| US 7,394,253 B2 | ||
| Radio frequency coil assembly and magnetic resonance imaging apparatus | ||
| Kazuya Okamoto, Saitama (Japan); Shinji Mitsui, Nasushiobara (Japan); and Manabu Ishii, Otawara (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan); and Toshiba Medical Systems Corporation, Otawara-Shi, Tochigi-Ken (Japan) | ||
| Filed on Nov. 16, 2005, as Appl. No. 11/274,478. | ||
| Claims priority of application No. P2004-331914 (JP), filed on Nov. 16, 2004; and application No. P2005-173920 (JP), filed on Jun. 14, 2005. | ||
| Prior Publication US 2006/0267586 A1, Nov. 30, 2006 | ||
| Int. Cl. G01V 3/00 (2006.01) | ||
| U.S. Cl. 324—318 | 31 Claims |
| 1. A radio frequency coil assembly for receiving a radio frequency magnetic resonance signal generated in a tested person
based on a gradient magnetic field pulse and a radio frequency magnetic field pulse applied to the tested person under a static
magnetic field according to a predetermined sequence, the radio frequency coil assembly comprising:
a plurality of first radio frequency coils which are arranged to be adjacent to each other in a first direction; and
a second radio frequency coil which is structurally decoupled from the first radio frequency coils
wherein at least one of said coils has a shape different from another one of said coils to increase local sensitivity,
wherein the second radio frequency coil is disposed in the first direction to cover an image-picked-up region substantially
equivalent to the image-picked-up region which is covered by the first radio frequency coils, and
wherein the second radio frequency coil is a single cross coil which is shaped to cross at least N times in the first direction,
and wherein N is a number of the first radio frequency coils.
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