Accelerated pseudo-random data magnetic resonance imaging system and method
First Claim
1. A magnetic resonance imaging method comprising:
- performing a magnetic resonance dynamic imaging sequence comprising;
(i) a first acquisition configured to acquire a first set of magnetic resonance data at a first time, the first set of magnetic resonance data having a first pseudo-random data undersampling pattern defined within an area of a data space; and
(ii) one or more additional acquisitions configured to acquire one or more additional sets of magnetic resonance data at respective times, each acquisition having second pseudo-random data undersampling patterns defined within the area of the data space;
wherein the first and the one or more additional pseudo-random data undersampling patterns interleave to yield a desired sampling pattern and the magnetic resonance data is representative of a feature within a subject of interest.
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Abstract
The present disclosure is intended to describe embodiments for improving image data acquisition and processing in accelerated dynamic magnetic resonance imaging sequences. One embodiment is described where a method includes an acquisition sequence configured to acquire an undersampled set of magnetic resonance data. The undersampled set of magnetic resonance data has a pseudo-random sampling pattern within a data space acquired at a first time, the pseudo-random sampling pattern being influenced by other pseudo-random sampling patterns within the data space arising from the acquisition of additional undersampled sets of magnetic resonance data at respective times. In some embodiments, the pseudo-random sampling patterns of the undersampled sets of magnetic resonance data interleave to yield a desired sampling pattern.
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Citations
23 Claims
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1. A magnetic resonance imaging method comprising:
performing a magnetic resonance dynamic imaging sequence comprising; (i) a first acquisition configured to acquire a first set of magnetic resonance data at a first time, the first set of magnetic resonance data having a first pseudo-random data undersampling pattern defined within an area of a data space; and (ii) one or more additional acquisitions configured to acquire one or more additional sets of magnetic resonance data at respective times, each acquisition having second pseudo-random data undersampling patterns defined within the area of the data space; wherein the first and the one or more additional pseudo-random data undersampling patterns interleave to yield a desired sampling pattern and the magnetic resonance data is representative of a feature within a subject of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A magnetic resonance imaging method comprising:
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performing a magnetic resonance dynamic imaging sequence comprising; an acquisition sequence configured to acquire an undersampled set of magnetic resonance data having a pseudo-random sampling pattern within a data space at a first time, the pseudo-random sampling pattern being influenced by other pseudo-random sampling patterns within the data space arising from the acquisition of additional undersampled sets of magnetic resonance data at respective times, the first time and the respective times defining a time window; generating a series of images from the undersampled magnetic resonance data sets; generating a reconstructed image using the series of images and a multiplicative constrained reconstruction process. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A magnetic resonance imaging method comprising:
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performing a magnetic resonance dynamic imaging sequence comprising; (a) a first acquisition sequence comprising; (i) defining at least a portion of a data space with a uniform pattern of locations that are to be sampled and locations that are not to be sampled; and (ii) sampling the uniform pattern within the data space in a first pseudo-random subsampling pattern to collect a first set of magnetic resonance data; and (b) one or more additional acquisition sequences comprising; (i) sampling the uniform pattern within the data space with one or more additional pseudo-random subsampling patterns to collect one or more additional sets of magnetic resonance data; wherein the first and the one or more additional pseudo-random subsampling patterns interleave to yield a desired sampling pattern. - View Dependent Claims (21, 22, 23)
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Specification