Wiley Encyclopedia of Biomedical Engineering 2006
DOI: 10.1002/9780471740360.ebs0843
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NMR Imaging

Abstract: In 1946, the phenomenon of nuclear magnetic resonance (NMR) was first observed independently by Felix Bloch and Edward Purcell. NMR is a phenomenon exhibited by atoms with an odd number of protons or neutrons which possess nuclear spin angular momentum. In the classical description the phenomenon can be described as spinning charged spheres which produce a small magnetic moment. Developments in NMR over the decades that followed, including the spin echo and different RF pulse sequences, led to widespread use o… Show more

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Cited by 10 publications
(18 citation statements)
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“…The technician can modify parameters affecting the spatial and temporal resolution, the field of view, the contrast, the speed of the acquisition and the influence of various types of artifacts. This is possible due to what is known as k -space, the data matrix obtained directly from the magnetic resonance (MR) scanner before any kind of processing and the Fourier transform application, which will provide the final reconstructed image [1,5]. …”
Section: Introductionmentioning
confidence: 99%
“…The technician can modify parameters affecting the spatial and temporal resolution, the field of view, the contrast, the speed of the acquisition and the influence of various types of artifacts. This is possible due to what is known as k -space, the data matrix obtained directly from the magnetic resonance (MR) scanner before any kind of processing and the Fourier transform application, which will provide the final reconstructed image [1,5]. …”
Section: Introductionmentioning
confidence: 99%
“…Esto dará como resultado un momento magnético neto que se situará en equilibrio. Este momento magnético neto, también llamado magnetización neta, es la base para la creación de la señal de RM [29][30][31][32]. [30,31] Tal y como se ha comentado previamente, los átomos con un número impar de protones o neutrones poseen un momento angular o espín.…”
Section: Principios Físicosunclassified
“…Este momento magnético neto, también llamado magnetización neta, es la base para la creación de la señal de RM [29][30][31][32]. [30,31] Tal y como se ha comentado previamente, los átomos con un número impar de protones o neutrones poseen un momento angular o espín. En ausencia de un campo magnético externo, los espínes estarán orientados aleatoriamente, pero cuando se sitúan bajo un campo magnético intenso, los espínes se alinean con éste, proporcionando una magnetización "longitudinal" neta, Mz, en la dirección del campo aplicado (supongamos z).…”
Section: Principios Físicosunclassified
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