5189372 Silencer for magnetic field gradient coils in a magnetic resonance imaging apparatus

1993 ◽  
Vol 11 (8) ◽  
pp. XLIV
Author(s):  
Yoshiki Igarashi ◽  
Goh Miyajima
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Field ◽  
Magnetic Resonance ◽  
Field Gradient ◽  
Magnetic Field Gradient ◽  
Resonance Imaging ◽  
Gradient Coils

Triaxial magnetic field gradient system for microcoil magnetic resonance imaging

2000 ◽  
Vol 71 (11) ◽  
pp. 4263 ◽  
Author(s):  
D. A. Seeber ◽  
J. H. Hoftiezer ◽  
W. B. Daniel ◽  
M. A. Rutgers ◽  
C. H. Pennington
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Field ◽  
Magnetic Resonance ◽  
Field Gradient ◽  
Magnetic Field Gradient ◽  
Gradient System ◽  
Resonance Imaging

Investigation of the spectral characteristics of low-frequency magnetic fields in different modes of operation of magnetic resonance imaging

2020 ◽  
pp. 727-727 ◽  
Author(s):  
L. V. Pokhodzey ◽  
E. A. Rudneva ◽  
Yu. P. Paltzev
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Field ◽  
Magnetic Resonance ◽  
Magnetic Fields ◽  
Spectral Characteristics ◽  
Low Frequency ◽  
Resonance Imaging ◽  
Gradient Coils ◽  
Modes Of Operation ◽  
Frequency Magnetic Field

The features of the amplitude-frequency and temporal parameters of magnetic fields created by MRI 3 T the gradient coils under various modes of its operation has studied. Low-frequency magnetic field induction changes has pulsed form - single pulses and various pulses shapes, different polarities and durations. Adequate controlled parameters for their hygienic evaluation are proposed

Spectroscopic imaging of human disease

1996 ◽  
Vol 54 ◽  
pp. 884-885
Author(s):  
D.J. Meyerhoff
Keyword(s):  
Magnetic Field ◽  
Magnetic Resonance ◽  
Field Gradient ◽  
Human Disease ◽  
Morphological Changes ◽  
Magnetic Field Gradient ◽  
Spectroscopic Imaging ◽  
Resonance Spectroscopy ◽  
Tissue Water

Magnetic Resonance Imaging (MRI) observes tissue water in the presence of a magnetic field gradient to study morphological changes such as tissue volume loss and signal hyperintensities in human disease. These changes are mostly non-specific and do not appear to be correlated with the range of severity of a certain disease. In contrast, Magnetic Resonance Spectroscopy (MRS), which measures many different chemicals and tissue metabolites in the millimolar concentration range in the absence of a magnetic field gradient, has been shown to reveal characteristic metabolite patterns which are often correlated with the severity of a disease. In-vivo MRS studies are performed on widely available MRI scanners without any “sample preparation” or invasive procedures and are therefore widely used in clinical research. Hydrogen (H) MRS and MR Spectroscopic Imaging (MRSI, conceptionally a combination of MRI and MRS) measure N-acetylaspartate (a putative marker of neurons), creatine-containing metabolites (involved in energy processes in the cell), choline-containing metabolites (involved in membrane metabolism and, possibly, inflammatory processes),

Magnetic resonance imaging: effects of magnetic field strength.

Radiology ◽  
1984 ◽  
Vol 151 (1) ◽  
pp. 127-133 ◽  
Author(s):  
L E Crooks ◽  
M Arakawa ◽  
J Hoenninger ◽  
B McCarten ◽  
J Watts ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Field ◽  
Magnetic Resonance ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Resonance Imaging
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