- Patent Title: MRI RF pulse sequence for multidimensional outer volume suppression
-
Application No.: US15482659Application Date: 2017-04-07
-
Publication No.: US10690739B2Publication Date: 2020-06-23
- Inventor: David Y Zeng , Dwight G Nishimura
- Applicant: The Board of Trustees of the Leland Stanford Junior University
- Applicant Address: US CA Stanford
- Assignee: The Board of Trustees of the Leland Stanford Junior University
- Current Assignee: The Board of Trustees of the Leland Stanford Junior University
- Current Assignee Address: US CA Stanford
- Agency: Lumen Patent Firm
- Main IPC: G01R33/483
- IPC: G01R33/483 ; G01R33/56 ; G01R33/561

Abstract:
A magnetic resonance imaging (MRI) techniques uses a T2-preparation outer volume suppression (OVS) pulse sequence to reduce the longitudinal magnetization outside a region of interest. A region is excited that includes the region of interest, radiofrequency (RF) signals are detected, and MRI images generated from the RF detected signals. The T2-preparation OVS pulse sequence includes, sequentially: a first tip-down excitation pulse, a first refocusing excitation pulse, a first tip-up excitation pulse that is selective spatially and/or spectrally, a second tip-down excitation pulse that is 180° out of phase with respect to the first tip-down excitation pulse, a second refocusing excitation pulse, and a second tip-up excitation pulse that is selective spatially and/or spectrally. Alternatively, the first tip-down excitation pulse is selective spatially and/or spectrally instead of the first tip-up excitation pulse, and the second tip-down excitation pulse is selective spatially and/or spectrally instead of the second tip-up excitation pulse.
Public/Granted literature
- US20180292489A1 MRI RF Pulse Sequence for Multidimensional Outer Volume Suppression Public/Granted day:2018-10-11
Information query