. Author manuscript; available in PMC: 2019 Jan 16.

Published in final edited form as: Magn Reson Med. 2017 Sep 25;79(5):2842–2851. doi: 10.1002/mrm.26943

Table 2.

Percent Noise Level Change From Each Channel of the Receive Coil by Introducing Four uHDC Blocks to the Phantom (as Shown in Figs. 3d and 3e) and Five uHDC Blocks to a Human Head Imaging (as Shown in Figs. 3f and 3g) at 3T

Coil element	Phantom (%)	In vivo (%)
1	7.54	4.01
2	10.97	26.48
3	20.00	17.70
4	21.59	25.48
5	26.13	25.84
6	16.27	27.21
7	17.11	23.80
8	13.38	7.29
Average ± SD	16.62 ± 5.61	19.73 ± 8.62

Note: The noise level from each channel is the standard deviation (SD) of noise acquired from prescans, during which time the excitation pulse was absent.