Steady state dark blood magnetic resonance imaging
First Claim
1. A computer-readable medium storing computer-executable instructions that when executed by a computer cause the computer to perform a method, the method comprising:
- controlling a magnetic resonance imaging (MRI) apparatus to produce a steady state pulse sequence; and
controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence;
where the steady state pulse sequence is characterized by;
regularly spaced in time slice selection excitation pulses to excite a region to be imaged in the object to be imaged using a consistent repetition time (TR),a readout module, anda magnetization preparation module,where during a magnetization preparation module a gradient associated with imaging is not active, a gradient associated with slice selection is active, and RF pulses associated with slice selection are active, andwhere signals from which an MR image of the object to be imaged can be reconstructed are to be acquired during a readout module.
1 Assignment
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Accused Products
Abstract
Systems, methods, and other embodiments associated with steady state dark blood magnetic resonance imaging MRI are described. One example method includes controlling an MRI apparatus to produce a steady state pulse sequence. The example method may also include controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence. The steady state pulse sequence is different from conventional steady state pulses in that it is characterized by regularly spaced slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a set of readout modules, and a set of a magnetization preparation modules. A magnetization preparation module is characterized by gradients associated with imaging not being active, gradients associated with slice selection being active, and RF pulses associated with slice selection being active.
17 Citations
20 Claims
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1. A computer-readable medium storing computer-executable instructions that when executed by a computer cause the computer to perform a method, the method comprising:
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controlling a magnetic resonance imaging (MRI) apparatus to produce a steady state pulse sequence; and controlling the MRI apparatus to generate radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence; where the steady state pulse sequence is characterized by; regularly spaced in time slice selection excitation pulses to excite a region to be imaged in the object to be imaged using a consistent repetition time (TR), a readout module, and a magnetization preparation module, where during a magnetization preparation module a gradient associated with imaging is not active, a gradient associated with slice selection is active, and RF pulses associated with slice selection are active, and where signals from which an MR image of the object to be imaged can be reconstructed are to be acquired during a readout module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. The computer-readable medium of claiml4, the method comprising:
controlling the MRI apparatus to reconstruct an MR image from the MR signal and to display the MR image on a display.
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16. An apparatus, comprising:
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a pulse logic to produce a steady state pulse sequence that includes a set of readout modules and a set of magnetization preparation modules; and an output logic to produce radio frequency (RF) energy and magnetic gradients associated with the steady state pulse sequence; where the steady state pulse sequence includes; regularly spaced in time slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a readout module, and a magnetization preparation module, where during a magnetization preparation module a gradient associated with magnetic resonance (MR) imaging is not active, a gradient associated with slice selection is active, and RF pulses associated with slice selection are active, and where signal from which an MR image can be reconstructed is to be acquired from the object to be imaged during a readout module. - View Dependent Claims (17, 18, 19)
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20. A system, comprising:
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means for generating a steady state pulse sequence having; regularly spaced slice selection excitation pulses to excite a region to be imaged in an object to be imaged using a consistent repetition time (TR), a readout module, and a magnetization preparation module, where during a magnetization preparation module a gradient associated with MR imaging is not active, a gradient associated with slice selection is active, and RF pulses associated with slice selection are active, and where signal from which an MR image can be reconstructed is to be acquired from the object to be imaged during a readout module; means for applying the steady state pulse sequence to an object to be imaged; and means for reconstructing a magnetic resonance image from signals acquired from the object to be imaged in response to applying the steady state pulse sequence.
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Specification