Methods and Systems for Accelerated MR Imaging

摘要

A method for operating a Magnetic Resonance (MR) imaging system that includes generating radio frequency (RF) excitation pulses in a volume of patient anatomy and generating slice select magnetic field gradients for phase encoding and readout RF data acquisition in the patient anatomy. The method further includes concurrently acquiring T1 map image data of slices of an image by: (i) acquiring image calibration data using a pre-scan sequence; (ii) inverting a longitudinal magnetization in the volume of patient anatomy using a non-selective inversion recovery pulse; (iii) applying an excitation RF pulse to different slices in the volume of patient anatomy to rotate a portion of the longitudinal magnetization in a transverse direction; (iv) sampling individual slice image data of the slices in response to applying the excitation RF pulse; and (v) separating the concurrently acquired T1 map image into separate slices.

主权项

1. A method for operating a Magnetic Resonance (MR) imaging system, the method comprising:
generating radio frequency (RF) excitation pulses in a volume of patient anatomy to provide subsequent acquisition of associated RF echo data; generating slice select magnetic field gradients for phase encoding and readout RF data acquisition in the patient anatomy; concurrently acquiring T1 map image data of a plurality of two dimensional slices of an image by an acquisition process comprising:
(i) acquiring image calibration data using a pre-scan sequence;(ii) inverting a longitudinal magnetization in the volume of patient anatomy using a non-selective inversion recovery pulse;(iii) applying an excitation RF pulse to a plurality of different two dimensional slices in the volume of patient anatomy to rotate a portion of the longitudinal magnetization in a transverse direction;(iv) sampling individual slice image data of the plurality of two dimensional slices in response to applying the excitation RF pulse; and(v) separating the concurrently acquired T1 map image into separate slices.