公开(公告)号：US10861193B2

公开(公告)日：2020-12-08

申请号：US15516628

申请日：2015-09-29

申请人： VISION RT LIMITED

发明人： Edward Mead ,  Ivan Meir

IPC分类号： G06T7/80 ,  A61N5/10 ,  G06T7/70 ,  G06K9/32 ,  G06T5/00 ,  G06T5/50 ,  G06T17/20 ,  H04N13/243

摘要： A calibration sheet is located at a first position where its surface substantially corresponds to the expected position of a patient surface lying on a mechanical couch during treatment. Images of the calibration sheet are obtained and processed to ascertain relative locations and orientations of the image detectors obtaining the images and optical distortion parameters indicative of optical distortions present in the obtained images of the calibration sheet. The calibration sheet is then re-located to a known position relative to the iso-centre of the treatment apparatus and images of the re-located calibration sheet are obtained and processed to determine a transform corresponding to the relocation of the calibration sheet from the first position to the iso-centre of the treatment apparatus. Data indicative of optical distortions present in the images and data indicative of the locations and orientations of the image detectors relative to the iso-centre of the treatment apparatus are stored.

公开(公告)号：US09789338B1

公开(公告)日：2017-10-17

申请号：US15098094

申请日：2016-04-13

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

IPC分类号： G06K9/00 ,  A61N5/10 ,  A61B34/10

CPC分类号： A61N5/1049 ,  A61B90/18 ,  A61B2034/105 ,  A61N2005/1059 ,  A61N2005/1097 ,  G06T7/521 ,  G06T7/593

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.

公开(公告)号：US09950915B2

公开(公告)日：2018-04-24

申请号：US14722177

申请日：2015-05-27

申请人： RT LTD.

发明人： Rami Shmueli

IPC分类号： B66D1/26 ,  B66D1/74 ,  B66D1/76 ,  B64F1/14 ,  B64F3/00

CPC分类号： B66D1/741 ,  B64F1/14 ,  B64F3/00 ,  B66D1/20 ,  B66D1/365 ,  B66D1/505 ,  B66D1/74 ,  B66D1/7457 ,  B66D1/7489 ,  B66D1/76

摘要： A winch system for controlling the elevation of an aerostats restrained by a cable is provided. The system includes a capstan arrangement configured for reducing the tension in a segment of a cable extending between an aerostats side and a drum side thereof; a spool drum configured for wrapping therearound a segment of the cable extending from the drum side of the capstan arrangement; a first drive mechanism configured to selectively activate the capstan arrangement in a released mode, in which the cable is let out towards the aerostats, and a pulling mode in which the cable is pulled in towards the spool drum; and a second drive mechanism configured to rotate the spool drum in the released mode and in the pulling mode such that the segment of the cable extending from the drum side of the capstan arrangement is pulled in a counter direction to the direction of the tension exerted on the cable.