公开(公告)号：US06791321B2

公开(公告)日：2004-09-14

申请号：US10173933

申请日：2002-06-18

申请人： Jacob D. Willig-Onwuachi ,  Robert W. Brown ,  Shmaryu M. Shvartsman

发明人： Jacob D. Willig-Onwuachi ,  Robert W. Brown ,  Shmaryu M. Shvartsman

IPC分类号： G01V300

CPC分类号： G01R33/561 ,  G01R33/34046 ,  G01R33/5611

摘要： In a magnetic resonance imaging apparatus, a main magnet assembly (12) produces a uniform magnetic field through an imaging region (14). An imaging region is defined within a subject by selecting gradient magnetic fields spatially encode the main magnetic field. A whole body birdcage radio frequency coil (26) excites magnetic resonance in dipoles of the subject. The resonance signals are received by the whole body coil (26) and by a second, local birdcage radio frequency coil (16). The first radio frequency coil (26) produces and is sensitive to a uniform radio frequency field in the imaging region (14) while the second radio frequency coil (28) is sensitive to a field that varies sinusoidally in space. From one radio frequency excitation, the two birdcage coils (26, 16) receive different sets of data with which to fill k-space, accelerating data collection.

摘要翻译： 在磁共振成像装置中，主磁体组件（12）通过成像区域（14）产生均匀的磁场。 通过选择对主磁场进行空间编码的梯度磁场，在对象内定义成像区域。 全身鸟笼射频线圈（26）激发受试者的偶极子中的磁共振。 谐振信号由全体线圈（26）和第二局部鸟笼射频线圈（16）接收。 第一射频线圈（26）对成像区域（14）中的均匀射频场产生并且敏感，而第二射频线圈（28）对于空间正弦变化的场敏感。 从一个射频激励，两个鸟笼线圈（26,16）接收不同的数据集合，以填充k空间，加速数据收集。