PSEUDO-CONTINUOUS ASYMMETRIC SIGNAL TARGETING ALTERNATING RADIO FREQUENCY (pASTAR) FOR MAGNETIC RESONANCE ANGIOGRAPHY

摘要

A magnetic resonance imaging (MRI) system, method and/or computer readable medium is configured to effect MR imaging based upon arterial spin labeling (ASL) using a tagging image and a control image. The tagging image is based upon applying a tagging pulse train including a plurality of saturation pulses to a tagging area followed by applying a first imaging pulse train to an imaging area; and the control image is based upon applying a control pulse train to a control area followed by applying a second imaging pulse train to the imaging area. The tagging area, the control area, and the imaging area are located at respectively different positions in relation to the object being imaged.

主权项

1. A magnetic resonance imaging (MRI) system for effecting MR imaging based upon arterial spin labeling (ASL), said MRI system comprising:
an MRI gantry including a static magnetic field coil, gradient magnetic field coils, at least one radio frequency (RF) coil configured to couple with an object located in an imaging volume; an MRI sequence controller configured to perform an RF pulse sequence comprising (1) applying a tagging pulse train including a plurality of saturation pulses to a tagging area followed by applying a first imaging pulse train to an imaging area, and (2) applying a control pulse train to a control area followed by applying a second imaging pulse train to the imaging area, wherein the tagging area, the control area, and the imaging area are located at respectively different positions in relation to the object; and at least one digital data processor configured to:
receive first digital data and second digital data corresponding respectively to NMR signals responsive to the first imaging pulse train and to NMR signals responsive to the second imaging pulse train;generate at least one tag image from the received first digital data and at least one control image from the received second digital data;form a diagnostic MR image of the object based upon the at least one tag image and the at least one control image; andoutput the diagnostic MR image to a display, or data storage in a non-transient digital data storage medium, or an outbound data transmission port.