relative to the camera plane of an image capture device of the monitoring system. Images of the calibration phantom (70) are then captured using the image capture device (72) and the images are processed to generate a model of the imaged surface of the calibration phantom. The generated model of the imaged surface of the calibration phantom (70) is then utilized to identify the relative location of the center of the calibration phantom (70) and the camera plane of the image capture device (72) which is then utilized to determine the relative location of the camera plane of the image capture device and the isocenter of a treatment room.
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4.发明授权公开(公告)号：US11612766B2
公开(公告)日：2023-03-28
申请号：US17549618
申请日：2021-12-13
申请人： VISION RT LIMITED
IPC分类号： A61N5/10
摘要： A method of calibrating a monitoring system (10,14) is described in which a calibration phantom (70) is located with its center located approximately at the isocenter of a treatment room through which a treatment apparatus (16) is arranged to direct radiation, wherein the surface of the calibration phantom (70) closest to an image capture device (72) of the monitoring system (10,14) is inclined approximately 45° relative to the camera plane of an image capture device of the monitoring system. Images of the calibration phantom (70) are then captured using the image capture device (72) and the images are processed to generate a model of the imaged surface of the calibration phantom. The generated model of the imaged surface of the calibration phantom (70) is then utilized to identify the relative location of the center of the calibration phantom (70) and the camera plane of the image capture device (72) which is then utilized to determine the relative location of the camera plane of the image capture device and the isocenter of a treatment room.
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5.发明申请公开(公告)号：US20230041706A1
公开(公告)日：2023-02-09
申请号：US17968433
申请日：2022-10-18
申请人： VISION RT LIMITED
IPC分类号： A61N5/10 , G06T7/80 , H04N13/204
摘要： Some embodiments are directed to an image director of a patient monitoring system to obtain calibration images of a calibration sheet or other calibration object at various orientations and locations. The images are then stored and processed to calculate camera parameters defining the location and orientation of the image detector and identifying internal characteristics of the image detector, and the information are stored. The patient monitoring system can be re-calibrated by using the image detector to obtain an additional image of a calibration sheet or calibration object. The additional image and the stored camera parameters are then used to detect any apparent change in the internal characteristics of the image detector (10)(S6-4).
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6.发明授权公开(公告)号：US11224765B2
公开(公告)日：2022-01-18
申请号：US16635884
申请日：2018-07-31
申请人： VISION RT LIMITED
IPC分类号： A61N5/10
摘要： A method of calibrating a monitoring system (10,14) is described in which a calibration phantom (70) is located with its center located approximately at the isocenter of a treatment room through which a treatment apparatus (16) is arranged to direct radiation, wherein the surface of the calibration phantom (70) closest to an image capture device (72) of the monitoring system (10,14) is inclined approximately 45° relative to the camera plane of an image capture device of the monitoring system. Images of the calibration phantom (70) are then captured using the image capture device (72) and the images are processed to generate a model of the imaged surface of the calibration phantom. The generated model of the imaged surface of the calibration phantom (70) is then utilized to identify the relative location of the center of the calibration phantom (70) and the camera plane of the image capture device (72) which is then utilized to determine the relative location of the camera plane of the image capture device and the isocenter of a treatment room.
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公开(公告)号：US11147478B2
公开(公告)日：2021-10-19
申请号：US16197055
申请日：2018-11-20
申请人： VISION RT LIMITED
摘要： A patient monitor is disclosed for detecting patient movement or abnormal breathing. Images of a patient are obtained by a stereoscopic camera. These images are then processed by a 3D position determination module which determines measurements indicative of positions of at least part of a patient. The obtained measurements are then passed to a model generation module which generates a breathing model of the variation in position of the at least part of a patient during a breathing cycle. Subsequently abnormal breathing or patient movement can be detected by processing further images obtained by the stereoscopic camera to determine more measurements indicative of positions of at least part of a patient. These measurements are then compared with a stored breathing model by a comparison module. If abnormal breathing or patient movement is detected the comparison module sends a signal to a treatment apparatus to interrupt treatment until normal breathing resumes or alternatively to a mechanical couch to reposition the patient to account for the detected movement.
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公开(公告)号：US20210128948A1
公开(公告)日：2021-05-06
申请号：US17087812
申请日：2020-11-03
申请人： VISION RT LIMITED
发明人： Ivan MEIR , Kathryn COOPER , Norman SMITH , Gideon HALE , Martin ALLEN
IPC分类号： A61N5/10 , H04N13/204 , G06T7/73 , G06T7/285 , A61B90/00
摘要： Images obtained by a camera system (10) arranged to obtain images of a patient (20) undergoing radio-therapy are processed by a modeling unit (56,58) which generates a model of the surface of a patient (20) being monitored. Additionally the patient monitoring system processes image data not utilized to generate a model of the surface of a patient being monitored to determine further information concerning the treatment of the patient (20). Such additional data can comprise data identifying the relative location of the patient and a treatment apparatus (16). This can be facilitated by providing a number or retro-reflective markers (30-40) on a treatment apparatus (16) and a mechanical couch (18) used to position the patient (20) relative to the treatment apparatus (16) and monitoring the presence and location of the markers in the portions of the images obtained by the stereoscopic camera (10).
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公开(公告)号：US10675485B2
公开(公告)日：2020-06-09
申请号：US15647160
申请日：2017-07-11
申请人： Vision RT Limited
摘要： A radiation dosage monitoring system comprising a 3D camera operable to obtain images of a patient undergoing radiation treatment, the 3D camera being operable to detect Cherenkov radiation and any subsequent secondary and scattered radiation originating due the initial Cherenkov radiation emitted from a surface of the patient when the patient is irradiated by a radiation beam; and a processing module operable to process the images obtained by the 3D camera utilizing data indicative of chromophores present in a patient's skin to apply a correction factor to such images to account for absorption of Cherenkov radiation by chromophores in the skin when utilizing the images to generate a representation of radiation applied to the surface of the patient.
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公开(公告)号：US10441818B2
公开(公告)日：2019-10-15
申请号：US15698034
申请日：2017-09-07
申请人： Vision RT Limited
发明人： Michael James Tallhamer , Adrian Roger William Barrett , James Mathew Hughes, II , Edward William Mead , Ivan Daniel Meir
摘要： A patient monitoring system for monitoring a patient undergoing radiotherapy comprising a projector operable to project a pattern of light onto a patient undergoing radiation treatment, a patient restraint operable to restrain the patient relative to a treatment apparatus, an image detector operable to obtain images of the patient, and a model generation module operable to process images of the patient obtained by the image detector to generate a model of the surface of a portion of the patient, wherein at least a portion of the patient restraint is colored and the model generation module is inhibited from generating a model of the colored portion of the patient restraint.
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