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Image capturing device and method

An image capture and image technology, applied in image enhancement, image analysis, measuring devices, etc., can solve problems such as increased noise and image quality deterioration

Active Publication Date: 2016-12-14
HITACHI HEALTHCARE MFG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As one of the methods, high-speed shooting called parallel imaging is used, but there are many problems such as deterioration of image quality and increase of noise when the high-speed rate is increased.

Method used

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Embodiment 1

[0037] Embodiment 1 is an example of an MRI apparatus that is an image capture device that captures images of a subject. The image capture device includes: an observation unit 100 that performs observation of a subject and outputs observation data; The image reconstruction unit 106 configures the observation unit 100 to obtain observation data based on the observation pattern for sparse observation, and the reconstruction unit 106 performs image correction processing on the observation data based on the observation pattern.

[0038] Such as Figure 4 As shown, the image processing unit 118 of this embodiment reconstructs an image from the observed K-space by repeatedly executing steps ST401 to ST407. As described above, in the image processing unit 118, cost minimization and sequential optimization using the split Bregman method are performed, and in this embodiment, the result corrected by the image correction process is used in the estimation update process. .

[0039] Suc...

Embodiment 2

[0075] Embodiment 2 is an example of an MRI apparatus that is an image capture device that captures images of a subject. The image capture device includes: an observation unit 100 that performs observation of the subject and outputs observation data in K-space; The reconstruction part 106 of the image reconstruction part of the observation data, the observation part 100 obtains the observation data of the K space based on the observation pattern of the sparse observation, and in the observation of the high frequency component of the K space, after observing When it is any one of the two points of point symmetry, the observation of the other point is not performed.

[0076] In this embodiment, the overall structure of the device is the same as that of Embodiment 1, by figure 1 to perform. The difference between the present embodiment and the first embodiment lies in the observation method of the observation data which is the echo signal of the observation unit 100 . The recon...

Embodiment 3

[0081] Embodiment 3 is an image pickup device, that is, an embodiment of an MRI apparatus configured in that the observation unit for observing images acquires observation data based on an observation pattern that performs sparse observation, and the reconstruction unit performs a plurality of image correction processes based on the observation pattern. .

[0082] Figure 10 The processing flow of the image processing unit 118 in the third embodiment is shown. exist Figure 10 in, for with Figure 4 Components that are the same as those shown are assigned the same symbols and their descriptions are omitted. In addition, the overall structure of the device is the same as that of Embodiment 1 and 2, such as figure 1 shown.

[0083] According to this embodiment, the image quality of the reconstructed image can be adjusted more simply, and the image quality adjustment work of the user can be greatly reduced. The difference between this embodiment and embodiment 1 is that, as...

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Abstract

An MRI device or the like applying compressive sensing, wherein a higher-quality image captured at high speed is acquired. The present invention has an observation unit (100) in which, when any one of two points symmetrical about an origin point is observed, the other point is not observed in high-frequency component observation of a K space of an MRI device, and a reconfiguration unit (106) for reconfiguring an image from a K-space component observed by the observation unit, image compensation processing based on an observation pattern in the observation unit being included in the process of reconfiguration in the reconfiguration unit.

Description

technical field [0001] The invention relates to a magnetic resonance imaging device and the like, in particular to high-speed, high-quality image capture technology. Background technique [0002] Magnetic Resonance Imaging (MRI: Magnetic Resonance Imaging) refers to the method of using the phenomenon of Nuclear Magnetic Resonance (NMR: Nuclear Magnetic Resonance) to make the information in the living body into an image. It is similar to CT (Computed Tomography) in terms of tomographic images. However, it is possible to visualize physical information that cannot be obtained by CT. In addition, you will not be exposed to radiation. However, there is a problem that the inspection time is long due to its characteristics. In general, it takes tens of minutes for one sample, and it is necessary to stop breathing for several tens of seconds during imaging / photography of the abdomen or lungs, etc., which puts a heavy burden on the patient, and therefore it is desired to speed up t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055A61B6/03A61B8/00
CPCA61B8/00A61B5/055A61B6/027A61B6/5205G01R33/482G01R33/4824G01R33/5608G01R33/561A61B6/032G06T5/70A61B5/7203A61B5/7253A61B8/14A61B2576/00G01R33/56G06T11/003G06T2207/10088
Inventor 野口喜实荻野昌宏
Owner HITACHI HEALTHCARE MFG LTD
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