Yokogawa Medical Systems, Limited

Ge Medical Systems Global Technology Company, LLC

Ge Yokogawa Medical Systems, Limited

Yokogawa Hokushin Electric Corp.

Hideaki Uno

Tadashi Ogawa

Yuji Inoue

Bu-Xin Xu

Weijun Shen

Keiki Yamaguchi

Jinhua Huang

Ronald Floyd Lochner

Hirofumi Yanagita

Geer Ward

Tsunemoto Suzuki

Yoshiyuki Ogawa

Misao Baba

Jinsheng Zheng

Shigeo Nagano

Yoshifumi Higa

Yoshiaki Tsujii

A method for positioning permanent magnetic blocks includes providing a plurality of magnetized blocks, positioning the magnetized blocks on a yoke in a row by applying a mechanical force at a first end of the row with a first clamping member and at a second end of the row with a second clamping member, and repositioning the blocks by reducing the mechanical force at the first end by moving the first clamping member away from the first end, and moving the second clamping member toward the second end.

Methods and apparatus for positioning permanent magnetic blocks

In order to provide a magnetic field stabilization method, magnetic field generating apparatus and magnetic resonance imaging apparatus that is not affected by the temperature distribution in an installation space, in stabilizing a magnetic field of a magnetic field generating apparatus,having a pair of permanent magnets facing each other with a space interposed and yokes constituting a magnetic circuit for the permanent magnets, heat quantities to be applied to a plurality of positions are individually controlled (,) based on the temperatures detected at a plurality of positions,on the yoke to stabilize the respective temperatures at the plurality of positions.

Magnetic field stabilization method, magnetic field generating apparatus and magnetic resonance imaging apparatus

CAT scanner

A table mechanism suitable for use in a tomographic system, such as an X-ray computerized tomograph, has a table movable upwardly and downwardly by a parallel link mechanism. The distance of horizontal movement of a cradle on the table can be automatically compensated for, dependent on an angle of angular movement of the parallel link mechanism, while holding the cradle and a gantry, relatively positioned in a constant relation. A side of the parallel link mechanism is covered with a cover mechanism having a relatively small area.

Table mechanism

An apparatus for examining an input signal current from an X-ray detector in a computerized tomograph, wherein an apparatus is used to once charge a capacitor in each of a plurality of channels with the input signal current, and to read the charged voltage later to measure the strength of the respective input signals. To eliminate the effects of cross-talk, leakage current, and off-set factors, a reset switch alone or together with associated circuit elements are used. In one embodiment the reset switch is used to discharge distributed capacitance after reading of one channel capacitor and before the discharging of the next channel capacitor. In another embodiment the true input signal together with error factors are first measured and stored, and then the error factors are measured, and then such error factors are subtracted from the stored combined signal, to produce an output signal which reflects the true input signal. In another embodiment, the error factors are first measured, averaged and stored, and then the true input signal together with error factors are measured and stored, and then the two stored signals are retrieved and the error factor removed, thereby to produce an output signal which reflects the true input signal.

Multichannel current measuring apparatus for X-ray computerized tomograph

Growing community of inventors

Tokyo, Japan

Hideaki Uno