Invention Grant
- Patent Title: Multi-echo spin-, asymmetric spin-, and gradient-echo echo-planar imaging MRI pulse sequence
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Application No.: US15754239Application Date: 2016-08-29
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Publication No.: US11378638B2Publication Date: 2022-07-05
- Inventor: Benjamin Ellingson , Kevin Leu
- Applicant: The Regents of the University of California
- Applicant Address: US CA Oakland
- Assignee: The Regents of the University of California
- Current Assignee: The Regents of the University of California
- Current Assignee Address: US CA Oakland
- Agency: Quarles & Brady LLP
- International Application: PCT/US2016/049193 WO 20160829
- International Announcement: WO2017/040368 WO 20170309
- Main IPC: G01R33/561
- IPC: G01R33/561 ; G01R33/48 ; G01R33/50 ; A61B5/00 ; A61B5/055 ; G01R33/56 ; G01R33/563

Abstract:
An echo planar imaging technique in which a quadruple echo gradient and spin echo echo-planar imaging pulse sequence is utilized. The pulse train includes generation of two echo trains between an excitation pulse (90) and a refocusing pulse (180) to achieve two gradient echo images (also called T2*-weighted images); with one echo train directly after the 180 pulse, leading to asymmetric spin echo images (T2′-weighted images); and a last echo train afterward that generates spin echo images (T2-weighted). The technique has a number of advantages over existing techniques with regard to voxel size, mapping relative oxygen extraction, determining permeability, determining relative cerebral blood volume, vessel parameters (diameter, density, size, arterial/venous, etc.), stroke imaging, imaging perfusion, fMRI imaging, and additional benefits.
Public/Granted literature
- US20180252789A1 Multi-Echo Spin-, Asymmetric Spin-, and Gradient-Echo Echo-Planar Imaging MRI Pulse Sequence Public/Granted day:2018-09-06
Information query
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