公开(公告)号：US5365927A

公开(公告)日：1994-11-22

申请号：US146345

申请日：1993-11-02

申请人： Peter B. Roemer ,  Samuel M. Blumenfeld ,  Kirby G. Vosburgh ,  Harvey E. Cline ,  William D. Barber ,  William E. Lorensen ,  Richard L. St. Peters ,  John F. Schenck ,  Charles L. Dumoulin ,  Robert D. Darrow ,  Christopher J. Hardy

发明人： Peter B. Roemer ,  Samuel M. Blumenfeld ,  Kirby G. Vosburgh ,  Harvey E. Cline ,  William D. Barber ,  William E. Lorensen ,  Richard L. St. Peters ,  John F. Schenck ,  Charles L. Dumoulin ,  Robert D. Darrow ,  Christopher J. Hardy

IPC分类号： G01R33/48 ,  A61B5/055 ,  G01R33/28 ,  G01R33/38 ,  G01R33/385 ,  G01R33/54 ,  G01R33/563

CPC分类号： G01R33/385 ,  G01R33/3806 ,  G01R33/285 ,  G01R33/4804 ,  G01R33/543 ,  G01R33/563

摘要： A magnetic resonance (MR) imaging system for use in a medical procedure employs an open main magnet allowing access to a portion of a patient within an imaging volume, for producing a main magnetic field over the imaging volume; a set of open gradient coils which provide magnetic fields gradients over the imaging volume without restricting access to the imaging volume; a radiofrequency coil set for transmitting RF energy into the imaging volume to nutate nuclear spins within the imaging volume and receive an MR response signal from the nuclear spins; and a pointing device for indicating the position and orientation of a plane in which an image is to be acquired; an image control means for operating power supplies for the gradient coils and the RF coils to acquire an MR signal from the desired imaging plane; and a computation unit for constructing an image of the desired imaging plane. The MR imaging system is intended to operate to provide images to a physician during medical procedures to guide the physician in his procedures.

摘要翻译： 用于医疗过程的磁共振（MR）成像系统采用打开的主磁体，其允许进入成像体积内的患者的一部分，用于在成像体积上产生主磁场; 一组开放的梯度线圈，其在成像体积上提供磁场梯度，而不限制对成像体积的访问; 射频线圈组，用于将RF能量传输到成像体积中，以在成像体积内盘旋核自旋，并从核自旋接收MR响应信号; 以及指示装置，用于指示要获取图像的平面的位置和方位; 图像控制装置，用于操作梯度线圈和RF线圈的电源，以从期望的成像平面获取MR信号; 以及用于构造所需成像平面的图像的计算单元。 MR成像系统旨在在医疗程序期间向医生提供图像以在他的程序中指导医师。

公开(公告)号：US4030116A

公开(公告)日：1977-06-14

申请号：US577999

申请日：1975-05-16

申请人： Samuel M. Blumenfeld

发明人： Samuel M. Blumenfeld

IPC分类号： C30B13/02 ,  C30B13/06 ,  H01L21/24 ,  H01L31/00 ,  H01L29/06 ,  H01L29/04

CPC分类号： H01L21/24 ,  C30B13/02 ,  C30B13/06 ,  H01L31/00

摘要： A thermal gradient zone melting technique is employed to migrate an array of metal buttons through a body of semiconductor material to form high aspect ratio P-N junctions therein. Semiconductor devices embodying such P-N junctions are suitable for employment in X-ray and infrared detection and imaging. Each button preferably has the configuration of an equilateral triangle and the array preferably has a hexagonal configuration.

摘要翻译： 使用热梯度区熔化技术将金属按钮阵列迁移穿过半导体材料体以在其中形成高纵横比P-N结。 体现这种P-N结的半导体器件适用于X射线和红外检测和成像。 每个按钮优选地具有等边三角形的构造，并且阵列优选地具有六边形构造。