| 发明名称 |
MAGNETIC RESONANCE IMAGING APPARATUS AND ARTIFACT SUPPRESSION METHOD THEREOF |
| 摘要 |
According to at least one of embodiments, a magnetic resonance imaging apparatus includes a superconducting magnet configured to generate a static magnetic field; a cryocooler configured to cool down the superconducting magnet in a refrigeration cycle in which mechanical fluctuation with a predetermined period is included; a sequence controller configured to acquire magnetic resonance signals for generating a diagnostic image from an object; and processing circuitry configured to correct phase fluctuation included in the magnetic resonance signals for generating a diagnostic image acquired by the sequence controller, the phase fluctuation being generated by periodic fluctuation of the static magnetic field caused by mechanical fluctuation of the cryocooler. |
| 申请公布号 |
US2017030991(A1) |
申请公布日期 |
2017.02.02 |
| 申请号 |
US201615211181 |
申请日期 |
2016.07.15 |
| 申请人 |
TOSHIBA MEDICAL SYSTEMS CORPORATION |
发明人 |
NOZAKI Seiji;Sugiura Satoshi |
| 分类号 |
G01R33/565;G01R33/38;G01R33/3815 |
主分类号 |
G01R33/565 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A magnetic resonance imaging apparatus comprising:
a superconducting magnet configured to generate a static magnetic field; a cryocooler configured to cool down the superconducting magnet in a refrigeration cycle in which mechanical fluctuation with a predetermined period is included; a sequence controller configured to acquire magnetic resonance signals for generating a diagnostic image from an object; and processing circuitry configured to correct phase fluctuation included in the magnetic resonance signals for generating a diagnostic image acquired by the sequence controller, the phase fluctuation being generated by periodic fluctuation of the static magnetic field caused by mechanical fluctuation of the cryocooler. |
| 地址 |
Otawara-shi JP |
