US Patent No: 5,636,636

Number of patents in Portfolio can not be more than 2000

Magnetic resonance method for imaging a moving object and device for carrying out the method

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An MR imaging method and device in which an object to be examined is displaced at a defined speed relative to an examination zone and a plurality of sequences act on the examination zone in the presence of a steady, uniform magnetic field, each of the sequences including at least one RF pulse and possibly a phase encoding gradient, and a MR signal arising in the examination zone, after transposition to another frequency range by means of an oscillator signal, is used to produce an MR image. The method aims to enhance the quality of the MR image produced by preventing movement artefacts. This is achieved in that from one sequence to another, one or more of the frequency of the RF pulses, the frequency of the oscillator signal, and the phase position of the oscillator signal is adjusted in conformity with the position of the object to be examined relative to the examination zone so that a part of the object which is imaged in the MR image moves relative to the examination zone in synchronism with the object.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
U.S. PHILIPS CORPORATIONNEW YORK, NY11381

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Holz, Dietrich J K Hamburg, DE 3 45
Kuhn, Michael H Hamburg, DE 17 297

Cited Art Landscape

Patent Info (Count) # Cites Year
 
APOGEE MEDICAL PRODUCTS, INC. (2)
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BONUTTI SKELETAL INNOVATIONS LLC (1)
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HITACHI MEDICAL CORPORATION (1)
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Picker International, Inc. (1)
5,423,315 Magnetic resonance imaging system with thin cylindrical uniform field volume and moving subjects 45 1993
 
SRI INTERNATIONAL (1)
5,154,178 Method and apparatus for obtaining in-vivo NMR data from a moving subject 55 1990
 
U.S. PHILIPS CORPORATION (1)
5,111,144 Magnetic resonance tomography method and magnetic resonance tomography apparatus for performing the method 6 1990

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (3)
7,496,396 Method of cyclic magnetic resonance imaging 0 2003
7,405,564 Sub-sampled moving table MRI for at least two adjacent fields of view 0 2003
7,224,164 Method of monitoring a magnetic field drift of a magnetic resonance imaging apparatus 1 2004
 
SIEMENS AKTIENGESELLSCHAFT (3)
7,796,796 Operating method for an image-generating medical engineering assembly and articles associated herewith 1 2006
7,729,525 Image evaluation method for two-dimensional projection images and items corresponding thereto 3 2006
8,620,408 Method for representing two-dimensional projection images and objects corresponding thereto 0 2007
 
GENERAL ELECTRIC COMPANY (2)
7,251,520 Method and apparatus of slice selective magnetization preparation for moving table MRI 6 2003
7,411,397 Method and apparatus of slice selective magnetization preparation for moving table MRI 3 2007
 
KABUSHIKI KAISHA TOSHIBA (2)
7,110,805 Magnetic resonance imaging for a plurality of selective regions set to object continuously moved 3 2001
7,756,566 Magnetic resonance imaging for a plurality of selective regions set to object continuously moved 2 2006
 
MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH (2)
6,912,415 Method for acquiring MRI data from a large field of view using continuous table motion 12 2001
7,346,383 Method for acquiring MRI data from variable fields of view during continuous table motion 1 2004
 
STEREOTAXIS, INC. (2)
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THE METHODIST HOSPITAL (1)
8,170,307 Automated wall motion quantification in aortic dissections 2 2008
 
TOSHIBA MEDICAL SYSTEMS CORPORATION (1)
7,696,753 corrections using reference and object average units 0 2008
 
U.S. PHILIPS CORPORATION (1)
5,969,525 MR imaging apparatus 13 1997
 
UNIVERSITAETSKLINIKUM FREIBURG (1)
7,148,687 Method for the acquisition of moving objects through nuclear magnetic resonance tomography 0 2005
 
WISCONSIN ALUMNI RESEARCH FOUNDATION (1)
6,671,536 Magnetic resonance angiography using floating table projection imaging 18 2001