公开(公告)号：US09874623B2

公开(公告)日：2018-01-23

申请号：US13867885

申请日：2013-04-22

Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION

Inventor： Samuel W. Fielden ,  Craig H. Meyer

IPC: G01V3/00 ,  G01R33/56

CPC classification number: G01R33/5608

Abstract: Systems and methods for magnetic resonance imaging (MRI) using side information for improved reconstruction are disclosed. In one aspect, in accordance with one example embodiment, images obtained using heteronuclei, such as Fluorine-19 (19F), can be reconstructed using one or more methods to provide improved resolution and detail. The system can use anatomical proton MRI scans. The system can use multiple smoothing techniques to improve the signal-to-noise ratio (SNR). The system can also use weighted smoothing using information from anatomical proton MRI scans to improve resolution.

公开(公告)号：US20170328972A1

公开(公告)日：2017-11-16

申请号：US15593894

申请日：2017-05-12

Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION

Inventor： Samuel W. Fielden ,  John P. Mugler, III ,  G. Wilson Miller, IV ,  Kim Butts Pauly ,  Craig H. Meyer

IPC: G01R33/561 ,  A61N7/02 ,  A61B5/055 ,  G01R33/50 ,  A61B5/01

CPC classification number: G01R33/50 ,  A61B5/01 ,  A61B5/055 ,  A61B90/37 ,  A61B2090/374 ,  A61N7/02 ,  A61N2007/0078 ,  A61N2007/0082 ,  A61N2007/0095 ,  G01R33/4804 ,  G01R33/4816 ,  G01R33/4826

Abstract: In one aspect, in accordance with one embodiment, a method includes acquiring magnetic resonance (MR) data corresponding to bone tissue in an area of interest of a subject that is heated from the application of localized energy. The acquiring includes applying a three-dimensional (3D) ultra-short echo time (UTE) spiral acquisition sequence. The method also includes detecting, from the acquired magnetic resonance data, a change in MR response signal due to a change in at least one of relaxation rate and magnetization density caused by heating of the bone tissue; and determining, based at least in part on the change in the MR response signal, that the temperature of the bone tissue has changed.

公开(公告)号：US20160098835A1

公开(公告)日：2016-04-07

申请号：US14870803

申请日：2015-09-30

Applicant: UNIVERSITY OF VIRGINIA PATENT FOUNDATION

Inventor： Li Zhao ,  Xiao Chen ,  Samuel W. Fielden ,  Frederick H. Epstein ,  John P. Mugler, III ,  Manal Nicolas-Jilwan ,  Max Wintermark ,  Craig H. Meyer

IPC: G06T7/00 ,  G01R33/48 ,  G01R33/563 ,  G06T11/00 ,  G06K9/62

CPC classification number: G06T7/0012 ,  G01R33/4824 ,  G01R33/5611 ,  G01R33/56366 ,  G06K9/6232 ,  G06T11/005 ,  G06T2207/10088 ,  G06T2207/30104 ,  G06T2211/412 ,  G06T2211/424

Abstract: Systems and methods for accelerated arterial spin labeling (ASL) using compressed sensing are disclosed. In one aspect, in accordance with one example embodiment, a method includes acquiring magnetic resonance data associated with an area of interest of a subject, wherein the area of interest corresponds to one or more physiological activities of the subject. The method also includes performing image reconstruction using temporally constrained compressed sensing reconstruction on at least a portion of the acquired magnetic resonance data, wherein acquiring the magnetic resonance data includes receiving data associated with ASL of the area of interest of the subject.