US Patent No: 6,483,305

Number of patents in Portfolio can not be more than 2000

Magnetic resonance method for reducing residual magnetization and adjusting the amplitude of gradient pulses

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ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

In order to reduce residual magnetization caused by gradient pulses, for a gradient pulse having either a positive or negative polarity, a residual magnetization reducing pulse is applied after applying the gradient pulse, or for two or more successively applied gradient pulses having different polarities, the amplitude of the gradient pulse(s) is adjusted to reduce residual magnetization thereafter.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GE HEALTHCARE JAPAN CORPORATIONTOKYO70

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyamoto, Shoei Tokyo, JP 9 34

Cited Art

Patent Info (Count) # Cites Year
 
GE HEALTHCARE JAPAN CORPORATION (3)
5,729,139 MRI apparatus 12 1996
6,127,825 Method of phase shift measurement, method of phase correction, and MRI apparatus 14 1997
6,218,834 Method of shift measurement, method of phase shift correction, and MRI apparatus 13 2000
 
GENERAL ELECTRIC COMPANY (3)
4,973,906 Flow compensated NMR fast pulse sequence 30 1989
5,280,244 Gradient moment nulling in a fast spin echo NMR pulse sequence 10 1992
6,043,656 Method for compensating an MRI system for residual magnetization 10 1998
 
PICKER INTERNATIONAL, INC. (2)
5,055,790 SSFP imaging technique with improved T1 contrast 14 1989
5,311,133 Concurrent generation of multiple images in fast (TR 16 1992
 
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC (1)
2002/0050,816 MR imaging method, phase error measuring method, and MRI apparatus 4 2001
 
SIEMENS AKTIENGESELLSCHAFT (1)
6,400,151 Method and apparatus for the acquisition of data for magnetic resonance imaging 20 2000

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC (2)
6,628,116 Process and apparatus to remove stimulated echo artifacts caused by interactions of a preparation sequence with a gradient echo sequence in MR imaging 4 2001
6,696,835 Second-order static magnetic field correcting method and MRI apparatus 1 2001
 
HITACHI MEDICAL CORPORATION (2)
7,348,779 Magnetic resonance imaging method and system 0 2004
7,449,885 Magnetic resonance imaging method and apparatus 0 2007
 
KABUSHIKI KAISHA TOSHIBA (2)
7,110,805 Magnetic resonance imaging for a plurality of selective regions set to object continuously moved 2 2001
7,756,566 Magnetic resonance imaging for a plurality of selective regions set to object continuously moved 2 2006
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (1)
7,046,003 Reduced-time variable rate excitation pulses for rapid MRI 5 2004

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