| 摘要 |
PROBLEM TO BE SOLVED: To provide forced airflow to a surface of a gradient coil in a magnet assembly of an MRI system. SOLUTION: A cylindrical magnet assembly (52) includes a cylindrical magnet (54) and a first annular gap (78) between the gradient coil (50) and the magnet (54). The gradient coil (50) mounted inside the magnet (54) includes a first manifold tube (102) having an annular shape and located in the first annular gap (78) between the gradient coil (50) and the magnet (54). The first manifold tube (102) includes at least one inlet (114) on a first side of the first manifold tube (102) and a plurality of outlet holes (115) on a second side. The apparatus also includes an gas source (108) configured to provide airflow to the inlet (114). COPYRIGHT: (C)2008,JPO&INPIT
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