TABLE 1.

Comparative Relaxation Times at Magnetic Field Strengths of 3 T and 7 T*

Tissue	T1, ms		T1 Ratio (7 T/3 T)	T2, ms		T2 Ratio (7 T/3 T)
	3 T	7 T		3 T	7 T
Patellar cartilage	1016	1568	1.54	39	32	0.82
Subcutaneous fat	404	583	1.44	48	46	0.96
Femoral bone marrow	381	549	1.44	52	47	0.90
Lateral gastrocnemius muscle	1256	1553	1.24	29	23	0.79
Synovial fluid	2565	4813	1.87	653	325	0.50

*Adapted from Jordan et al.³²