公开(公告)号：US20170336489A1

公开(公告)日：2017-11-23

申请号：US15523228

申请日：2015-11-01

Applicant: ASPECT IMAGING LTD.

Inventor： Peter BENDEL ,  Boaz SHAPIRA

IPC: G01R33/563 ,  G01R33/483 ,  G01R33/48

CPC classification number: G01R33/56333 ,  G01R33/4816 ,  G01R33/4835 ,  G01R33/56308

Abstract: An MRI-based method for determining a velocity profile for a fluid flowing through a pipe, said method comprising: selecting a slice through which said fluid is flowing; selecting a pulse sequence; separating said pulse sequence into a preparation part and a readout part; applying said preparation part to said slice; waiting a predetermined time Rt; and, applying said readout part to said slice.

公开(公告)号：US20190391221A1

公开(公告)日：2019-12-26

申请号：US16446965

申请日：2019-06-20

Applicant: Aspect Imaging Ltd.

Inventor： Peter BENDEL

IPC: G01R33/56 ,  A61B5/055 ,  A61B5/00

Abstract: Systems and methods of detecting a portion within tissue that has a variation of local magnetic susceptibility using an MRI device, including: transmitting a first spin-echo pulse sequence to the tissue, wherein the first spin-echo pulse sequence includes a first number of refocus pulses and a first TE value; transmitting a second spin-echo pulse sequence to the tissue, wherein the second spin-echo pulse sequence includes a second number of refocus pulses and a second TE value; obtaining a first image and a second image; determining one or more locations within the second image having a signal intensity that is different than the signal intensity of the same one or more locations within the first image; and identifying a portion of tissue that has a varied local magnetic susceptibility based on the determined one or more locations within the second image.

公开(公告)号：US20170292866A1

公开(公告)日：2017-10-12

申请号：US15484665

申请日：2017-04-11

Applicant: Aspect Imaging Ltd.

Inventor： Peter BENDEL ,  Boaz SHAPIRA

IPC: G01F1/716 ,  G01N24/08

CPC classification number: G01F1/716 ,  G01N24/081 ,  G01R33/4838 ,  G01R33/56308

Abstract: Method of determining a velocity profile of a fluid flowing through a conduit, the method including applying a saturation pulse on spins of magnetic field-sensitive nuclei in the fluid, measuring a signal of the fluid to determine position of the magnetic field-sensitive nuclei, the measurement carried out at a recovery time ‘TR’ and at a distance ‘d’ within the conduit, determining within the conduit a radial distance ‘r’ characterized by a local minimum in the measured signal, wherein the radial distance ‘r’ is measured from the center of the conduit, and determining a velocity profile of the fluid at the radial distance, based on the magnetic field-sensitive nuclei.