Patent ID: 9429636
Filing Date: 2016-08-30
CPC Classification: G01R

Claim Text:
1. A magnetic resonance imaging system, comprising: a sequence control unit configured to control a magnetic resonance scanner to perform dynamic imaging by acquiring compressed magnetic resonance data from an imaged region of a subject including fully sampling a central portion of k-space and partially sampling a peripheral portion of k-space; a sampling unit which determines a rate of change in a concentration of a contrast agent present in the image region of the subject during the dynamic imaging based on magnetic resonance signals received by a radio frequency receiver; and a control unit which adjusts a degree of compression of the acquired magnetic resonance data during the dynamic imaging based on the determination made by the sampling unit; wherein the control unit adjusts gradient fields to decrease the central portion of k-space and increase the peripheral portion of k-space in response to an increase in the rate of change in the concentration of the contrast agent and adjusts the gradient fields to increase the central portion of k-space and decrease the peripheral portion of k-space in response to a decrease in the rate of change in the concentration of the contrast agent.