公开(公告)号：US12296197B2

公开(公告)日：2025-05-13

申请号：US18309114

申请日：2023-04-28

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  Fabienne Lathuiliere ,  Kevin John Brown ,  David Roberts ,  Sebastien Tremblay

IPC: A61N5/10 ,  G06T7/00 ,  G06T7/38

Abstract: Devices, systems and techniques are used for cancer treatment. An example control device may be configured to be communicatively coupled to a radiation source of a radiotherapy device and a position sensor of the radiotherapy device. The example control device may be used to calculate, for a sliding window of a radiotherapy treatment, a positional error between: a measured target position signal determined from a series of images and sampled at the acquisition times of the images, and an estimated target position signal. The example control device may generate a computer-executable instruction configured to alter the radiotherapy treatment in response to the positional error violating a threshold.

公开(公告)号：US20250121209A1

公开(公告)日：2025-04-17

申请号：US18915420

申请日：2024-10-15

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  Patrick GROSS ,  David Roberts ,  Bjorn STEMKENS

IPC: A61N5/10 ,  G16H40/63

Abstract: A computer implemented method for modifying medical imaging protocol parameters can comprise receiving one or more modified protocol parameters for an imaging protocol and determining whether the one or more modified protocol parameters are acceptable based on at least one of: i) an acquired image acceptability check or ii) a parameter acceptability check.

公开(公告)号：US20240245935A1

公开(公告)日：2024-07-25

申请号：US18561994

申请日：2022-05-31

Applicant: Elekta Limited

Inventor： Joshua Freedman

IPC: A61N5/10 ,  G01R33/48 ,  G01R33/56 ,  G16H40/63

CPC classification number: A61N5/1068 ,  G01R33/4808 ,  G01R33/5608 ,  G16H40/63 ,  A61N2005/1055

Abstract: A radiotherapy device is provided comprising a radiation source, an MR imaging apparatus and a controller. The radiation source is configured to generate a radiotherapy beam for irradiating a subject. The MR imaging apparatus is configured to apply a 3D MR pulse sequence to obtain k-space data for the subject. The controller is communicatively coupled to the radiation source and the MR imaging apparatus and is configured to select central k-space data from the k-space data and generate a beam gating control signal based on the central k-space data. A computer-implemented method for generating a control signal for a radiotherapy device and a computer-readable medium comprising computer-executable instructions are also provided.

公开(公告)号：US20240100364A1

公开(公告)日：2024-03-28

申请号：US18477115

申请日：2023-09-28

Applicant: Elekta Limited

Inventor： Christopher Knox ,  Joshua Freedman ,  Kevin John Brown ,  David Roberts

IPC: A61N5/10 ,  G06F1/12 ,  G16H40/63

CPC classification number: A61N5/1068 ,  A61N5/1077 ,  G06F1/12 ,  G16H40/63 ,  A61N2005/1055 ,  A61N2005/1074

Abstract: Timing-based methods, systems, and computer readable mediums for a gated linear accelerator include synchronising a local clock of the linear accelerator with a clock of a patient monitoring system, determining latencies within one or more MR-gated radiotherapy processes and implementing latency based interlocks.

公开(公告)号：US20240115882A1

公开(公告)日：2024-04-11

申请号：US18309114

申请日：2023-04-28

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  Fabienne Lathuiliere ,  Kevin John Brown ,  David Roberts ,  Sebastien Tremblay

IPC: A61N5/10

CPC classification number: A61N5/1049 ,  A61N5/1065 ,  A61N2005/1055 ,  A61N2005/1089

Abstract: Devices, systems and techniques are used for cancer treatment. An example control device may be configured to be communicatively coupled to a radiation source of a radiotherapy device and a position sensor of the radiotherapy device. The example control device may be used to calculate, for a sliding window of a radiotherapy treatment, a positional error between: a measured target position signal determined from a series of images and sampled at the acquisition times of the images, and an estimated target position signal. The example control device may generate a computer-executable instruction configured to alter the radiotherapy treatment in response to the positional error violating a threshold.

公开(公告)号：US20230310898A1

公开(公告)日：2023-10-05

申请号：US18181281

申请日：2023-03-09

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  David Roberts ,  Christopher Knox

IPC: A61N5/10

CPC classification number: A61N5/1075 ,  A61N5/1049 ,  A61N2005/1076

Abstract: A quality assurance method for a radiotherapy device is disclosed. The method comprises disposing a phantom on a patient couch of the radiotherapy device, moving the patient couch to simulate motion of a subject, determining a measured value associated with the phantom, and comparing the measured value to an expected value. A radiotherapy device is also disclosed, the radiotherapy device comprising a radiation source configured to apply a radiation beam, a patient couch, a phantom disposable on the patient couch, and a controller communicatively coupled to the patient couch. A computer-readable medium storing instructions is also disclosed. A phantom for a radiotherapy device is also disclosed.

公开(公告)号：US20230028022A1

公开(公告)日：2023-01-26

申请号：US17757520

申请日：2020-12-16

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  David Roberts ,  Stefan Pencea

IPC: A61N5/10

Abstract: Disclosed herein is a method of characterising physical properties of an attenuating element in a radiotherapy device having a radiotherapy radiation source and a radiotherapy radiation detector on respective sides of the attenuating element. The method comprises obtaining an average detected radiotherapy radiation intensity at two or more locations around the attenuating element, comparing the detected intensity at one location with the average intensity, and characterising a corresponding physical property based on the comparison.

公开(公告)号：US20250099783A1

公开(公告)日：2025-03-27

申请号：US18473656

申请日：2023-09-25

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  Fabienne Lathuiliere ,  Martin Emile Lachaine ,  David Roberts

IPC: A61N5/10 ,  G06T5/00 ,  G06T7/13 ,  G06T7/73 ,  G16H20/40 ,  G16H30/40

Abstract: There are provided systems, methods and radiotherapy devices for monitoring the position of a subject during radiotherapy, which comprise obtaining an MR image slice of a subject that exhibits through-plane distortion, obtaining a pre-treatment image slice of the subject that corresponds to the MR image slice and exhibits through-plane distortion that corresponds to the through-plane distortion of the MR image slice, and comparing the MR image slice with the corresponding pre-treatment image slice.

公开(公告)号：US20240216715A1

公开(公告)日：2024-07-04

申请号：US18398663

申请日：2023-12-28

Applicant: Elekta Limited

Inventor： Joshua Freedman ,  Samantha PITMAN

IPC: A61N5/10

CPC classification number: A61N5/1067 ,  A61N5/1031 ,  A61N2005/1055 ,  A61N2005/1074

Abstract: A radiotherapy device, a computer-implemented method and a computer-readable medium are provided. The radiotherapy device comprises an accelerating structure, a magnetron and a controller communicatively coupled to the accelerating structure and the magnetron. The controller is configured to determine a predicted resonant frequency change of the accelerating structure based on an predicted operation of the radiotherapy device. The controller is further configured to adjust an output frequency of the magnetron by the predicted resonant frequency change.