Magnetic resonance imaging apparatus

摘要

A magnetic resonance imaging apparatus performs myocardial perfusion imaging of an object. An imaging unit acquires image data by imaging a heart of the object in synchronism with a biological signal from the object. An image generating unit generates an image concerning the heart of the object based on the image data. The imaging unit applies a probe pulse for detecting body motion of the object before imaging of the heart, and applies a spatial nonselective saturation pulse before application of the probe pulse, and a local selective pulse for flipping back a flip angle of the spatial nonselective saturation pulse with regard to a region to which the probe pulse is applied.

主权项

1. A magnetic resonance imaging (MRI) apparatus which performs myocardial perfusion imaging of an object, the magnetic resonance imaging (MRI) apparatus comprising:
an MRI gantry having components including static and gradient magnetic field generators, at least one radio/frequency (RF) coil coupled to an imaging region, RF receiver and transmitter circuits and control circuits connected to control said components, said control circuits including at least one central processing unit and associated memory configured to effect acquisition of image data by imaging a heart of the object in synchronism with a biological signal from the object; and generating an image concerning the heart of the object based on the image data, wherein the control circuits are configured to:
apply an RF probe pulse to a first region including the object for detecting body motion of the object before imaging of the heart, and to apply, before application of the RF probe pulse, (a) a spatially nonselective RF saturation pulse, and (b) a local spatially selective RF pulse for flipping back to a second region including the first region after the spatially nonselective RF saturation pulse is applied; andapply an RF excitation pulse for MR imaging the heart while adjusting an excited slice position of the heart in accordance with an object's body motion detected by the RF probe pulse.