Magnetic resonance imaging apparatus and method

A magnetic resonance imaging and image technology, which is applied in measuring devices, image enhancement, image analysis, etc., can solve the problems of not elucidating cerebrospinal fluid, not establishing magnetic resonance imaging, etc.

Active Publication Date: 2013-10-23
TOSHIBA MEDICAL SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Conventionally, magnetic resonance imaging has been known to dynamically observe cerebrospinal fluid (hereinafter, appropriately referred to as "CSF (cerebrospinal fluid: cerebrospinal fluid)") by synchronizing electrocardiograms. In the case of spinal fluid, optimal MRI was not established

Method used

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  • Magnetic resonance imaging apparatus and method
  • Magnetic resonance imaging apparatus and method
  • Magnetic resonance imaging apparatus and method

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no. 1 Embodiment approach ）

[0034] Embodiments of a magnetic resonance imaging apparatus (hereinafter, appropriately referred to as “MRI apparatus”) and methods will be described below. figure 1 It is a block diagram showing the configuration of the MRI apparatus 100 according to the first embodiment. In addition, the subject P is not included in the MRI apparatus 100 .

[0035] The static field magnet 1 is formed in a hollow cylindrical shape, and generates a uniform static magnetic field in the inner space. The static field magnet 1 is, for example, a permanent magnet, a superconducting magnet, or the like. The gradient magnetic field coil (coil) 2 is formed in a hollow cylindrical shape, and generates a gradient magnetic field in the inner space. Specifically, the gradient coil 2 is disposed inside the static field magnet 1 , receives a current supply from the gradient power supply 3 , and generates a gradient magnetic field. The gradient magnetic field power supply 3 supplies current to the gradie...

no. 2 Embodiment approach ）

[0078] Next, a second embodiment will be described. In the second embodiment, an example in which k-space data is simply divided into two segments in the phase encoding direction has been described, but the embodiment is not limited to this. In addition, the MRI apparatus 100 according to the second embodiment may have the same configuration as that of the MRI apparatus 100 according to the first embodiment, except for the cases particularly mentioned.

[0079] Figure 11 It is a diagram for explaining the relationship between data collection and segments in the second embodiment. Such as Figure 11 As shown, for example, the data collection unit 26a collects the data of the low-frequency region of k-space covering multiple time phases within one respiratory cycle, and also collects the data of the high-frequency region of k-space covering multiple time phases within one respiratory cycle data. At this time, the CSF image generation unit 26b combines the data of the low-fr...

no. 3 Embodiment approach ）

[0095] Next, a third embodiment will be described. In the above embodiments, it has been described that the start of inhalation or the start of exhalation is used as a trigger, and an inversion pulse is applied to selectively collect a desired period in the respiratory cycle (for example, a period with large respiratory fluctuations, Exhalation period, inhalation period) data example. However, embodiment is not limited to this. In addition, the MRI apparatus 100 according to the third embodiment may have the same configuration as the MRI apparatus 100 according to the other embodiments, except for the cases particularly mentioned.

[0096] In the third embodiment, the data collection unit 26 a continuously collects data of the imaging region independently of the respiratory cycle of the subject P. In addition, the data collection unit 26a simultaneously collects data showing the phase of the respiratory cycle. Then, the CSF image generation unit 26b selectively generates CS...

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Abstract

A magnetic resonance imaging apparatus according to an embodiment includes a collection unit and a generation unit. The collection unit collects data of an imaging area over a plurality of time phases within a certain respiratory cycle after applying a labeling pulse to a labeling area in which cerebrospinal fluid flows under a task of respiration. The generation unit generates images of a plurality of time phases depicting the cerebrospinal fluid by using the collected data.

Description

[0001] This application claims the priority of Japanese Patent Application No. 2012-085807 filed on April 4, 2012 and Japanese Patent Application No. 2013-044619 filed on March 6, 2013, and all of the aforementioned Japanese Patent Applications are cited in this application content. technical field [0002] The present invention relates to a magnetic resonance imaging (imaging) apparatus and method. Background technique [0003] Conventionally, magnetic resonance imaging has been known to dynamically observe cerebrospinal fluid (hereinafter, appropriately referred to as "CSF (cerebrospinal fluid: cerebrospinal fluid)") by synchronizing electrocardiograms. In the case of spinal fluid, no optimal MRI has been established. Contents of the invention [0004] The problem to be solved by the present invention is to provide a magnetic resonance imaging apparatus and method capable of appropriately visualizing the dynamics of cerebrospinal fluid. [0005] A magnetic resonance im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
CPCG01R33/56333A61B2576/026G01R33/5673A61B5/0042A61B5/055A61B5/7285G01R33/5614A61B5/00G16H30/40G06T7/11G01R33/307G01R33/385G01R33/4818G06T7/0012G06T11/60G06T2207/10088G06T2207/30016
Inventor 宫崎美津惠山下裕市
Owner TOSHIBA MEDICAL SYST CORP
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