Slice-selective RF pulses for in vivo B1+ inhomogeneity mitigation at 7 tesla using parallel RF excitation with a 16-element coil

• Published in: Magnetic resonance in medicine Vol. 60; no. 6; pp. 1422 - 1432
• Main Authors: Setsompop, Kawin, Alagappan, Vijayanand, Gagoski, Borjan, Witzel, Thomas, Polimeni, Jonathan, Potthast, Andreas, Hebrank, Franz, Fontius, Ulrich, Schmitt, Franz, Wald, Lawrence L, Adalsteinsson, Elfar
• Format: Journal Article
• Language: English
• Published: United States 01.12.2008
• Subjects: Algorithms; Brain - anatomy & histology; Image Enhancement - methods; Image Interpretation, Computer-Assisted - methods; Magnetic Resonance Imaging - instrumentation; Magnetic Resonance Imaging - methods; Phantoms, Imaging; Reproducibility of Results; Sensitivity and Specificity; Signal Processing, Computer-Assisted

Slice-selective RF waveforms that mitigate severe B1+ inhomogeneity at 7 Tesla using parallel excitation were designed and validated in a water phantom and human studies on six subjects using a 16-element degenerate stripline array coil driven with a butler matrix to utilize the eight most favorable...