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Parallel magnetic resonance imaging using undersampled coil data for coil sensitivity estimation

A technology of magnetic resonance imaging and coil sensitivity map, which is applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, and magnetic variable measurement, which can solve the problems of undesired scanning efficiency and increasing the risk of motion artifacts.

Inactive Publication Date: 2013-03-06
KONINK PHILIPS ELECTRONICS NV
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AI Technical Summary

Problems solved by technology

More accurate coil sensitivity estimates can be obtained from high-resolution data; however, this requires additional scan time, which is undesirable for scan efficiency and may increase the risk of motion artifacts

Method used

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  • Parallel magnetic resonance imaging using undersampled coil data for coil sensitivity estimation
  • Parallel magnetic resonance imaging using undersampled coil data for coil sensitivity estimation
  • Parallel magnetic resonance imaging using undersampled coil data for coil sensitivity estimation

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Embodiment Construction

[0096] Like numbered elements in these figures are the same element or perform the same function. Elements that have been discussed before will not necessarily be discussed in later figures, where the function is the same.

[0097] figure 1 The shown block diagram illustrates an embodiment of the method according to the invention. This method can be implemented as a computer-implemented method, a computer program product, and also as instructions stored on a computer-readable storage medium. In step 100, a set of coil array data of an imaging volume is acquired using a coil array. In step 102, body coil data is acquired using a body coil. Step 100 or 102 may be performed first. During steps 100 and 102, the body coil data and / or coil array data are sub-sampled. In step 104, the set of coil sensitivity maps is reconstructed using the set of coil array data and the body coil data. In step 106, magnetic resonance imaging data of the imaging volume is acquired. In step 108,...

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Abstract

A computer program product (1344, 1346, 1348) comprising machine executable instructions for performing a method of acquiring a magnetic resonance image (1342), the method comprising the steps of: acquiring (100, 200, 300) a set of coil array data (1334) of an imaging volume (1304) using a coil array (1314), wherein the set of coil array data comprises coil element data acquired for each antenna element (1316) of the coil array; acquiring (102, 202, 302) body coil data (1336) of the imaging volume with a body coil (1318), wherein the body coil data and / or the array coil data is sub-sampled; reconstructing (104, 204, 206, 304, 306, 308) a set of coil sensitivity maps (1338) using the set of coil array data and the body coil data, wherein there is a coil sensitivity map for each antenna element of the coil array; acquiring (106, 208, 310) magnetic resonance imaging data (1340) of the imaging volume using a parallel imaging method (1332); and reconstructing (108, 210, 312) the magnetic resonance image using the magnetic resonance imaging data and the set of coil sensitivity maps.

Description

technical field [0001] The present invention relates to magnetic resonance imaging, and more particularly to the acquisition of magnetic resonance images using parallel imaging methods. Background technique [0002] In magnetic resonance imaging there is a series of image reconstruction techniques or methods for reconstructing magnetic resonance images, which are referred to as parallel imaging techniques. An example of this is the sensitivity coding or SENSE reconstruction technique. In SENSE, conventional Fourier encoding is simplified by exploiting spatial information about the individual antenna elements of a multi-element coil array. This simplification of the Fourier encoding allows for faster acquisition of the magnetic resonance imaging data required for magnetic resonance images. [0003] In order to perform high-quality SENSE reconstructions, accurate knowledge of the receiver coil sensitivity is required. Coil sensitivity was estimated from low-resolution refer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/561
CPCG01R33/246G01R33/5611G01R33/5608G01R33/56
Inventor F·黄M·多内瓦P·博尔纳特J·塞内加
Owner KONINK PHILIPS ELECTRONICS NV
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