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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Magn Reson Med. 2012 Dec 4;70(5):1360–1368. doi: 10.1002/mrm.24564

Figure 4. B1 Sensitivity.

Figure 4

a) B1 amplitude was varied between 50% to 110% of the calibrated value for the tested modules (*Note that B1 amplitude at 110% could not be tested for the Silver-Hoult–pair module because peak amplitude exceeded scanner capability). T2-prep time was 60 ms for all modules, and the coefficient of variation (CV) is shown as a function of transmitter voltage. b) Typical images are shown. Red arrows identify regional inhomogeneities. The mBIR-4 and the proposed T2-prep module provided a larger range of insensitivity to B1 than the MLEV4 and Silver-Hoult–pair modules.