Invention Grant
- Patent Title: Magnetic assembly and method for defining a magnetic field for an imaging volume
- Patent Title (中): 用于定义成像体积的磁场的磁组件和方法
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Application No.: US14174423Application Date: 2014-02-06
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Publication No.: US09255978B2Publication Date: 2016-02-09
- Inventor: B. Gino Fallone , Tony Tadic , Brad Murray
- Applicant: Alberta Health Services
- Applicant Address: CA Alberta
- Assignee: Alberta Health Services
- Current Assignee: Alberta Health Services
- Current Assignee Address: CA Alberta
- Agency: Alston & Bird LLP
- Main IPC: G01R33/54
- IPC: G01R33/54 ; G01R33/38 ; G01R33/383 ; G21K1/093 ; G06F17/50 ; A61B5/055 ; A61N5/10 ; H01F7/02

Abstract:
Disclosed herein is a magnet assembly that includes at least two magnets arranged in a fixed spaced relationship with one another thereby to define a space between the magnets that encompasses an imaging volume. Each of the magnets produces a variety of magnetic field strengths across inward-facing surfaces thereof that, in combination, produce an acceptably homogeneous magnetic field in the imaging volume. Also disclosed is a method of defining a magnetic field for an imaging volume. The method comprises generating an initial model of a magnet assembly; estimating a magnetic field for the imaging volume based on the model; calculating deviation between the estimated magnetic field and a target magnetic field for the imaging volume; and updating the model to reduce the deviation by modifying the magnet assembly to produce a variety of magnetic field strengths that, in combination, produce substantially the target magnetic field in the imaging volume.
Public/Granted literature
- US20140229141A1 MAGNETIC ASSEMBLY AND METHOD FOR DEFINING A MAGNETIC FIELD FOR AN IMAGING VOLUME Public/Granted day:2014-08-14
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