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    Radiation therapy systems and methods using an external signal
    3.
    发明授权
    Radiation therapy systems and methods using an external signal 有权

    公开(公告)号：US11376446B2

    公开(公告)日：2022-07-05

    申请号：US16978825

    申请日：2019-03-08

    申请人： Doan Trang Nguyen ,  Paul Keall

    发明人： Doan Trang Nguyen ,  Paul Keall

    IPC分类号： A61B6/00 ,  A61N5/10

    摘要： There is disclosed a method for estimating the position of a target in a body of a subject. The method includes, receiving an external signal that is related with motion of the target; and using a model of a correlation between the external signal and the motion of the target to estimate the position of the target, wherein said position estimation includes an estimate of three dimensional location and orientation of the target. The method further includes periodically receiving a 2-dimensional projection of the target; and updating the model of correlation between the external signal and the motion of the target based on a comparison of the estimated position of the target and the 2-dimensional projection of the target. The method is used in guided radiation therapy.

    Method And System Of Adaptive Control For Reducing Motion Artifacts And Patient Dose In Four Dimensional Computed Tomography
    4.
    发明申请
    Method And System Of Adaptive Control For Reducing Motion Artifacts And Patient Dose In Four Dimensional Computed Tomography 有权
    用于减少四维计算机断层扫描中的运动伪像和患者剂量的自适应控制的方法和系统

    公开(公告)号：US20070286331A1

    公开(公告)日：2007-12-13

    申请号：US10599084

    申请日：2005-04-07

    申请人： Paul Keall ,  Jeffrey Williamson

    发明人： Paul Keall ,  Jeffrey Williamson

    IPC分类号： A61B6/03

    CPC分类号： A61B6/542 ,  A61B5/0816 ,  A61B6/541

    摘要： Motion artifacts and patient dose during 4D CT imaging are reduced by adaptive control of data acquisition. The respiration signal (310) and CT data acquisition (340) are linked, such that ‘bad’ data from erratic breathing cycles that cause artifacts is not acquired by pausing CT data acquisition (360) when erratic breathing is detected, and not resuming CT data acquisition until steady-state respiration is resumed. Training data is used to develop a tolerance envelope for a respiratory signal such that for erratic breathing cycles the respiratory signal is not within the tolerance envelope (330).

    摘要翻译： 4D CT成像期间的运动伪像和患者剂量通过数据采集的自适应控制来降低。 呼吸信号（310）和CT数据采集（340）被链接，使得当检测到不稳定的呼吸时暂停CT数据获取（360）并且不恢复CT时，不能通过暂停CT数据获取导致伪影的不稳定呼吸周期的“坏”数据 数据采集​​直到稳态呼吸恢复。 培训数据用于制定呼吸信号的容差包络，以便呼吸周期不稳定时呼吸信号不在公差范围内（330）。

    METHOD AND APPARATUS FOR RESPIRATORY AUDIO-VISUAL BIOFEEDBACK FOR IMAGING AND RADIOTHERAPY
    5.
    发明申请
    METHOD AND APPARATUS FOR RESPIRATORY AUDIO-VISUAL BIOFEEDBACK FOR IMAGING AND RADIOTHERAPY 有权
    用于成像和放射治疗的呼吸音视频生物反馈的方法和装置

    公开(公告)号：US20070093723A1

    公开(公告)日：2007-04-26

    申请号：US11538548

    申请日：2006-10-04

    申请人： Paul Keall ,  Rohini George ,  Radhe Mohan ,  Keith Miller ,  Theodore Chung

    发明人： Paul Keall ,  Rohini George ,  Radhe Mohan ,  Keith Miller ,  Theodore Chung

    IPC分类号： A61B5/08

    CPC分类号： A61B5/113 ,  A61B5/486 ,  A61B6/541 ,  A61N5/1049 ,  A61N5/1064

    摘要： An improved method and apparatus for respiratory audio-visual biofeedback are disclosed. A guide patterned after a breathing cycle comfortable to the patient serves as a target. The target is displayed as a bar moving vertically upward during inhale and vertically downward during exhale, between fixed end ex-hale and end in-hale limits. The patient's current respiratory position is also displayed as a bar, oriented parallel to the target bar so that the difference between the current position and the target position is easy for the patient to see.

    摘要翻译： 公开了用于呼吸视听生物反馈的改进的方法和装置。 在患者舒适的呼吸循环之后图案化的导向器作为目标。 目标被显示为在吸气期间垂直向上移动的杆，并且在呼气期间，在固定末端和终点限制之间。 患者的当前呼吸位置也显示为平行于目标杆定向的杆，使得当前位置和目标位置之间的差异容易让患者看到。

    Method and apparatus for respiratory audio-visual biofeedback for imaging and radiotherapy
    7.
    发明授权
    Method and apparatus for respiratory audio-visual biofeedback for imaging and radiotherapy 有权
    用于成像和放射治疗的呼吸视听生物反馈的方法和装置

    公开(公告)号：US07955270B2

    公开(公告)日：2011-06-07

    申请号：US11538548

    申请日：2006-10-04

    申请人： Paul Keall ,  Rohini George ,  Radhe Mohan ,  Keith Miller ,  Theodore Chung

    发明人： Paul Keall ,  Rohini George ,  Radhe Mohan ,  Keith Miller ,  Theodore Chung

    IPC分类号： A61B5/08

    CPC分类号： A61B5/113 ,  A61B5/486 ,  A61B6/541 ,  A61N5/1049 ,  A61N5/1064

    摘要： An improved method and apparatus for respiratory audio-visual biofeedback are disclosed. A guide patterned after a breathing cycle comfortable to the patient serves as a target. The target is displayed as a bar moving vertically upward during inhale and vertically downward during exhale, between fixed end ex-hale and end in-hale limits. The patient's current respiratory position is also displayed as a bar, oriented parallel to the target bar so that the difference between the current position and the target position is easy for the patient to see.

    摘要翻译： 公开了用于呼吸视听生物反馈的改进的方法和装置。 在患者舒适的呼吸循环之后图案化的导向器作为目标。 目标被显示为在吸气期间垂直向上移动的杆，并且在呼气期间，在固定末端和终点限制之间。 患者的当前呼吸位置也显示为平行于目标杆定向的杆，使得当前位置和目标位置之间的差异容易让患者看到。

    Method and system for using computed tomography to test pulmonary function
    8.
    发明申请
    Method and system for using computed tomography to test pulmonary function 有权
    使用计算机断层扫描测试肺功能的方法和系统

    公开(公告)号：US20070086636A1

    公开(公告)日：2007-04-19

    申请号：US11250627

    申请日：2005-10-17

    申请人： Paul Keall ,  Sarang Joshi

    发明人： Paul Keall ,  Sarang Joshi

    IPC分类号： G06K9/00

    CPC分类号： A61B6/5217 ,  A61B6/50 ,  G06T7/60

    摘要： Computed axial tomography images of different respiratory phases of lungs are obtained, where the intensity of the image measures lung density. One image is deformed to the coordinate space of the other image, and the differences between the intensity values of the other image as compared to the mapped image are evaluated as measures of ventilation.

    摘要翻译： 获得不同肺部呼吸相位的计算机轴向断层扫描图像，其中图像的强度测量肺密度。 一个图像变形到另一图像的坐标空间，并且将与映射图像相比的其他图像的强度值之间的差异作为通气度量进行评估。