MRI method of determining time-optimal gradient waveforms with gradient amplitude as a function of arc-length in k-space
First Claim
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1. A method for magnetic resonance imaging (MRI) comprising the steps of:
- a) specifying a scanning path;
b) determining gradient amplitude directly as a function of arc-length along the specified scanning path in k-space, rather than as a function of time;
c) calculating a time optimal gradient waveform for scanning the scanning path from the gradient amplitude; and
d) scanning along the scanning path using the time optimal gradient waveform.
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Abstract
A method for magnetic resonance imaging (MRI) is provided. A scanning path is specified. Gradient amplitude is determined as a function of arc-length along the scanning path in k-space. A time optimal gradient waveform for scanning the scanning path is calculated from the gradient amplitude. The scanning path is scanned using the time optimal gradient waveform.
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Citations
19 Claims
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1. A method for magnetic resonance imaging (MRI) comprising the steps of:
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a) specifying a scanning path; b) determining gradient amplitude directly as a function of arc-length along the specified scanning path in k-space, rather than as a function of time; c) calculating a time optimal gradient waveform for scanning the scanning path from the gradient amplitude; and d) scanning along the scanning path using the time optimal gradient waveform. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A magnetic resonance imaging apparatus, comprising:
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a magnetic resonance imaging excitation and detection system; and a controller electrically connected to the magnetic resonance imaging excitation and detection system, comprising; a display; at least one processor; and computer readable media, comprising; computer readable code configured for specifying a scanning path; computer readable code configured for directly determining gradient amplitude as a function of arc-length along the specified scanning path in k-space, rather than as a function of time; computer readable code configured for calculating a time optimal gradient waveform that scans the specified scanning path based on the directly determined gradient amplitude as a function of arc-length along the specified scanning path in k-space, rather than as a function of time; and computer readable code configured for scanning along the scanning path using the time optimal gradient waveform. - View Dependent Claims (18, 19)
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Specification