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Magnetic resonance imaging system and method

A magnetic resonance imaging and imaging technology, applied in the measurement of magnetic variables, medical science, diagnosis, etc., can solve the problems of B1 penetration reduction, basic SNR reduction, etc.

Active Publication Date: 2017-01-11
GENERAL ELECTRIC CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such prior art techniques can lead to reduced B1 penetration in the region of interest, which directly reduces the base SNR of the array

Method used

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  • Magnetic resonance imaging system and method
  • Magnetic resonance imaging system and method
  • Magnetic resonance imaging system and method

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Embodiment Construction

[0054] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Where possible, the same reference characters used throughout the drawings refer to the same or similar components without repeated description. Although exemplary embodiments of the present invention are described with respect to MRI body (transmit) coil and MRI surface (receive) coil arrays, embodiments of the present invention are generally also applicable for use with parallel coil RF transceivers.

[0055] As used herein, the terms "substantially", "substantially" and "approximately" indicate conditions within reasonably achievable manufacturing and assembly tolerances relative to ideally desired conditions suitable for achieving the functional purpose of a component or assembly. As used herein, "electrically coupled," "electrically connected," and "electrically communicating" means that the referenced elements are directly...

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Abstract

A method of parallel imaging for use with a magnetic resonance imaging device (10) includes generating a longitudinal magnetic field B0 throughout a target volume (55), generating a transverse magnetic field B1 substantially perpendicular to B0 throughout the target volume (55) ), transmitting a plurality of RF pulses to the target volume (55), with a surface coil (57), acquiring first MR imaging data from a target within the target volume (55) in response to the transmission of the RF pulses, and acquiring second MR imaging data from the target within the target volume (55) with a body coil (56) responsive to the transmission of the RF pulses, wherein acquisition of the first MR imaging data and the second MR imaging data being substantially simultaneously.

Description

technical field [0001] Embodiments of the present invention relate generally to magnetic resonance imaging, and more particularly, to systems and methods for improving the parallel imaging performance of magnetic resonance imaging devices. Background technique [0002] In general, magnetic resonance images are obtained by applying a large uniform magnetic field ("B0") from a "field" or "polarization" coil to a target object, such as a patient's body. This large uniform field roughly aligns the quantum spins of the photons in the molecules within the object of interest, but the spins of the photons within the chemically distinct molecules will continue to precess at distinct Larmor frequencies. This is possible by simply applying a pulsed RF field ("B1") from a "send coil" substantially across B0, exciting photons of molecules with spins precessing at a Larmor frequency matching the pulsed RF . As the excited photons relax back to their lower energy normal, they emit RF ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/341A61B5/055
CPCA61B5/055G01R33/341G01R33/34076G01R33/3415G01R33/365G01R33/5611G01R33/4831G01R33/5612
Inventor 褚大申R.S.斯托尔蒙S.A.林赛J.H.阿考李竹郑海柳晓旭
Owner GENERAL ELECTRIC CO