公开(公告)号：US07863899B2

公开(公告)日：2011-01-04

申请号：US11578387

申请日：2005-05-02

申请人： Luigi Satragno ,  Alessandro Quattrini ,  Stefano Pittaluga ,  Eugenio Biglieri

发明人： Luigi Satragno ,  Alessandro Quattrini ,  Stefano Pittaluga ,  Eugenio Biglieri

IPC分类号： G01V3/00

CPC分类号： G01R33/383

摘要： A magnet structure for an MRI apparatus utilizing a permanent magnet, which apparatus has an inverted U shape with two essentially parallel opposed pole pieces, which are supported at a predetermined distance from each other by an inverted U-shaped magnetic yoke, which pole pieces and/or at least a portion of which yoke delimit a cavity for receiving at least a part of the patient's body, whereas a partial volume is generated in the volume of said cavity, which has such magnetic field values as to provide MRI images of a sufficient quality to enable the use thereof as diagnostic images, i.e. a so-called imaging volume. According to the invention, the distance (D1) between the pole pieces (1, 2) of the magnet structure is of 36 to 42 cm, and the pole pieces (1, 2) have a surface area of 4500 to 5500 cm2. The invention also relates to an MRI imaging apparatus, particularly designed for the spine region, or a part thereof, and which has a magnet structure as described above.

摘要翻译： 一种用于使用永磁体的MRI装置的磁体结构，该装置具有倒U形，具有两个基本上平行的相对极片，它们通过倒置的U形磁轭彼此预定距离地支撑，该极片和 或者其至少一部分轭限定空腔以容纳患者身体的至少一部分，而在所述空腔的体积中产生部分体积，其具有这样的磁场值，以提供足够的MRI图像 质量使其能够用作诊断图像，即所谓的成像体积。 根据本发明，磁体结构的极片（1,2）之间的距离（D1）为36〜42cm，极片（1,2）的表面积为4500〜5500cm 2。 本发明还涉及一种特别设计用于脊柱区域或其一部分的MRI成像设备，并且具有如上所述的磁体结构。