Magnetic resonance (MR) imaging generating perfusion images with arterial spin labeling (ASL) and 3D radial pulse sequences
First Claim
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1. A method of generating a plurality of perfusion images, of a region of interest that are generated from k-space datasets in a magnetic resonance imaging (MRI) system, said method comprising:
- activating a radio frequency (RF) coil of the MRI system in order to apply a labeling phase of an arterial spin labeling (ASL) pulse sequence to a region of interest;
generating a tag image of the region of interest with one or more processors of the MRI system, by applying a three-dimensional (3D) radial pulse sequence from the activated RF coil of the MRI system onto the region of interest;
activating the RF coil of the MRI system in order to apply a control phase of the ASL pulse sequence onto the region of interest, wherein the applied control phase modifies a frequency, a phase, or an amplitude of the ASL pulse sequence;
generating a control image of the region of interest with the one or more processor of the MRI system, by applying the 3D radial pulse sequence from the activated RF coil onto the region of interest;
using the one or more processors of the MRI system in order to subtract the generated control image from the generated tag image and in order to generate k-space datasets; and
using the one or more processors of the MRI system and the generated k-space data sets in order to generate a plurality of perfusion images of the region of interest.
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Abstract
Systems and methods for reducing acoustic noise in a Magnetic Resonance Imaging (MRI) are provided. One method includes applying a labeling phase of an arterial spin labeling (ASL) pulse sequence to a region of interest, applying a three-dimensional (3D) radial pulse sequence to the region of interest to generate a tag image, applying a control phase of the ASL pulse sequence to the region of interest, and applying the 3D radial pulse sequence to the region of interest to generate a control image.
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Citations
20 Claims
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1. A method of generating a plurality of perfusion images, of a region of interest that are generated from k-space datasets in a magnetic resonance imaging (MRI) system, said method comprising:
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activating a radio frequency (RF) coil of the MRI system in order to apply a labeling phase of an arterial spin labeling (ASL) pulse sequence to a region of interest; generating a tag image of the region of interest with one or more processors of the MRI system, by applying a three-dimensional (3D) radial pulse sequence from the activated RF coil of the MRI system onto the region of interest; activating the RF coil of the MRI system in order to apply a control phase of the ASL pulse sequence onto the region of interest, wherein the applied control phase modifies a frequency, a phase, or an amplitude of the ASL pulse sequence; generating a control image of the region of interest with the one or more processor of the MRI system, by applying the 3D radial pulse sequence from the activated RF coil onto the region of interest; using the one or more processors of the MRI system in order to subtract the generated control image from the generated tag image and in order to generate k-space datasets; and using the one or more processors of the MRI system and the generated k-space data sets in order to generate a plurality of perfusion images of the region of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A non-transitory computer readable storage medium that is usable with a magnetic resonance imaging (MRI) system having one or more processors that generates k-space datasets and a plurality of perfusion images of a region of interest using the generated k-space datasets the non-transitory computer readable storage medium including instructions to command the one or more processors to:
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activate a radio frequency (RF) coil in order to apply a labeling phase of an arterial spin labeling (ASL) pulse sequence to a region of interest; generate a tag image of the region of interest with one or more processors of the MRI system, by applying a three-dimensional (3D) radial pulse sequence from the activated RF coil of the MRI system onto the region of interest; activate the RF coil of the MRI system in order to apply a control phase of the ASL pulse sequence onto the region of interest, wherein the applied control phase modifies a frequency, a phase, or an amplitude of the ASL pulse sequence; generate a control image of the region of interest with the one or more processors of the MRI system, by applying the 3D radial pulse sequence to the region of interest;
with the activated RF coil;subtract the generated control image from the generated tag image in order to generate k-space datasets by using the one or more computer processors of the MRI system; and generate a plurality of perfusion images of the region of interest from the generated k-space datasets with the one or more computer processors of the MRI system. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A Magnetic Resonance Imaging (MRI) system that generates a plurality of perfusion images, of a region of interest from k-space datasets that are generated from the application of an arterial spin labeling (ASL) pulse sequence and the application of a three-dimensional (3D) radial pulse sequence comprising:
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a magnet having a plurality magnetic gradient coils, wherein the magnet is a superconducting magnet, a permanent magnet, or an electromagnet; a radio frequency (RF) coil configured to provide transmission/reception of excitation pulse sequences; a display; and one or more processors configured to; activate the RF coil in order to apply a labeling phase of an arterial spin labeling (ASL) pulse sequence to a region of interest; generate a tag image of the region of interest by applying a three-dimensional (3D) radial pulse sequence with the activated RF coil onto the region of interest; activate the RF coil in order to apply a control phase of the ASL pulse sequence onto the region of interest, wherein the applied control phase modifies a frequency, a phase, or an amplitude of the ASL pulse sequence; and generate a control image of the region of interest by applying the 3D radial pulse sequence onto the region of interest with from the activated RF coil; and subtract the generated control image from the generated tag image and thereby generate k-space datasets which are then utilized in generating a plurality of perfusion images based on the generated k-space datasets that are shown on the display. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification