. Author manuscript; available in PMC: 2017 Feb 1.

Published in final edited form as: NMR Biomed. 2015 Sep 24;29(2):96–106. doi: 10.1002/nbm.3379

Table 1.

Unloaded and loaded Q values for a 10 × 15 cm surface coil at a variety of operating frequencies. Higher Q ratios correspond to better coil performance. The number of capacitors in the coil was varied with frequency to achieve optimal unloaded Q in each case.

Freq. (MHz)	Q_U	Q_L	Q_U / Q_L	Capacitors
16.3	250	210	1.19	2
32.6	360	215	1.67	2
63.9	350	160	2.19	2
78.6	430	130	3.31	2
123.2	390	75	5.20	4
297.0	115	20	5.75	8