US 11,628,313 B2Granted

Patient monitor

AssigneeVision Rt Limited

InventorsIvan Meir, Kathryn Cooper, Norman Smith, Gideon Hale, Martin Allen

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Abstract

Images obtained by a camera system (10) arranged to obtain images of a patient (20) undergoing radio-therapy are processed by a modeling unit (56,58) which generates a model of the surface of a patient (20) being monitored. Additionally the patient monitoring system processes image data not utilized to generate a model of the surface of a patient being monitored to determine further information concerning the treatment of the patient (20). Such additional data can comprise data identifying the relative location of the patient and a treatment apparatus (16). This can be facilitated by providing a number or retro-reflective markers (30-40) on a treatment apparatus (16) and a mechanical couch (18) used to position the patient (20) relative to the treatment apparatus (16) and monitoring the presence and location of the markers in the portions of the images obtained by the stereoscopic camera (10).

Claims20

Dependent claims

A radiotherapy treatment system, comprising:

a movable radiotherapy treatment apparatus configured to focus a beam of a radiation source on a treatment target of a patient placed on a movable couch,
wherein the movable couch is configured for positioning said patient to align said treatment target with said beam of the radiation source,
wherein predefined positions of the movable couch and said movable radiotherapy treatment apparatus during a course of radiotherapy treatment are operated according to a predefined treatment plan;
wherein the system further comprises:
a camera system configured to obtain images of said movable radiotherapy treatment apparatus, said movable couch and said patient;
and
a control system, configured to:
receive said images from said camera system;
obtain positions of the movable radiotherapy treatment apparatus and the movable couch during the course of radiotherapy treatment;
and
compare said obtained positions of the movable radiotherapy treatment apparatus and said movable couch with said predefined positions according to said predefined treatment plan,
generate from said images, a patient surface model of at least a part of said patient containing said treatment target;
and
align said patient surface model with a computer model of said movable radiotherapy treatment apparatus and said movable couch,
wherein said alignment of said patient surface model is tracked in relation to said obtained positions of the movable radiotherapy treatment apparatus and the movable couch.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/087,812Filed 3 Nov 2020 · continuation
Priority: GB 121830712 Oct 2012
Published: US 2021/0128948 A16 May 2021
Granted: 18 Apr 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

A61N 5/1049
Monitoring, verifying, controlling systems and methods: for verifying the position of the patient with respect to the radiation beam
A61B 90/39
Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00,…
A61N 5/1069
For adjusting radiation treatment in response to monitoring: target adjustment, e.g. moving the patient support
A61N 5/1081
Beam delivery systems: rotating beam systems with a specific mechanical construction, e.g. gantries

Family

PCT/GB2013/052650Parent of this continuation · filed 11 Oct 2013
Application16/230,739Parent of this continuation · filed 21 Dec 2018
US 10,183,177 B2Parent of this continuation · filed 22 Jan 2019
US 2021/0128948 A1Pre-grant publication · published 6 May 2021
US 10,926,109 B2Parent of this continuation
Application14/424,376Parent of this continuation
US 2015/0265852 A1Published application
US 2019/0134426 A1Published application
US 11,628,313 B2This patent

From the US filing history. Foreign family members aren’t listed.