System and SAR characterization in parallel RF transmission

• Published in: Magnetic resonance in medicine Vol. 67; no. 5; pp. 1367 - 1378
• Main Authors: Zhu, Yudong, Alon, Leeor, Deniz, Cem M., Brown, Ryan, Sodickson, Daniel K.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.05.2012
• Subjects: Algorithms; B1 shimming; high field MR; Humans; Image Enhancement - methods; Image Interpretation, Computer-Assisted - methods; linear system; Magnetic Resonance Imaging - methods; parallel RF transmission; Radio Waves; Reproducibility of Results; RF coil; RF power; RF safety; RF shimming; SAR; Sensitivity and Specificity; system calibration
• ISSN: 0740-3194; 1522-2594; 1522-2594
• DOI: 10.1002/mrm.23126

The markedly increased degrees of freedom introduced by parallel radiofrequency transmission presents both opportunities and challenges for specific absorption rate (SAR) management. On one hand they enable E‐field tailoring and SAR reduction while facilitating excitation profile control. On other h...