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1. 发明申请

WO2016200462A1 AMBIENT LIGHT SUPPRESSION USING COLOR SPACE INFORMATION TO DERIVE PIXEL-WISE ATTENUATION FACTORS 审中-公开
标题翻译：使用彩色空间信息引导像素衰减因子的环境光抑制
公开(公告)号：WO2016200462A1
公开(公告)日：2016-12-15
申请号：PCT/US2016/023450
申请日：2016-03-21
申请人： ACCURAY INCORPORATED
发明人： CHAPPELOW, Jonathan , JORDAN, Petr , GAO, Jian , SINGH, Sarbjit , LAING, Trevor , MAURER, Calvin
IPC分类号： G21K1/04
CPC分类号： H04N9/646 , A61B6/022 , A61B6/032 , A61B6/50 , A61N5/1045 , G06T5/002 , G06T5/007 , G06T5/30 , G06T7/13 , G06T7/70 , G06T7/90 , G21K1/046 , H04N5/2254 , H04N9/735
摘要： A method (400) of ambient light suppression in an imaging system, including illuminating leaves of a multi-leaf collimator (MLC) with a first light of a lighting system inside a housing of the MCL, receiving ambient light inside the housing of the MLC through an aperture of the MLC, and capturing (410), using an imaging system having optics situated inside the housing of the MLC, an image of the leaves of the MLC illuminated with the first light and the ambient light. The method may further include, suppressing the ambient light in the first image to generate a second image of the leaves of the MLC and detecting a feature of the leaves of the MLC in the second image.
摘要翻译：一种在成像系统中的环境光抑制的方法（400），包括利用MCL的壳体内的照明系统的第一光照亮多叶准直器（MLC）的叶子，接收MLC的壳体内的环境光通过MLC的孔径和使用位于MLC的壳体内部的具有光学器件的成像系统捕获（410），用第一光和环境光照亮的MLC的叶片的图像。该方法还可以包括：抑制第一图像中的环境光以产生MLC的叶子的第二图像，并且检测第二图像中MLC的叶子的特征。

2. 发明申请

WO2019178270A1 LIMITING IMAGING RADIATION DOSE AND IMPROVING IMAGE QUALITY DURING TREATMENT DELIVERY 审中-公开
公开(公告)号：WO2019178270A1
公开(公告)日：2019-09-19
申请号：PCT/US2019/022109
申请日：2019-03-13
申请人： ACCURAY INCORPORATED
发明人： BENEKE, Matthew , JORDAN, Petr , LAING, Trevor , MAURER, Calvin R. Jr.
IPC分类号： A61N5/10 , G21K1/04 , A61B6/06 , A61B6/00
摘要： A method including imaging a first field of view (FOV) of a volume of interest (VOI) that includes a region of interest (ROI) from a first position and imaging the first FOV of the VOI from a second position. The method including receiving a first identification of a first portion of the imaged VOI designating the ROI to be imaged and a second identification of a second portion of the imaged VOI from the second position designating the ROI to be imaged. In response to the first identification, adjusting an aperture of a collimator of an imaging source to a second FOV corresponding to the ROI from the first position and imaging the ROI using the second FOV. In response to the second identification, adjusting the aperture of the collimator to a third FOV corresponding to the ROI from the second position and imaging the ROI using the third FOV.

3. 发明申请

WO2018129375A1 NO-VIEW VIEW INTERFRACTION TREATMENT TARGET MOTION MANAGEMENT USING VOLUMETRIC IMAGING 审中-公开
公开(公告)号：WO2018129375A1
公开(公告)日：2018-07-12
申请号：PCT/US2018/012660
申请日：2018-01-05
申请人： ACCURAY INCORPORATED
发明人： JORDAN, Petr , MAURER, JR., Calvin R.
IPC分类号： A61B6/03 , A61B6/00 , A61N5/10
摘要： A method of the present disclosure includes identifying, based on a reference image, a full motion range of a target, wherein the full motion range of the target defines a full internal target volume (ITV). The method further includes identifying a non-target object in a motion image or the reference image. The method further includes performing a volumetric alignment of the ITV and the non-target object. The method further includes modifying a non-target to target displacement vector based on the volumetric alignment. The method further includes tracking the target based on the modified non-target to target displacement vector.

4. 发明申请

WO2018044718A1 OFFLINE ANGLE SELECTION IN ROTATIONAL IMAGING AND TRACKING SYSTEMS 审中-公开
标题翻译：旋转成像和跟踪系统中的离线角选择
公开(公告)号：WO2018044718A1
公开(公告)日：2018-03-08
申请号：PCT/US2017/048623
申请日：2017-08-25
申请人： ACCURAY INCORPORATED
发明人： JORDAN, Petr , MYRONENKO, Andriy , MAURER, Calvin , SCHNARR, Eric , O'CONNELL, Rob
IPC分类号： A61N5/10
摘要： A processing device determines a plurality of angles from which tracking images can be generated by an imaging device. The processing device generates a plurality of projections of a treatment planning image of a patient, the treatment planning image comprising a delineated target, wherein each projection of the plurality of projections has an angle that corresponds to one of the plurality of angles from which the tracking images can be taken. The processing device determines, for each angle of the plurality of angles, a value of a tracking quality metric for tracking the target based on an analysis of a projection generated at that angle. The processing device selects a subset of the plurality of angles that have a tracking quality metric value that satisfies a tracking quality metric criterion.
摘要翻译：处理装置确定可由成像装置从其生成跟踪图像的多个角度。处理装置生成患者的治疗计划图像的多个投影，治疗计划图像包括描绘的目标，其中多个投影中的每个投影具有与多个角度中的一个对应的角度，可以拍摄图像。处理装置基于对在该角度处产生的投影的分析，针对多个角度中的每个角度确定用于追踪目标的追踪质量度量的值。处理设备选择具有满足跟踪质量度量标准的跟踪质量度量值的多个角度的子集。

5. 发明申请

WO2016200464A1 IMAGE -BASED APERTURE VERIFICATION SYSTEM FOR MULTI-LEAF COLLIMATOR 审中-公开
标题翻译：用于多叶片收缩机的图像光栅验证系统
公开(公告)号：WO2016200464A1
公开(公告)日：2016-12-15
申请号：PCT/US2016/023463
申请日：2016-03-21
申请人： ACCURAY INCORPORATED
发明人： CHAPPELOW, Jonathan Cecil , JORDAN, Petr , MAURER, Calvin , SINGH, Sarbjit , FITTING, Andrew W. , MYRONENKO, Andriy , GAO, Jian
IPC分类号： A61N5/10 , G21K1/04
CPC分类号： A61N5/1048 , A61N5/1045 , A61N5/1067 , G06K9/6211 , G06T5/006 , G06T7/74 , G06T2207/20048 , G06T2207/30164 , G21K1/046 , H04N5/2252 , H04N5/2257
摘要： A radiation delivery system includes a multi-leaf collimator (MLC) that includes a housing, a plurality of leaves disposed within the housing, and an image sensor disposed within the housing at a position that is offset from a beam axis. The plurality of leaves are movable to define an aperture for the MLC, and the image sensor is directed toward the plurality of leaves. The image sensor is to generate an oblique-view image of the aperture. The radiation delivery system additionally includes a processing device to receive the oblique-view image, transform the oblique-view image into a top-view image having a reference coordinate space, and determine whether the aperture for the MLC corresponds to a specified aperture based on the top-view image.
摘要翻译：辐射传送系统包括多叶准直器（MLC），其包括壳体，设置在壳体内的多个叶片，以及设置在壳体内的偏离光束轴线的位置处的图像传感器。多个叶片可移动以限定MLC的孔，并且图像传感器指向多个叶片。图像传感器用于产生光圈的斜视图像。放射线传送系统还包括接收斜视图像的处理装置，将斜视图像变换为具有参考坐标空间的顶视图像，并且基于以下方式确定MLC的孔径是否对应于指定的孔径顶视图。

6. 发明申请

WO2018217763A1 RADIATION BASED TREATMENT BEAM POSITION CALIBRATION AND VERIFICATION 审中-公开
公开(公告)号：WO2018217763A1
公开(公告)日：2018-11-29
申请号：PCT/US2018/033908
申请日：2018-05-22
申请人： ACCURAY INCORPORATED
发明人： KILBY, Warren , JORDAN, Petr , NOLL, John , MAURER, Calvin R. Jr.
IPC分类号： A61N5/10 , A61B6/00 , A61B8/00
摘要： A method is described, including acquiring, using a camera, an image of a radiation beam incident on a phantom, the radiation beam being emitted by a radiation source. The method further includes determining a beam pointing offset based on the image and calibrating a position of the radiation source based on the beam pointing offset. A calibration system is described including the phantom, the camera, and a processing device. A phantom having an X-ray luminescent material is also described.

7. 发明申请

WO2018187618A1 SEQUENTIAL MONOSCOPIC TRACKING 审中-公开
公开(公告)号：WO2018187618A1
公开(公告)日：2018-10-11
申请号：PCT/US2018/026323
申请日：2018-04-05
申请人： ACCURAY INCORPORATED
发明人： SAYEH, Sohail , SCHNARR, Eric , JORDAN, Petr , MAURER, JR., Calvin R. , WEST, Jay B. , O'CONNELL, Robert
IPC分类号： A61B6/12 , A61N5/10 , G16H20/40 , G16H30/40 , A61B90/00
摘要： A method of sequential monoscopic tracking is described. The method includes generating a plurality of projections of an internal target region within a body of a patient, the plurality of projections comprising projection data about a position of an internal target region of the patient. The method further includes generating external positional data about external motion of the body of the patient using one or more external sensors. The method further includes generating, by a processing device, a correlation model between the position of the internal target region and the external positional data by fitting the plurality of projections of the internal target region to the external positional data. The method further includes estimating the position of the internal target region at a later time using the correlation model.

8. 发明申请

WO2018129374A1 IMAGE REGISTRATION OF TREATMENT PLANNING IMAGE, INTRAFRACTION 3D IMAGE, AND INTRAFRACTION 2D X-RAY IMAGE 审中-公开
公开(公告)号：WO2018129374A1
公开(公告)日：2018-07-12
申请号：PCT/US2018/012659
申请日：2018-01-05
申请人： ACCURAY INCORPORATED
发明人： JORDAN, Petr , MAURER, JR., Calvin R. , MYRONENKO, Andriy , CHAPPELOW, Jonathan Cecil
IPC分类号： A61B6/03 , A61B6/00 , A61N5/10
摘要： A method of the present disclosure includes performing, by a processing device, a first image registration between a reference image of a patient and a motion image of the patient to perform alignment between the reference image and the motion image, wherein the reference image and the motion image include a target position of the patient. The method further includes performing, by the processing device, a second image registration between the reference image and a motion x-ray image of the patient, via a first digitally reconstructed radiograph (DRR) for the reference image of the patient. The method further includes tracking at least a translational change in the target position based on the first registration and the second registration.

9. 发明申请

WO2018226257A1 USING A ROTATING 2D X-RAY IMAGER AS AN IMAGING DEVICE TO PERFORM TARGET TRACKING DURING RADIATION TREATMENT DELIVERY 审中-公开
公开(公告)号：WO2018226257A1
公开(公告)日：2018-12-13
申请号：PCT/US2018/012662
申请日：2018-01-05
申请人： ACCURAY INCORPORATED
发明人： NAYLOR, Michael P. , CORE, Matthew , JORDAN, Petr , MAURER, Calvin R., Jr.
IPC分类号： A61B6/03 , A61B6/00 , A61N5/10 , G06T7/20 , H05H9/00
摘要： A method includes receiving, from a volumetric imager, a first image including a target of a patient. The method further includes receiving a second image including the target of the patient. The method further includes tracking, by a processing device, a position of the target using the first image and the second image.

10. 发明申请

WO2018044726A1 ONLINE ANGLE SELECTION IN ROTATIONAL IMAGING AND TRACKING SYSTEMS 审中-公开
标题翻译：旋转成像跟踪系统的在线角度选择
公开(公告)号：WO2018044726A1
公开(公告)日：2018-03-08
申请号：PCT/US2017/048674
申请日：2017-08-25
申请人： ACCURAY INCORPORATED
发明人： JORDAN, Petr , MYRONENKO, Andriy , MAURER, Calvin , SCHNARR, Eric , O'CONNELL, Rob
IPC分类号： A61N5/10
摘要： A radiation therapy apparatus determines a set of angles that have a tracking quality metric value that satisfies a tracking quality metric criterion. During an alignment phase or a treatment phase for a treatment stage of a target by the radiation therapy apparatus, the radiation therapy apparatus performs selects at least a first angle and a second angle from the set of angles for a first rotation of the gantry. The radiation therapy apparatus generates, using an imaging device mounted to the gantry, a first tracking image of the target from the first angle during the first rotation of the gantry. The radiation therapy apparatus generates, using the imaging device, a second tracking image of the target from the second angle during the first rotation of the gantry. The radiation therapy apparatus performs the target tracking based on the first tracking image and the second tracking image.
摘要翻译：放射治疗设备确定具有满足跟踪质量度量标准的跟踪质量度量值的一组角度。在放射治疗设备的目标的治疗阶段的对准阶段或治疗阶段期间，放射治疗设备执行从机架的第一旋转的该组角度中选择至少第一角度和第二角度。放射治疗设备使用安装到机架的成像装置在机架的第一旋转期间从第一角度生成目标的第一追踪图像。放射治疗设备使用成像设备在机架的第一旋转期间从第二角度生成目标的第二追踪图像。放射治疗设备基于第一追踪图像和第二追踪图像执行目标追踪。

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