. Author manuscript; available in PMC: 2016 Apr 1.

Published in final edited form as: J Magn Reson Imaging. 2014 Jul 16;41(4):870–883. doi: 10.1002/jmri.24713

Table 1. Approximate T2* Analysis and Composition of Select Musculoskeletal Tissues.

	Mono- exponential UTE T2*	Bi-Exponential T2* Analysis				Composition				Refs
	Mono- exponential UTE T2*	Short Fraction	Short T2*	Long Fraction	Long T2*	Water Fraction	Collagen Fraction (dry weight)	Proteoglycan Fraction (dry weight)	Other (dry weight)
Cartilage	10–28 ms	18%	0.5 ms	82%	35 ms	65-80%	60%	12%		(28,38-40,53)
TMJ disc	8–19 ms					80%	62%	3%		(77,80)
Knee meniscus	5–8 ms	49%	2 ms	51%	19 ms	70%	60-70%	2–8%		(67,98)
Tendon	1–2 ms	70-90%	< 1 ms	10-30%	8-20 ms	66-75%	65-87%	0.2–5%		(28,81-84,99,100)
Bone (cortical)	0.4–0.8 ms	65-95%	0.3 ms	5-35%	2 ms	20%	30-35% (collagen and protein)		65-70% calcium phosphate	(16,54,61)