PARALLEL MAGNETIC RESONANCE IMAGING USING UNDERSAMPLED COIL DATA FOR COIL SENSITIVITY ESTIMATION
First Claim
1. A computer program product comprising machine executable instructions for performing a method of acquiring a magnetic resonance image, the method comprising the steps of:
- acquiring a set of coil array data of an imaging volume using a coil array, wherein the set of coil array data comprises coil element data acquired for each antenna element of the coil array;
acquiring body coil data of the imaging volume with a body coil, wherein the body coil data and/or the array coil data are sub-sampled;
wherein the coil element data and the body coil data are both undersampled in k-space and are undersampled to a different degree, andreconstructing a set of coil sensitivity maps 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 magnetic resonance imaging data of the imaging volume using a parallel imaging method; and
reconstructing the magnetic resonance image using the magnetic resonance imaging data and the set of coil sensitivity maps.
1 Assignment
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Accused Products
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.
46 Citations
15 Claims
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1. A computer program product comprising machine executable instructions for performing a method of acquiring a magnetic resonance image, the method comprising the steps of:
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acquiring a set of coil array data of an imaging volume using a coil array, wherein the set of coil array data comprises coil element data acquired for each antenna element of the coil array; acquiring body coil data of the imaging volume with a body coil, wherein the body coil data and/or the array coil data are sub-sampled; wherein the coil element data and the body coil data are both undersampled in k-space and are undersampled to a different degree, and reconstructing a set of coil sensitivity maps 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 magnetic resonance imaging data of the imaging volume using a parallel imaging method; and reconstructing the magnetic resonance image using the magnetic resonance imaging data and the set of coil sensitivity maps. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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4. (canceled)
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14. A computer-implemented method of acquiring a magnetic resonance image, the method comprising the steps of:
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acquiring set of coil array data an imaging volume using a coil array, wherein the set of coil array data comprises coil element data acquired for each antenna element of the coil array; acquiring body coil data of the imaging volume with a body coil, wherein the body coil data and/or the array coil data are sub-sampled, wherein the coil element data and the body coil data are both undersampled in k-space and are undersampled to a different degree, and reconstructing a set of coil sensitivity maps 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 magnetic resonance imaging data of the imaging volume using a parallel imaging method; and reconstructing the magnetic resonance image using the magnetic resonance imaging data and the set of coil sensitivity maps.
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15. A magnetic resonance imaging system comprising:
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a magnetic resonance imaging magnet generating a main magnetic field for orientating the magnetic spins of nuclei of a subject located within an imaging volume; a magnetic field gradient coil for generating a gradient magnetic field for spatial encoding of the magnetic resonance signal of spins of nuclei within the imaging volume; a gradient coil power supply for supplying current to the magnetic field gradient coil; a radio frequency system for acquiring magnetic resonance imaging data, wherein the radio frequency system is adapted to connect to a body coil and a coil array; a computer system comprising a processor, wherein the computer system is adapted for constructing images from the magnetic resonance imaging data and for controlling the operation of the magnetic resonance imaging system; and a computer-readable storage medium containing instructions for execution by the processor, wherein when executed cause the processor to perform the steps of; acquiring a set of coil array data of the imaging volume using the coil array, wherein the set of coil array data comprises coil element data acquired for each antenna element of the coil array; acquiring body coil data of the imaging volume with the body coil, wherein the body coil data and/or the array coil data are sub-sampled;
wherein the coil element data and the the body coil data are both undersampled in k-space and are undersampled to a different degree, andreconstructing a set of coil sensitivity maps using the set of coil element data and the coil array data, wherein there is a coil sensitivity map for each antenna element of the coil array; acquiring magnetic resonance imaging data of the imaging volume using a parallel imaging method; and reconstructing the magnetic resonance image using the magnetic resonance imaging data and the set of coil sensitivity maps.
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Specification