METHOD AND SYSTEM FOR MOTION CORRECTION IN IMAGING SYSTEMS
First Claim
1. A system for performing motion correction of image data, the system comprising:
- a processor; and
a computer-readable medium operably coupled to the processor, the computer-readable medium comprising instructions that, upon execution by the processor, perform operations comprisingreceiving a first set of data of k-space data of an object to be imaged, the first set of data including a first plurality of phase encoded lines that encompass the object to be imaged;
receiving a second set of data of the k-space data of the object to be imaged, the second set of data including a second plurality of phase encoded lines that encompass the object to be imaged, wherein the first set of data correlates with the second set of data;
calculating a cross-correlation by multiplying the received first set of data and the received second set of data in k-space;
calculating a value of the motion of the object to be imaged that occurred between acquisition of the first set of data and acquisition of the second set of data using the calculated cross-correlation; and
correcting the second set of data to remove the motion using the calculated value.
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Abstract
A method, a system, and a computer-readable medium are provided which perform motion correction of image data. A first set of data and a second set of data of k-space data of an object to be imaged are received. The first set of data and the second set of data include a plurality of phase encoded lines that encompass the object to be imaged. The first set of data correlates with the second set of data. A cross-correlation is calculated by multiplying the first set of data and the second set of data in k-space. A value of the motion of the object to be imaged that occurred between acquisition of the first set of data and acquisition of the second set of data is calculated using the cross-correlation. The second set of data is corrected using the calculated value to remove the motion. The correction process is repeated until the k-space data is completely processed.
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Citations
20 Claims
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1. A system for performing motion correction of image data, the system comprising:
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a processor; and a computer-readable medium operably coupled to the processor, the computer-readable medium comprising instructions that, upon execution by the processor, perform operations comprising receiving a first set of data of k-space data of an object to be imaged, the first set of data including a first plurality of phase encoded lines that encompass the object to be imaged; receiving a second set of data of the k-space data of the object to be imaged, the second set of data including a second plurality of phase encoded lines that encompass the object to be imaged, wherein the first set of data correlates with the second set of data; calculating a cross-correlation by multiplying the received first set of data and the received second set of data in k-space; calculating a value of the motion of the object to be imaged that occurred between acquisition of the first set of data and acquisition of the second set of data using the calculated cross-correlation; and correcting the second set of data to remove the motion using the calculated value. - View Dependent Claims (2, 3)
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4. A computer-readable medium comprising computer-readable instructions therein that, upon execution by a processor, cause the processor to perform motion correction of image data, the instructions configured to cause a computing device to:
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receive a first set of data of k-space data of an object to be imaged, the first set of data including a first plurality of phase encoded lines that encompass the object to be imaged; receive a second set of data of the k-space data of the object to be imaged, the second set of data including a second plurality of phase encoded lines that encompass the object to be imaged, wherein the first set of data correlates with the second set of data; calculating a cross-correlation by multiplying the received first set of data and the received second set of data in k-space; calculate a value of the motion of the object to be imaged that occurred between acquisition of the first set of data and acquisition of the second set of data using the calculated cross-correlation; and correct the second set of data to remove the motion using the calculated value.
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5. A method of performing motion correction of image data, the method comprising:
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(a) receiving a first set of data of k-space data of an object to be imaged, the first set of data including a first plurality of phase encoded lines that encompass the object to be imaged; (b) receiving a second set of data of the k-space data of the object to be imaged, the second set of data including a second plurality of phase encoded lines that encompass the object to be imaged, wherein the first set of data correlates with the second set of data; (c) calculating a cross-correlation by multiplying the received first set of data and the received second set of data in k-space; (d) calculating a value of the motion of the object to be imaged that occurred between acquisition of the first set of data and acquisition of the second set of data using the calculated cross-correlation; and (e) correcting the second set of data to remove the motion using the calculated value. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification