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Nuclear Magnetic ResonanceMRI Resource Directory:
 - NMR -
 
(NMR) Nuclear Magnetic Resonance is a physical phenomenon of the magnetic property of nuclei, which have a positive nuclear spin quantum number.
Under the influence of an external static magnetic field this nuclei will precess about the direction of the magnetic field with an angular frequency (Larmor frequency). Through absorption and emission of RF energy (gradients, RF coils) at the resonance frequency (Larmor equation) and the processing of this raw data by the Fourier transformation - physical, chemical, electronic, and structural information about molecules can be obtained (NMR Magnetic Resonance Spectroscopy, Magnetic Resonance Imaging).
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• View the NEWS results for 'Nuclear Magnetic Resonance' (1).Open this link in a new window.

• View the DATABASE results for 'Nuclear Magnetic Resonance' (11).Open this link in a new window

 
Further Reading:
  Basics:
MRI's inside story
Thursday, 4 December 2003   by www.economist.com    
Nuclear magnetic resonance with no magnets
Wednesday, 18 May 2011   by www.physorg.com    
  News & More:
Neuromelanin-Sensitive MRI Identified as a Potential Biomarker for Psychosis
Sunday, 10 February 2019   by www.nimh.nih.gov    
A powder to enhance NMR signals
Thursday, 12 December 2013   by phys.org    
New Paradigm for Nanoscale Resolution MRI Experimentally Achieved
Friday, 27 September 2013   by www.sciencedaily.com    
Nuclear Magnetic Resonance ImagingMRI Resource Directory:
 - NMR -
 
Creation of images of objects such as the body by use of the nuclear magnetic resonance phenomenon. The immediate practical application involves imaging the distribution of hydrogen nuclei (protons) in the body. The image brightness in a given region depends on the spin density and the relaxation times, with their relative importance determined by the particular imaging technique employed. Image brightness is also affected by motion such as blood flow.

See also Zeugmatography and Magnetic Resonance Imaging MRI.
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• View the NEWS results for 'Nuclear Magnetic Resonance Imaging' (1).Open this link in a new window.
 
Further Reading:
  News & More:
New quantum sensing technique allows high-resolution nuclear magnetic resonance spectroscopy
Wednesday, 17 June 2020   by phys.org    
MRI Resources 
Coils - Image Quality - MRCP - Non-English - Contrast Agents - MRA
 
Nuclear Magnetic Resonance Signal
 
The electromagnetic signal in the radio-frequency range produced by the precession of the transverse magnetization of the spins. The rotation of the transverse magnetization induces a voltage in a receiving antenna (coil), which is amplified and demodulated by the receiver circuits. Electromagnetic signal in the radio frequency range produced by the precession of the transverse magnetization of the spins. The rotation of the transverse magnetization induces a voltage in a coil, which is amplified and demodulated by the receiver;; the signal may refer only to this induced voltage.
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• View the DATABASE results for 'Nuclear Magnetic Resonance Signal' (2).Open this link in a new window

 
Further Reading:
  Basics:
Spin echoes, CPMG and T2 relaxation - Introductory NMR & MRI from Magritek
2013   by www.azom.com    
NMR Spectroscopy - Theory
   by www.shu.ac.uk    
  News & More:
A powder to enhance NMR signals
Thursday, 12 December 2013   by phys.org    
Nuclear Overhauser Effect
 
(NOE) A change in the steady state magnetization of a particular nucleus due to irradiation of a neighboring nucleus with, which it is coupled by means of a spin spin coupling interaction. This interaction must be the primary relaxation mechanism of these nuclei. Such an effect can occur during decoupling and must be taken into account for accurate intensity determinations during such procedures.
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• View the DATABASE results for 'Nuclear Overhauser Effect' (3).Open this link in a new window

Nuclear Spin
 
An intrinsic property of certain nuclei that gives them an associated characteristic angular momentum and magnetic moment also known as inherent spin (those with odd numbers of protons and/or neutrons in their nucleus). Nuclei that do not exhibit this characteristic will not produce a NMR signal.
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• View the NEWS results for 'Nuclear Spin' (1).Open this link in a new window.

• View the DATABASE results for 'Nuclear Spin' (10).Open this link in a new window

MRI Resources 
Artifacts - Lung Imaging - Shielding - MRI Centers - Mass Spectrometry - Spectroscopy
 
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