Optimal linear combinations of array elements for B1 mapping

Magnetic Resonance in Medicine

Volumn 62, Issue 4, 2009, Pages 902-909

  Malik, Shaihan J ^a   Larkman, David J ^a   Hajnal, Joseph V ^a  

^a HAMMERSMITH HOSPITAL   (United Kingdom)

Author keywords

B1 mapping; Linear combinations; Parallel transmission MRI

Indexed keywords

LINEAR TRANSFORMATIONS; MAPPING; SIGNAL TO NOISE RATIO;

B1 MAPPING; COMPLEX PARAMETER; HEALTHY VOLUNTEERS; LINEAR COMBINATIONS; OPTIMAL TRANSFORMATION; OPTIMUM CONDITIONS; PARALLEL TRANSMISSION; UNIFORM DISTRIBUTION;

MATHEMATICAL TRANSFORMATIONS;

ACCURACY; ARTICLE; CONTROLLED STUDY; HUMAN; HUMAN EXPERIMENT; NORMAL HUMAN; NUCLEAR MAGNETIC RESONANCE IMAGING; PHANTOM; SIGNAL NOISE RATIO; SIMULATION;

EID: 70349622977     PISSN: 07403194     EISSN: 15222594     Source Type: Journal    
DOI: 10.1002/mrm.22068     Document Type: Article

References (10)

1. Nehrke K, Boernert P. Improved B1-mapping for multi RF transmit systems. In: Proc 16th Annual Meeting ISMRM, Toronto; 2008:353.
2. Brunner DO, Pruessmann KP. A matrix approach for mapping array transmit fields in under a minute. In: Proc 16th Annual Meeting ISMRM, Toronto; 2008:354.
3. Vernickel P, Roschmann P, Findeklee C, Ludeke KM, Leussler C, Overweg J, Katscher U, Grasslin I, Schunemann K. Eight-channel transmit/receive body MRI coil at 3T. Magn Reson Med 2007;58:381-389. (Pubitemid 47267656)
4. Yarnykh VL. Actual flip-angle imaging in the pulsed steady state: a method for rapid three-dimensional mapping of the transmitted radiofrequency field. Magn Reson Med 2007;57:192-200.
5. Nehrke K. On the steady-state properties of actual flip angle imaging (AFI). Magn Reson Med 2009;61:84-92.
6. Insko EK, Bolinger L. Mapping of the radiofrequency field. J Magn Reson Ser A 1993;103:82-85.
7. Callaghan MF, Ulloa JL, Larkman DJ, Irarrazaval P, Hajnal JV. Measuring coil sensitivities of transmit and receive arrays with demonstration of RF shimming In: Proc 14th Annual Meeting ISMRM, Seattle; 2006:2627.
8. Van de Moortele PF, Akgun C, Adriany G, Moeller S, Ritter J, Collins CM, Smith MB, Vaughan JT, Ugurbil K. B1 destructive interferences and spatial phase patterns at 7 T with a head transceiver array coil. Magn Reson Med 2005;54:1503-1518. (Pubitemid 41740779)
9. Golub G, Van Loan C. Matrix computations (Johns Hopkins Studies in Mathematical Sciences). Baltimore, MD: Johns Hopkins University Press; 1996.
10. Brunner DO, Pruessmann KP. An interferometric approach for B1 of RF transmitter arrays. In: Proc 25th Annual Meeting ESMRMB, Valencia, Spain; 2008:94.