公开(公告)号：US20180136295A1

公开(公告)日：2018-05-17

申请号：US15850931

申请日：2017-12-21

Applicant: University Health Network

Inventor： Tony Tadic ,  Teodor Marius Stanescu

IPC: G01R33/387 ,  G01R33/58 ,  G01R33/565 ,  G01R33/48

CPC classification number: G01R33/387 ,  G01R33/4808 ,  G01R33/56572 ,  G01R33/58

Abstract: Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.

公开(公告)号：US09857443B2

公开(公告)日：2018-01-02

申请号：US14212662

申请日：2014-03-14

Applicant: University Health Network

Inventor： Tony Tadic ,  Teodor Marius Stanescu

IPC: G01V3/00 ,  G01R33/387 ,  G01R33/565 ,  G01R33/58 ,  G01R33/48

CPC classification number: G01R33/387 ,  G01R33/4808 ,  G01R33/56572 ,  G01R33/58

Abstract: Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.

公开(公告)号：US10596393B2

公开(公告)日：2020-03-24

申请号：US14417631

申请日：2013-07-29

Applicant: UNIVERSITY HEALTH NETWORK

Inventor： Teodor Marius Stanescu ,  David Anthony Jaffray

IPC: A61N5/10 ,  A61B5/055 ,  A61B6/00 ,  G01R33/48 ,  G01R33/567 ,  A61B5/00

Abstract: A Radio-Therapy (RT) system includes an integrated radiation source and a Magnetic Resonance Imaging (MRI) system that implements a method for providing a variable imaging Field Of View (FOV). The FOV can be tailored for various RT-specific applications such as, but not limited to, patient setup verification and real-time tumor tracking, for example, as well as for various imaging volumes of interest.

公开(公告)号：US20150217136A1

公开(公告)日：2015-08-06

申请号：US14417631

申请日：2013-07-29

Applicant: UNIVERSITY HEALTH NETWORK

Inventor： Teodor Marius Stanescu ,  David Anthony Jaffray

IPC: A61N5/10 ,  A61B5/055 ,  G01R33/567

CPC classification number: A61N5/1049 ,  A61B5/0035 ,  A61B5/055 ,  A61B6/4417 ,  A61N2005/1055 ,  A61N2005/1091 ,  G01R33/4808 ,  G01R33/567

Abstract: Various embodiments are described herein for a Radio-Therapy (RT) system and an associated method and in particular to an integrated radiation source with an MRI system featuring a variable imaging Field Of View (FOV). The FOV can be tailored for various RT-specific applications such as, but not limited to, patient setup verification and real-time tumor tracking, for example, as well as for various imaging volumes of interest.

Abstract translation: 本文描述了用于放射治疗（RT）系统和相关方法的各种实施例，特别涉及具有可变成像视场（FOV）的MRI系统的综合辐射源。 FOV可以针对各种RT特异性应用而定制，例如但不限于患者设置验证和实时肿瘤跟踪，例如以及感兴趣的各种成像体积。

公开(公告)号：US10082550B2

公开(公告)日：2018-09-25

申请号：US15850931

申请日：2017-12-21

Applicant: University Health Network

Inventor： Tony Tadic ,  Teodor Marius Stanescu

IPC: G01V3/00 ,  G01R33/387 ,  G01R33/565 ,  G01R33/58 ,  G01R33/48

CPC classification number: G01R33/387 ,  G01R33/4808 ,  G01R33/56572 ,  G01R33/58

Abstract: Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.