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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: IEEE Trans Biomed Circuits Syst. 2014 Oct 28;9(5):725–732. doi: 10.1109/TBCAS.2014.2360383

Table I. RF Coil Element Characteristics and Performances.

Channel number Preset cond. Loading effect Improvement by auto-T&M
➀ ➁ ➂ ➃ ➄ ➅ ➆ ➇ ➉ graphic file with name nihms658319ig1.jpg
|S11|
(dB)		 Reflected RF power of ➀
(%)		 |S11|
(dB)		 Reflected RF power of ➂
(%)		 Δ |S11|➂-➀
(dB)		 RF power loss by loading➃-➁
(%)		 |S11|
(dB)		 Reflected RF power of ➆
(%)		 Δ |S11|➆-➂
(dB)		 RF transmission power improvement➃-➇
(%)
1 27 0.2 7.9 16.3 19.1 16.1 19.3 1.2 11.4 15.1
2 25.3 0.3 11.1 7.7 14.2 7.4 22.3 0.6 11.2 7.1
3 28.4 0.1 11.6 6.8 16.8 6.7 25.6 0.3 14.0 6.6
4 22.7 0.5 6.4 23.1 16.3 22.6 18.2 1.5 11.8 21.6
5 28.2 0.2 9.9 10.3 18.3 10.2 19.3 1.2 9.4 9.2
6 21.1 0.8 8.4 14.4 12.7 13.6 23.7 0.4 15.3 14
7 20.7 0.9 9.8 10.4 10.8 9.5 17.2 1.9 7.3 8.5
8 25.7 0.3 12.7 5.3 13.0 5.1 19.6 1.1 6.9 4.2