Improved Spectral Quality Through Enhanced Shimming on a Clinical Platform at 3T and 7T
نویسندگان
چکیده
Introduction Increased spectral resolution and signal-to-noise ratio (SNR) and additional metabolite information not available at B0 = 1.5T are some of the benefits of magnetic resonance spectroscopy (MRS) at higher fields (≥3T) that enhance its attractiveness as an investigational tool for clinical use. However, to obtain high-quality MR spectra, reliable localized shimming is an essential prerequisite. The fast automatic shimming technique by mapping along projections (FASTMAP) (1) and its descendant FASTESTMAP (2) have been successfully used on experimental highfield systems up to 9.4T (3). Their use on an ultra-high field clinical MRI scanner (≥3T) has not been reported. In this work, FASTMAP and FASTESTMAP were implemented on a clinical platform of a 3T and a 7T system, and in vivo proton spectra of the human brain were acquired, and an effect of the improved shimming on the spectra was investigated.
منابع مشابه
MR spectroscopy of the human brain with enhanced signal intensity at ultrashort echo times on a clinical platform at 3T and 7T.
Recently, the spin-echo full-intensity acquired localized (SPECIAL) spectroscopy technique was proposed to unite the advantages of short TEs on the order of milliseconds (ms) with full sensitivity and applied to in vivo rat brain. In the present study, SPECIAL was adapted and optimized for use on a clinical platform at 3T and 7T by combining interleaved water suppression (WS) and outer volume s...
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