Magnetic resonance imaging
AssigneeViewRay Systems, Inc.
InventorJames F. Dempsey
Life of this patent
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Abstract
Improved magnetic resonance imaging systems, methods and software are described including a low field strength main magnet, a gradient coil assembly, an RF coil system, and a control system configured for the acquisition and processing of magnetic resonance imaging data from a patient while utilizing a sparse sampling imaging technique.
Claims8
A magnetic resonance imaging system (MRI) comprising:
- a main magnet having a field strength of between 0.1 and 0.5 Tesla;
- a gradient coil assembly;
- an RF coil system;
- and
- a control system configured for acquisition and processing of magnetic resonance imaging data from a human patient and configured to utilize a sparse sampling imaging technique without parallel imaging;
- wherein the control system is further configured for an RF bandwidth of less than 1800 Hz.
A magnetic resonance imaging system (MRI) comprising:
- a main magnet having a field strength of between 0.1 and 0.5 Tesla;
- a gradient coil assembly;
- an RF coil system;
- and
- a control system configured for acquisition and processing of magnetic resonance imaging data from a human patient and configured to utilize a sparse sampling imaging technique without parallel imaging;
- wherein the control system is configured to employ pulse sequences, wherein the pulse sequences do not require dephasing pulses.
A computer program product comprising a non-transient, machine-readable medium storing instructions which, when executed by at least one programmable processor, cause the at least one programmable processor to perform operations comprising:
- acquiring, through a control system, magnetic resonance imaging data from a human patient through a magnetic resonance imaging system (MRI) having a main magnet with a field strength of between 0.1 and 0.5 Tesla, a gradient coil assembly and an RF coil system, the acquiring utilizing a sparse sampling imaging technique without parallel imaging;
- wherein the control system is further configured for an RF bandwidth of less than 1800 Hz;
- and
- processing the magnetic resonance imaging data, the processing including reconstructing images of the human patient.
A computer program product comprising a non-transient, machine-readable medium storing instructions which, when executed by at least one programmable processor, cause the at least one programmable processor to perform operations comprising:
- acquiring magnetic resonance imaging data from a human patient through a magnetic resonance imaging system (MRI) having a main magnet with a field strength of between 0.1 and 0.5 Tesla, a gradient coil assembly and an RF coil system, the acquiring utilizing a sparse sampling imaging technique without parallel imaging;
- wherein the acquiring employs pulse sequences, wherein the pulse sequences do not require dephasing pulses;
- and
- processing the magnetic resonance imaging data, the processing including reconstructing images of the human patient.
A magnetic resonance imaging system (MRI) comprising:
- a main magnet having a field strength of between 0.1 and 0.5 Tesla;
- a gradient coil assembly;
- wherein the gradient coil assembly is operable to create a gradient field with gradient field strengths, wherein the gradient field strengths are below 20 mT/m an RF coil system;
- and
- a control system configured for acquisition and processing of magnetic resonance imaging data from a human patient and configured to utilize a sparse sampling imaging technique without parallel imaging.
A magnetic resonance imaging system (MRI) comprising:
- a main magnet having a field strength of between 0.1 and 0.5 Tesla;
- a gradient coil assembly;
- an RF coil system;
- wherein the RF coil system is operable to create flip angles, wherein the flip angles are greater than 40 degrees;
- and
- a control system configured for acquisition and processing of magnetic resonance imaging data from a human patient and configured to utilize a sparse sampling imaging technique without parallel imaging.
A computer program product comprising a non-transient, machine-readable medium storing instructions which, when executed by at least one programmable processor, cause the at least one programmable processor to perform operations comprising:
- acquiring magnetic resonance imaging data from a human patient through a magnetic resonance imaging system (MRI) having a main magnet with a field strength of between 0.1 and 0.5 Tesla, a gradient coil assembly and an RF coil system, the acquiring utilizing a sparse sampling imaging technique without parallel imaging;
- wherein the acquiring utilizes gradient field strengths that are below 20 mT/m;
- and
- processing the magnetic resonance imaging data, the processing including reconstructing images of the human patient.
A computer program product comprising a non-transient, machine-readable medium storing instructions which, when executed by at least one programmable processor, cause the at least one programmable processor to perform operations comprising:
- acquiring magnetic resonance imaging data from a human patient through a magnetic resonance imaging system (MRI) having a main magnet with a field strength of between 0.1 and 0.5 Tesla, a gradient coil assembly and an RF coil system, the acquiring utilizing a sparse sampling imaging technique without parallel imaging;
- wherein the acquiring utilizes flip angles that are greater than 40 degrees;
- and
- processing the magnetic resonance imaging data, the processing including reconstructing images of the human patient.
Dependencies are inferred from the claim text.