发明名称 |
Magnetic resonance imaging method and apparatus |
摘要 |
High-speed imaging by a propeller MRI method is enabled as a whole thanks to high-speed computation by preventing an aliasing artifact even if the echoes acquired by one blade are decreased and by reducing the imaging time and the computational complexity. In a magnetic resonance imaging apparatus, an RF pulse is applied to a subject placed in a static magnetic field, a plurality of gradient magnetic fields are applied, and induced nuclear magnetic resonance signal (echo signal) is received by means of a multiple RF receiving coil unit composed of two or more RF receiving coils. A parallel MRI method is applied to echo signals acquired by reducing the echoes per blade of a propeller MRI method so as to remove the artifact to produce a reconstructed image. The reconstructed image is subjected to inverse Fourier transform to return it to the echo signals in a measurement space corresponding to the blade. The echo signals are girded in an arbitrarily predetermined coordinate system for image and combined. Such a processing is conducted for the echo signals of all the blades. A final image is reconstructed using the echo signals after the image creation in the coordinate system for image.
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申请公布号 |
US2006232273(A1) |
申请公布日期 |
2006.10.19 |
申请号 |
US20050553900 |
申请日期 |
2005.10.21 |
申请人 |
TAKIZAWA MASAHIRO;TAKAHASHI TETSUHIKO;TANIGUCHI YO |
发明人 |
TAKIZAWA MASAHIRO;TAKAHASHI TETSUHIKO;TANIGUCHI YO |
分类号 |
G01R33/48;G01V3/00;A61B5/05;A61B5/055;G01R33/3415;G01R33/54;G01R33/561 |
主分类号 |
G01R33/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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