<；P>；PROBLEM TO BE SOLVED: To provide an MRI apparatus which can image a blood flow without prescribing a contrast medium and, even a blood flow is varying in a flow state, maximally making the best use of inflow effect of blood flow, to acquire an MRA image wherein the contrast between the blood flow and the substance part is improved. <；P>；SOLUTION: The MRI apparatus of the embodiment is configured to image a desired area of a subject. The MRI apparatus includes a monitor to monitor intensity of an echo signal acquired by exciting the desired area at a time, an instrument to perform MRI scan for imaging the desired area at a time point when intensity of the echo signal exceeds a predetermined value, and an image generator to perform reconstruction processing to echo signals collected by performing the MRI scan for imaging to produce an image. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
