Mute multi-gradient echo dynamic magnetic resonance imaging system and method

An imaging method, gradient echo technology, applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, magnetic variable measurement, etc., can solve the problem of increasing scanning time and so on

Pending Publication Date: 2022-04-12
GE PRECISION HEALTHCARE LLC +1
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  • Abstract
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  • Claims
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Problems solved by technology

This additional requirement increases scan time and introduces errors due to registration of functional images with anatomical images

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  • Mute multi-gradient echo dynamic magnetic resonance imaging system and method
  • Mute multi-gradient echo dynamic magnetic resonance imaging system and method
  • Mute multi-gradient echo dynamic magnetic resonance imaging system and method

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Embodiment Construction

[0034] The present disclosure includes systems and methods for silent dynamic magnetic resonance (MR) imaging of a subject. In dynamic imaging, images of a subject are acquired to study the dynamic changes of the subject over time. A subject, as used herein, is a subject placed within a bore of an MR imaging (MRI) system and imaged by the MRI system. The subject can be a human, animal or phantom. In addition to muting, the systems and methods described herein allow for the acquisition of multiple gradient echo data sets, allowing image contrast to be adjusted. Furthermore, anatomical and functional MR images are generated from the same functional MR dataset without the need for separate acquisition of anatomical images. Methodological aspects will be in part apparent and in part discussed explicitly in the following description.

[0035] In magnetic resonance imaging (MRI), a subject is placed in a magnet. When a subject is in a magnetic field generated by a magnet, the ma...

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Abstract

The invention relates to a system and method for muted multi-gradient echo dynamic magnetic resonance imaging. The invention provides a magnetic resonance (MR) dynamic imaging method. The method includes acquiring a functional MR dataset comprising frames of a k-space dataset while applying a functional stimulus to the subject. Acquisition of the functional MR dataset includes acquiring frames of the k-space dataset by setting an orientation to an initial angle, and acquiring a free induction decay (FID) dataset. Acquisition of the FID dataset includes applying a sequence of gradients, each gradient of the sequence corresponding to a k-space spoke, where the sequence of k-space spokes defines a k-space segment having the orientation in the 3D k-space volume. Acquisition of frames of the k-space dataset further includes acquiring a gradient echo dataset corresponding to the FID dataset, and updating the orientation to a golden angle. The method further includes generating an anatomical MR image and a functional image based on the functional MR dataset.

Description

Background technique [0001] The field of the present disclosure relates generally to systems and methods of dynamic magnetic resonance (MR) imaging, and more particularly to systems and methods of silent multiple gradient echo dynamic MR imaging. [0002] Dynamic MR imaging has been used to study the temporal response of subjects. For example, functional MRI (fMRI) has been used to diagnose the neurological function of the brain. Typical fMRI data acquisitions are loud due to the rapid switching of magnetic field gradients, thus hindering the application of fMRI to patients sensitive to loud acoustic noise. Furthermore, in order to increase the sampling rate in the time direction, the functional image has a low image resolution. Therefore, individual anatomical scans with higher image resolution are required to identify the location of functional activity in the brain. This additional requirement increases scan time and introduces errors due to registration of functional im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/54A61B5/055A61B5/00
CPCG01R33/4806G01R33/4826G01R33/5608G01R33/5616G01R33/4818
Inventor 弗洛里安·维辛格A·B·S·桑切斯B·费尔南德斯P·拉森A·莱恩斯
Owner GE PRECISION HEALTHCARE LLC
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