公开(公告)号：US09274197B2

公开(公告)日：2016-03-01

申请号：US13691327

申请日：2012-11-30

Applicant: General Electric Company

Inventor： Kang Wang ,  Peng Lai ,  James Hartman Holmes ,  Frank R. Korosec

IPC: G01V3/00 ,  G01R33/561 ,  G01R33/48

CPC classification number: G01R33/561 ,  G01R33/4824

Abstract: A magnetic resonance imaging data sampling method includes randomly undersampling a first half of a k-space plane such that a plurality of points in the first half are sampled points and the remaining plurality of points in the first half are unsampled points. The method also includes determining, for each sampled point in the first half, a corresponding point in a second half of the k-space plane that corresponds to the point-wise complex conjugate location of the sampled point.

Abstract translation: 磁共振成像数据采样方法包括：随机地对k空间平面的前半部分进行欠采样，使得前半部分中的多个点为采样点，而前半部分中的其余多个点为非采样点。 该方法还包括对于前半部分的每个采样点确定对应于采样点的逐点复共轭位置的k空间平面的后半部分中的相应点。

公开(公告)号：US20140152303A1

公开(公告)日：2014-06-05

申请号：US13691327

申请日：2012-11-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Kang Wang ,  Peng Lai ,  James Hartman Holmes ,  Frank R. Korosec

IPC: G01R33/48

CPC classification number: G01R33/561 ,  G01R33/4824

Abstract: A magnetic resonance imaging data sampling method includes randomly undersampling a first half of a k-space plane such that a plurality of points in the first half are sampled points and the remaining plurality of points in the first half are unsampled points. The method also includes determining, for each sampled point in the first half, a corresponding point in a second half of the k-space plane that corresponds to the point-wise complex conjugate location of the sampled point.

Abstract translation: 磁共振成像数据采样方法包括：随机地对k空间平面的前半部分进行欠采样，使得前半部分中的多个点为采样点，而前半部分中的其余多个点为非采样点。 该方法还包括对于前半部分的每个采样点确定对应于采样点的逐点复共轭位置的k空间平面的后半部分中的相应点。

公开(公告)号：US10405772B2

公开(公告)日：2019-09-10

申请号：US13622251

申请日：2012-09-18

Applicant: Wisconsin Alumni Research Foundation, Inc. ,  General Electric Company

Inventor： Frank R. Korosec ,  James H. Holmes ,  Daniel V. Litwiller ,  Mahdi Salmani Rahimi

IPC: A61B5/00 ,  A61B5/055 ,  G01R33/563 ,  A61B5/026 ,  A61B5/0456 ,  G01R33/483

Abstract: Techniques and systems for non-contrast enhanced magnetic resonance angiography and venography (MRAV) are described. For example, within one cardiac cycle of a subject, a single shot acquisition of non-suppressed arterial MR signals and a single shot acquisition of non-suppressed venous MR signals are employed. Radio frequency (RF) saturation pulses may be applied to one or more slabs such that MR signals indicative of venous blood that flows into the arterial imaging slice are substantially suppressed and MR signals indicative of arterial blood that flows in the venous imaging slice are substantially suppressed. The RF saturation pulses and the single shot acquisitions may be timed such that one or more of the single shot acquisitions occur during substantially steady state inflow of blood into the respective imaging slice. In this manner, k-space data may be acquired from arterial specific and venous specific imaging slices occurring within a single cardiac cycle.

公开(公告)号：US20140081123A1

公开(公告)日：2014-03-20

申请号：US13622251

申请日：2012-09-18

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION INC. ,  GENERAL ELECTRIC COMPANY

Inventor： Frank R. Korosec ,  James H. Holmes ,  Daniel V. Litwiller ,  Mahdi Salmani Rahimi

IPC: A61B5/055

CPC classification number: A61B5/055 ,  A61B5/0263 ,  A61B5/0456 ,  A61B5/7285 ,  G01R33/4838 ,  G01R33/5635

Abstract: Techniques and systems for non-contrast enhanced magnetic resonance angiography and venography (MRAV) are described. For example, within one cardiac cycle of a subject, a single shot acquisition of non-suppressed arterial MR signals and a single shot acquisition of non-suppressed venous MR signals are employed. Radio frequency (RF) saturation pulses may be applied to one or more slabs such that MR signals indicative of venous blood that flows into the arterial imaging slice are substantially suppressed and MR signals indicative of arterial blood that flows in the venous imaging slice are substantially suppressed. The RF saturation pulses and the single shot acquisitions may be timed such that one or more of the single shot acquisitions occur during substantially steady state inflow of blood into the respective imaging slice. In this manner, k-space data may be acquired from arterial specific and venous specific imaging slices occurring within a single cardiac cycle.

Abstract translation: 描述了用于非对比增强磁共振血管造影和静脉造影（MRAV）的技术和系统。 例如，在受试者的一个心动周期内，采用非抑制性动脉MR信号的单次采集和非抑制静脉MR信号的单次采集。 射频（RF）饱和脉冲可以施加到一个或多个平板，使得表示流入动脉成像切片中的静脉血的MR信号基本上被抑制，并且基本上抑制了指示在静脉成像切片中流动的动脉血的MR信号 。 RF饱和脉冲和单次拍摄获取可以被定时，使得单次采集中的一个或多个在血液进入相应成像切片的基本稳定状态期间发生。 以这种方式，可以从在单个心动周期内发生的动脉特异性和静脉特异性成像切片获取k空间数据。