Patent ID: 8344730
Filing Date: 2013-01-01
Classification: A61B,G01R

Abstract:
1. A magnetic resonance imaging apparatus comprising: an acquisition unit which acquires, by a first sequence, a magnetic resonance signal generated in an imaging region before administration of a contrast agent and which also acquires, by a second sequence, magnetic resonance signal generated in the imaging region after the administration of the contrast agent, the first sequence dephasing a magnetization after radio frequency excitation to make a greater signal reduction in a first magnetic resonance signal component regarding a fluid flowing within a first flow velocity range than in a second magnetic resonance signal component regarding the fluid flowing within a second flow velocity range less than the first flow velocity range, the second sequence bringing the magnetic resonance signal generated in the imaging region after the administration of the contrast agent to a level corresponding to the concentration of the contrast agent; a reconstruction unit which reconstructs a first image and a second image on the basis of the magnetic resonance signals respectively acquired by the first and second sequences, the first image and the second image showing spatial distributions of the fluid in the imaging region to reflect the intensities of the magnetic resonance signals; and a generation unit which generates a third image on the basis of the first image and the second image, the third image showing the degree of a change of the fluid after the administration of the contrast agent from a state before the administration of the contrast agent.