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Magnetic resonance imaging apparatus and image processing apparatus

A technology of magnetic resonance imaging and image generation, which is applied in the directions of magnetic resonance measurement, measuring devices, and measuring magnetic variables, etc., and can solve problems such as time-consuming and poor quality of MR images

Active Publication Date: 2015-05-27
TOSHIBA MEDICAL SYST CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] In the MRI apparatus, it is known to obtain the k-space data required for reconstruction by performing one-dimensional imaging repeatedly, but this imaging generally takes time.
In addition, it is also known that when the state of the specimen changes with time, the quality of the reconstructed MR image deteriorates.

Method used

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  • Magnetic resonance imaging apparatus and image processing apparatus
  • Magnetic resonance imaging apparatus and image processing apparatus
  • Magnetic resonance imaging apparatus and image processing apparatus

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no. 1 Embodiment approach

[0033] figure 1 It is a block diagram showing the MRI apparatus 100 according to the first embodiment. Such as figure 1 As shown, the MRI apparatus 100 includes a static field magnet 101, a gradient magnetic field coil 102, a gradient magnetic field power supply 103, a bed 104, a bed control unit 105, a transmitting coil 106, a transmitting unit 107, a receiving coil array 108, a receiving unit 109, and a sequence control unit. 110. Computer system 120 (also referred to as "image processing device"). However, the subject P (for example, a human body) is not included in the MRI apparatus 100 .

[0034] The static field magnet 101 is a hollow cylindrical magnet, and generates a uniform static magnetic field in the internal space. The static field magnet 101 is, for example, a permanent magnet, a superconducting magnet, or the like. The gradient coil 102 is a hollow cylindrical coil, and is arranged inside the static field magnet 101 . The gradient magnetic field coil 102 is...

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Abstract

A magnetic resonance imaging apparatus according to one embodiment includes an arranger, a sensitivity deriver, and an image generator. The arranger arranges time-series data at a part of sampling points out of sampling points of a k-space determined based on an imaging parameter. The sensitivity deriver derives a sensitivity distribution in a time-space, in which the time-series data transformed in a time direction is expressed with a coefficient value, based on the time-series data. The image generator generates an image of the time-series data using the time-series data and the sensitivity distribution.

Description

technical field [0001] Embodiments of the present invention relate to a magnetic resonance imaging apparatus and an image processing apparatus. Background technique [0002] A magnetic resonance imaging device (hereinafter referred to as an MRI (Magnetic Resonance Imaging) device) uses atoms such as hydrogen placed in a magnetic field to selectively absorb / release only electromagnetic waves of various frequencies, depending on the type of atoms and magnetic fields. A device that non-destructively visualizes the distribution of atoms in a specimen due to the property of electromagnetic waves of a certain frequency. The signals obtained by measuring and digitizing the electromagnetic waves released from the specimen with the coil are called k-space data. [0003] The k-space data is, for example, two-dimensional or three-dimensional data obtained by repeatedly performing one-dimensional imaging, and the atomic distribution image inside the specimen is obtained by performing F...

Claims

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Application Information

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IPC IPC(8): A61B5/055G01R33/32
CPCG01R33/561G01R33/5611G01R33/56509G01R33/385G01R33/4818
Inventor 竹岛秀则
Owner TOSHIBA MEDICAL SYST CORP
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