公开(公告)号：US10391336B2

公开(公告)日：2019-08-27

申请号：US15117695

申请日：2015-02-04

申请人： Elekta AB (publ)

发明人： Per Carlsson

IPC分类号： A61N5/10

摘要： An apparatus comprises a radiotherapy delivery apparatus having a radiation source for emitting a beam of radiation and wherein the source is rotatable around an axis intersecting the beam through a range of at least x degrees, an imaging device, and a control unit controlling the source and imaging device. The apparatus further comprises a treatment planning computer receiving a first image of a patient, and parameters defining the operations of the radiotherapy delivery apparatus. Parameters include an available range of rotation for the source, x-e, where e>0. The treatment planning computer generates a treatment plan for the patient based on the received image and parameters. The control unit determines a patient position using the imaging device, determines a rotation r of the patient around the axis relative to the first image, and compensates for the rotation by offsetting the source by a rotation, r, when r

公开(公告)号：US09526917B2

公开(公告)日：2016-12-27

申请号：US14266622

申请日：2014-04-30

申请人： Elekta AB (Publ)

发明人： Per Carlsson

IPC分类号： A61N5/10

CPC分类号： A61N5/1067 ,  A61B6/032 ,  A61N5/1049 ,  A61N5/107 ,  A61N5/1081 ,  A61N2005/1061

摘要： A radiotherapy apparatus comprises a rotatable gantry, supporting a source of therapeutic radiation and a source of diagnostic radiation. The two sources may be rotationally spaced apart around a rotation axis of the gantry, with at least one collimator associated with the source of therapeutic radiation and arranged to limit the cross-sectional area of a beam produced by that source. A control means may be arranged to conduct a treatment fraction using the apparatus by causing the apparatus to acquire images of a patient using the source of diagnostic radiation, retain those images at least temporarily, select a retained image acquired when the source of diagnostic radiation was at a rotational position corresponding to the instantaneous rotational position of the source of therapeutic radiation, and control the beam relative to the patient using information derived from the selected image.

摘要翻译： 放射治疗装置包括可旋转机架，支撑治疗辐射源和诊断辐射源。 两个源可以围绕台架的旋转轴线旋转间隔开，其中至少一个准直器与治疗辐射源相关联并且被布置成限制由该源产生的梁的横截面面积。 控制装置可以被布置成通过使装置使用诊断辐射源获取患者的图像，使用该装置进行治疗分数，至少暂时保留那些图像，选择当诊断辐射源为 在对应于治疗辐射源的瞬时旋转位置的旋转位置处，并且使用从所选择的图像导出的信息来控制相对于患者的束。

公开(公告)号：US10130327B2

公开(公告)日：2018-11-20

申请号：US13743610

申请日：2013-01-17

申请人： Elekta AB (publ)

发明人： Per Carlsson

IPC分类号： A61N5/00 ,  A61B6/00 ,  A61B6/03 ,  A61N5/10

摘要： Intra-fraction movement of the patient puts at risk sensitive regions that are near to a radiation dose. In a radiotherapy system that delivers a dose as a series of discrete sub-doses, an initial CT scan is performed to determine the patient's position, after which the sub-doses that are directed to regions within a preset distance of a sensitive structure are performed first, while the sub-doses directed to regions that are more remote from a sensitive structure are performed later.

公开(公告)号：US10022563B2

公开(公告)日：2018-07-17

申请号：US15273293

申请日：2016-09-22

申请人： Elekta AB (Publ)

发明人： Per Carlsson

IPC分类号： A61N5/10 ,  A61B6/03

摘要： A radiotherapy apparatus comprises a rotatable gantry, supporting a source of therapeutic radiation and a source of diagnostic radiation, the two sources being rotationally (or angularly) spaced apart around a rotation axis of the gantry, with at least one collimator associated with the source of therapeutic radiation and arranged to limit the cross-sectional area of a beam produced by that source, a control means arranged to conduct a treatment fraction using the apparatus by causing the apparatus to i. acquire images of a patient using the source of diagnostic radiation, ii. retain those images at least temporarily, iii. subsequently, after further rotation of the gantry, select a retained image acquired when the source of diagnostic radiation was at a rotational position corresponding to the instantaneous rotational position of the source of therapeutic radiation, and iv. control the beam relative to the patient using information derived from the selected image. The corresponding rotational position is ideally one in which the source of therapeutic radiation is at the same or substantially the same rotational position as was the source of diagnostic radiation at the point in time when the image was acquired. An alternative a radiotherapy apparatus comprises a rotatable gantry supporting a source of therapeutic radiation and a source of diagnostic radiation, at least one collimator associated with the source of therapeutic radiation and arranged to limit the cross-sectional area of a beam produced by that source, a reconstruction means arranged to i. obtain two-dimensional images of a patient using the source of diagnostic radiation, ii. retain those images at least temporarily, iii. apply a recency threshold to the retained images thereby to exclude images less recent than the threshold, iv. select at least three such retained images meeting the recency threshold and reconstruct a CT volume or tomographic image using the selected images, and a control means arranged to conduct a treatment fraction or treatment session using the apparatus, controlling the collimator using information derived from the CT volume.

公开(公告)号：US20160354617A1

公开(公告)日：2016-12-08

申请号：US15117695

申请日：2015-02-04

申请人： ELEKTA AB (PUBL)

发明人： Per Carlsson

IPC分类号： A61N5/10

CPC分类号： A61N5/1082 ,  A61N5/103 ,  A61N5/1049 ,  A61N5/1067 ,  A61N2005/1061

摘要： An apparatus is disclosed, which comprises a radiotherapy delivery apparatus having a radiation source for emitting a beam of radiation and rotatable around an axis intersecting the beam through a range of at least x degrees, an imaging device, and a control unit for controlling the source and imaging device. The apparatus further comprises a treatment planning computer configured to receive a first image of a patient, and receive parameters defining the operations of the radiotherapy delivery apparatus. The parameters include an available range of rotation for the source defined as x-e, where e>0. The treatment planning computer is further configured to generate a treatment plan for the patient based on the received image and parameters. The control unit determines a patient position using the imaging device, determines a rotation r of the patient around the axis relative to the first image, and compensates for the rotation by offsetting the source by a rotation equal to r when r

摘要翻译： 公开了一种装置，其包括放射治疗递送装置，其具有用于发射辐射束的辐射源，并且能够围绕与光束交叉的轴线可旋转至少x度的范围，成像装置和用于控制源的控制单元 和成像装置。 该装置还包括治疗计划计算机，其被配置为接收患者的第一图像，并且接收限定放射治疗递送装置的操作的参数。 参数包括定义为x-e的源的可用旋转范围，其中e> 0。 治疗计划计算机还被配置为基于接收到的图像和参数来生成患者的治疗计划。 控制单元使用成像装置确定患者位置，确定患者围绕轴线相对于第一图像的旋转r，并且当r

公开(公告)号：US20140321615A1

公开(公告)日：2014-10-30

申请号：US14266622

申请日：2014-04-30

申请人： Elekta AB (Publ)

发明人： Per Carlsson

IPC分类号： A61N5/10

CPC分类号： A61N5/1067 ,  A61B6/032 ,  A61N5/1049 ,  A61N5/107 ,  A61N5/1081 ,  A61N2005/1061

摘要： A radiotherapy apparatus comprises a rotatable gantry, supporting a source of therapeutic radiation and a source of diagnostic radiation, the two sources being rotationally (or angularly) spaced apart around a rotation axis of the gantry, with at least one collimator associated with the source of therapeutic radiation and arranged to limit the cross-sectional area of a beam produced by that source, a control means arranged to conduct a treatment fraction using the apparatus by causing the apparatus to i. acquire images of a patient using the source of diagnostic radiation, ii. retain those images at least temporarily, iii. subsequently, after further rotation of the gantry, select a retained image acquired when the source of diagnostic radiation was at a rotational position corresponding to the instantaneous rotational position of the source of therapeutic radiation, and iv. control the beam relative to the patient using information derived from the selected image. The corresponding rotational position is ideally one in which the source of therapeutic radiation is at the same or substantially the same rotational position as was the source of diagnostic radiation at the point in time when the image was acquired. An alternative a radiotherapy apparatus comprises a rotatable gantry supporting a source of therapeutic radiation and a source of diagnostic radiation, at least one collimator associated with the source of therapeutic radiation and arranged to limit the cross-sectional area of a beam produced by that source, a reconstruction means arranged to i. obtain two-dimensional images of a patient using the source of diagnostic radiation, ii. retain those images at least temporarily, iii. apply a recency threshold to the retained images thereby to exclude images less recent than the threshold, iv. select at least three such retained images meeting the recency threshold and reconstruct a CT volume or tomographic image using the selected images, and a control means arranged to conduct a treatment fraction or treatment session using the apparatus, controlling the collimator using information derived from the CT volume.

公开(公告)号：US20130188767A1

公开(公告)日：2013-07-25

申请号：US13743610

申请日：2013-01-17

申请人： Elekta AB (publ)

发明人： Per Carlsson

IPC分类号： A61B6/00 ,  A61B6/03

CPC分类号： A61B6/542 ,  A61B6/032 ,  A61B6/035 ,  A61N5/1037

摘要： Intra-fraction movement of the patient puts at risk sensitive regions that are near to a radiation dose. In a radiotherapy system that delivers a dose as a series of discrete sub-doses, an initial CT scan is performed to determine the patient's position, after which the sub-doses that are directed to regions within a preset distance of a sensitive structure are performed first, while the sub-doses directed to regions that are more remote from a sensitive structure are performed later.

摘要翻译： 患者的部分内运动放置在接近辐射剂量的风险敏感区域。 在以一系列离散子剂量递送剂量的放射治疗系统中，执行初始CT扫描以确定患者的位置，之后执行针对敏感结构的预设距离内的区域的子剂量 首先，针对远离敏感结构的区域的子剂量稍后进行。