Arterial spin labeling in which acoustic noise emission is suppressed and method of operating the same

摘要

A magnetic resonance imaging (MRI) system (100, 600) is provided that generates information indicative of fluid flow according to a pseudo-continuous arterial spin labeling (pCASL) method. The MRI system has a first gradient (GR) pulse sequence (207) having a sinusoidal waveform including multiple cycles and a half-wave rectified sinusoidal waveform including multiple cycles and synchronized with the first GR pulse sequence A quasi-continuous arterial spin labeling (pCASL) pulse sequence (200) comprising at least a radio frequency (RF) pulse sequence (205) Label a part, collect label image information and control image information of fluid flow in a proximal imaging region downstream of the labeling region, and / or difference between collected label image information and control image information At least one configured to generate image information according to It may include a controller (104,610). A sinusoidal gradient waveform results in less acoustic noise in the execution of the pulse sequence.