Magnetic resonance imaging apparatus

A magnetic resonance imaging apparatus comprising:

• a memory;
• and
• a processor comprising processing circuitry, wherein the memory stores instructions, which when executed by the processor, cause the magnetic resonance imaging apparatus to perform operations comprising:
• a data collection unit that repetitively performs repetitively performing 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 generating a reference image based on the plurality of thecontrol images;
• and
• a fluid image generation unit that generates generating subtraction images between each of the control images and the reference image as fluid images.

A magnetic resonance imaging apparatus comprising:

• a memory;
• and
• a processor comprising processing circuitry, wherein the memory stores instructions, which when executed by the processor, cause the magnetic resonance imaging apparatus to perform operations comprising:
• a data collection unit that repetitively performs repetitively performing 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 reconstructing 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 generating a reference image based on the plurality of the images;
• and
• a fluid image generation unit that generates generating a subtraction image between each of the images and the reference image as a fluid image.

A magnetic resonance imaging apparatus comprising:

• a memory;
• and
• a processor comprising processing circuitry, wherein the memory stores instructions, which when executed by the processor, cause the magnetic resonance imaging apparatus to perform operations comprising:
• a data collection unit that repetitively performs repetitively performing 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 reconstructing a plurality of images corresponding to a plurality of different inversion times based on the magnetic resonance data;
• and
• a fluid image generation unit that generates generating 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.

A magnetic resonance imaging apparatus comprising:

• a memory;
• and
• a processor comprising processing circuitry, wherein the memory stores instructions, which when executed by the processor, cause the magnetic resonance imaging apparatus to perform operations comprising:
• repetitively performing a tag mode to collect magnetic resonance data while changing an inversion time, and perform a control mode to collect magnetic resonance data a given number of times that is smaller than the number of performances of the tag mode;
• reconstructing a plurality of tag images corresponding to a plurality of different inversion times based on the magnetic resonance data collected in the tag mode, and reconstructing one or more control images as many as a number smaller than that of the tag images based on the magnetic resonance data collected in the control mode;
• and
• generating a subtraction image for each inversion time using the tag images and the one or more control images.

A magnetic resonance imaging apparatus comprising:

• a memory;
• and
• a processor comprising processing circuitry, wherein the memory stores instructions, which when executed by the processor, cause the magnetic resonance imaging apparatus to perform operations comprising:
• performing a tag mode, and performing a control mode a given number of times that is smaller than the number of performances of the tag mode, the tag mode applying a first 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 first RF wave, performing collection of magnetic resonance data, while changing the inversion time, the control mode performing collection of magnetic resonance data without labeling a fluid through application of an RF wave to the upstream portion of the imaging area;
• reconstructing a plurality of tag images corresponding to a plurality of different inversion times based on the magnetic resonance data collected in the tag mode, and reconstructing one or more control images as many as a number smaller than that of the tag images based on the magnetic resonance data collected in the control mode;
• and
• generating a subtraction image for each inversion time using the tag images and the one or more control images.

A magnetic resonance imaging method comprising:

• repetitively performing a tag mode to collect magnetic resonance data while changing an inversion time;
• performing a control mode to collect magnetic resonance data a given number of times that is smaller than the number of performances of the tag mode;
• reconstructing a plurality of tag images corresponding to a plurality of different inversion times based on the magnetic resonance data collected in the tag mode;
• reconstructing one or more control images as many as a number smaller than that of the tag images based on the magnetic resonance data collected in the control mode;
• and
• generating a subtraction image for each inversion time using the tag images and the one or more control images.

A magnetic resonance imaging method comprising:

• repetitively performing a tag mode, the tag mode 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 collection of magnetic resonance data, while changing the inversion time;
• performing a control mode a given number of times that is smaller than the number of performances of the tag mode, the control mode performing collection of magnetic resonance data without labeling a fluid through application of an RF wave to the upstream portion of the imaging area;
• reconstructing a plurality of tag images corresponding to a plurality of different inversion times based on the magnetic resonance data collected in the tag mode;
• reconstructing one or more control images as many as a number smaller than that of the tag images based on the magnetic resonance data collected in the control mode;
• and
• generating a subtraction image for each inversion time using the tag images and the one or more control images.