Magnetic resonance imaging apparatus
First Claim
1. A magnetic resonance imaging apparatus comprising:
- a data collection unit that repetitively performs a tag mode of applying an RF wave to at least an upstream portion of an imaging area to label a fluid flown into the imaging area and, after a lapse of an inversion time from application of the RF wave, performing magnetic resonance data collection, while changing the inversion time;
an image reconstruction unit that reconstructs a plurality of tag images corresponding to a plurality of different inversion times based on magnetic resonance data collected in the tag mode;
a reference image generation unit that generates a reference image based on the plurality of the tag images; and
a fluid image generation unit that generates a subtraction image between each of the tag images and the reference image as a fluid image.
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Accused Products
Abstract
Provided is an MRI apparatus. In the MRI apparatus, a data collection unit repetitively performs a tag mode of applying an RF wave to at least an upstream portion of an imaging area to perform fluid labeling of a fluid flown into the imaging area and, after a lapse of an inversion time from application of the RF wave, performing magnetic resonance data collection, while changing the inversion time. An image reconstruction unit reconstructs a plurality of tag images corresponding to a plurality of different inversion times based on the magnetic resonance data collected in the tag mode. A reference image generation unit generates a reference image based on the plurality of the tag images. A fluid image generation unit generates a subtraction image between each of the tag images and the reference image as a fluid image.
14 Citations
21 Claims
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1. A magnetic resonance imaging apparatus comprising:
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a data collection unit that repetitively performs a tag mode of applying an RF wave to at least an upstream portion of an imaging area to label a fluid flown into the imaging area and, after a lapse of an inversion time from application of the RF wave, performing magnetic resonance data collection, while changing the inversion time; an image reconstruction unit that reconstructs a plurality of tag images corresponding to a plurality of different inversion times based on magnetic resonance data collected in the tag mode; a reference image generation unit that generates a reference image based on the plurality of the tag images; and a fluid image generation unit that generates a subtraction image between each of the tag images and the reference image as a fluid image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A magnetic resonance imaging apparatus comprising:
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a data collection unit that repetitively performs a control mode of applying an RF wave to an imaging area without labeling a fluid through application of an RF wave to an upstream portion of the imaging area and, after a lapse of an inversion time from application of the RF wave, performing magnetic resonance data collection, while changing the inversion time; an image reconstruction unit that reconstructs a plurality of control images corresponding to a plurality of different inversion times based on the magnetic resonance data collected in the control mode; a reference image generation unit that generates a reference image based on the plurality of the control images; and a fluid image generation unit that generates subtraction images between each of the control images and the reference image as fluid images. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A magnetic resonance imaging apparatus comprising:
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a data collection unit that repetitively performs an imaging mode of applying an RF wave to a subject to label a fluid flown into the subject and, after a lapse of an inversion time from application of the RF wave, performing magnetic resonance data collection while changing the inversion time; an image reconstruction unit that reconstructs a plurality of images corresponding to a plurality of different inversion times based on the magnetic resonance data; a reference image generation unit that generates a reference image based on the plurality of the images; and a fluid image generation unit that generates a subtraction image between each of the images and the reference image as a fluid image.
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21. A magnetic resonance imaging apparatus comprising:
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a data collection unit that repetitively performs an imaging mode of applying an RF wave to a subject to label a fluid flown into the subject and, after a lapse of an inversion time from application of the RF wave, performing magnetic resonance data collection of an imaging area while changing the inversion time; an image reconstruction unit that reconstructs a plurality of images corresponding to a plurality of different inversion times based on the magnetic resonance data; a fluid image generation unit that generates a fluid image by generating a subtraction image between at least one of the plurality of the images and a reference image, the reference image being an image obtained before the labeled fluid is flown into the imaging area or an image obtained after magnetization of a fluid in the imaging area is relaxed.
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Specification