Progress in Magnetic Resonance Imaging for Medical Diagnosis
Although Magnetic Resonance Imaging (MRI) established itself in the past five years to a well accepted diagnostic tool, it still is in the state of extensive research. This is due to the availability of large bore superconductive magnets with ever increasing field-strengths. Thus not only MR-imaging is possible but also MR-in vivo spectroscopy becomes clinically relevant: the spatial separation of spectral lines being proportional to the magnetic field the trend to higher magnetic field strengths is evident. However, with increasing magnetic fields some problems arise in the high frequency excitation of the nuclei as well as in detection of the irradiated MR-signal. In this paper results obtained with the world’s first 2 Tesla MR-system are discussed and some considerations on a 4 Tesla system are presented.
KeywordsGradient Coil High Magnetic Field Strength Chemical Shift Artifact High Frequency Excitation Relevant Diagnosis
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