. Author manuscript; available in PMC: 2014 Sep 1.

Published in final edited form as: J Magn Reson Imaging. 2013 May 30;38(3):511–529. doi: 10.1002/jmri.24168

Table 1.

Range of sodium concentrations and relaxation times in some human tissues in vivo. Values were taken from (24, 68, 71, 85, 109, 112, 116, 126, 144) and references within, and are just given as an indicator of the order of values that we can encounter in vivo.

Tissue	[Na⁺] (mM)	T1 (ms)	T2_short (ms)	T2_long (ms)
Brain
WM	20–60	15–35	0.8–3	15–30
GM	30–70	15–35	0.8–3	15–30
CSF	140–150	50–55	-	55–65
Cartilage	250–350	15–25	0.5–2.5	10–30
Blood	140–150	20–40	2–3	12–20
Muscle	15–30	12–25	1.5–2.5	15–30