Abstract: A system and method for reducing MRI-generated acoustic noise is disclosed. A system control of an MRI apparatus causes a plurality of gradient coils and an RF coil assembly in the MRI apparatus to generate pulse sequences that each cause an echo train to form and acquire blades of k-space data of the subject of interest from the pulse sequences, with the blades being rotated about a section of k-space compared to every other blade. The system control also causes the plurality of gradient coils to generate gradient pulses in each pulse sequence having an optimized gradient waveform that reduces an acoustic noise level generated thereby and causes the RF coil assembly to generate a 180 degree prep pulse subsequent to generation of an RF excitation pulse and prior to generation of a first RF refocusing pulse, the 180 degree prep pulse minimizing echo spacing in the echo train.

Abstract: A system and method for reducing MRI-generated acoustic noise is disclosed. A system control of an MRI apparatus causes a plurality of gradient coils and an RF coil assembly in the MRI apparatus to generate pulse sequences that each cause an echo train to form and acquire blades of k-space data of the subject of interest from the pulse sequences, with the blades being rotated about a section of k-space compared to every other blade. The system control also causes the plurality of gradient coils to generate gradient pulses in each pulse sequence having an optimized gradient waveform that reduces an acoustic noise level generated thereby and causes the RF coil assembly to generate a 180 degree prep pulse subsequent to generation of an RF excitation pulse and prior to generation of a first RF refocusing pulse, the 180 degree prep pulse minimizing echo spacing in the echo train.

Abstract: A system and method for reducing MRI-generated acoustic noise is disclosed. A system control of an MRI apparatus causes a plurality of gradient coils and an RF coil assembly in the MRI apparatus to generate pulse sequences that each cause an echo train to form and acquire blades of k-space data of the subject of interest from the pulse sequences, with the blades being rotated about a section of k-space compared to every other blade. The system control also causes the plurality of gradient coils to generate gradient pulses in each pulse sequence having an optimized gradient waveform that reduces an acoustic noise level generated thereby and causes the RF coil assembly to generate a 180 degree prep pulse subsequent to generation of an RF excitation pulse and prior to generation of a first RF refocusing pulse, the 180 degree prep pulse minimizing echo spacing in the echo train.

Abstract: A system and method for reducing MRI-generated acoustic noise is disclosed. A system control of an MRI apparatus causes a plurality of gradient coils and an RF coil assembly in the MRI apparatus to generate pulse sequences that each cause an echo train to form and acquire blades of k-space data of the subject of interest from the pulse sequences, with the blades being rotated about a section of k-space compared to every other blade. The system control also causes the plurality of gradient coils to generate gradient pulses in each pulse sequence having an optimized gradient waveform that reduces an acoustic noise level generated thereby and causes the RF coil assembly to generate a 180 degree prep pulse subsequent to generation of an RF excitation pulse and prior to generation of a first RF refocusing pulse, the 180 degree prep pulse minimizing echo spacing in the echo train.

Abstract: A system and method include a computer readable storage medium having stored thereon a computer program comprising instructions which when executed by a computer cause the computer to apply a first plurality of radio frequency (RF) pulses during a first repetition time (TR) interval of a magnetic resonance (MR) pulse sequence. The instructions also cause the computer to apply a first plurality of gradient pulses and acquire the MR data during application of each gradient pulse of the first plurality of gradient pulses between an adjacent pair of RF pulses of the first plurality of RF pulses. Each gradient pulse of the first plurality of gradient pulses is configured to allow acquisition of MR data for a respective first bladelet passing through a center of k-space, wherein the first bladelets are non-parallel with each other. The instructions also cause the computer to reconstruct the acquired MR data into an image.

Abstract: Systems, methods, and other embodiments associated with robust GRAPPA (GeneRalized Auto-calibrating Partially Parallel Acquisitions) are described. One method embodiment includes acquiring k-space data from a magnetic resonance (MR) apparatus having multiple coils and creating a set of over determined linear equations based on auto calibration signal (ACS) lines in the k-space data. The method embodiment includes calculating coil coefficients based on the set of ACS lines and then selectively manipulating a weight associated with an outlying data point to reduce the effect of the outlying data. The method embodiment includes calculating values for missing k-space data points, establishing a full k-space data set, and producing an image from the full k-space data set.

Abstract: A system and method include a computer readable storage medium having stored thereon a computer program comprising instructions which when executed by a computer cause the computer to apply a first plurality of radio frequency (RF) pulses during a first repetition time (TR) interval of a magnetic resonance (MR) pulse sequence. The instructions also cause the computer to apply a first plurality of gradient pulses and acquire the MR data during application of each gradient pulse of the first plurality of gradient pulses between an adjacent pair of RF pulses of the first plurality of RF pulses. Each gradient pulse of the first plurality of gradient pulses is configured to allow acquisition of MR data for a respective first bladelet passing through a center of k-space, wherein the first bladelets are non-parallel with each other. The instructions also cause the computer to reconstruct the acquired MR data into an image.

Abstract: Systems, methods, and other embodiments associated with robust GRAPPA (GeneRalized Auto-calibrating Partially Parallel Acquisitions) are described. One method embodiment includes acquiring k-space data from a magnetic resonance (MR) apparatus having multiple coils and creating a set of over determined linear equations based on auto calibration signal (ACS) lines in the k-space data. The method embodiment includes calculating coil coefficients based on the set of ACS lines and then selectively manipulating a weight associated with an outlying data point to reduce the effect of the outlying data. The method embodiment includes calculating values for missing k-space data points, establishing a full k-space data set, and producing an image from the full k-space data set.