Magnetic resonance imaging apparatus and frequency shift measuring method
AssigneeToshiba Medical Systems Corporation
InventorsMitsukazu Kamata, Masaaki Umeda
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Abstract
According to one embodiment, a magnetic resonance imaging apparatus includes a phase image generating unit, an image value acquisition unit and a frequency shift calculation unit. The phase image generating unit executes a sequence including an application of a bipolar gradient pulse and thereby generates a first phase image. The image value acquisition unit acquires an image value of the first phase image. The frequency shift calculation unit determines an amount of frequency shift per unit amount of gradient magnetic field based on magnetic field strength of the bipolar gradient pulse and on the image value of the first phase image.
Claims9
A magnetic resonance imaging apparatus comprising:
- a phase image generating unit configured to execute a sequence including an application of a bipolar gradient pulse and thereby generate a first phase image;
- an image value acquisition unit configured to acquire an image value of the first phase image;
- and
- a frequency shift calculation unit configured to determine an amount of frequency shift per unit amount of gradient magnetic field based on the magnetic field strength of the bipolar gradient pulse and on the image value of the first phase image.
The frequency shift measuring method comprising:
- executing a sequence including an application of a bipolar gradient pulse and thereby generating a first phase image;
- acquiring an image value of the first phase image;
- and
- determining an amount of frequency shift per unit amount of gradient magnetic field based on the magnetic field strength of the bipolar gradient pulse and on the image value of the first phase image.
Dependencies are inferred from the claim text.