Table I.

MR imaging parameters for articular cartilage evaluation

	Sequence
Imaging parameter	3D WATS	T1ρ	T2
TR (ms)	10	4.7	4,613
TE (ms)	4.7	2.3	16 × n (n = 1–7)
Flip angle (º)	20	35	90
Matrix size	400 × 400	256 × 256	320 × 320
Field of view (cm)	14	14	14
Section thickness (mm)	1.5	4	4
Spin-lock pulse (Hz)		440
TSL (ms)		1, 10, 20, 30, 40
Bandwidth (kHz/pixel)		0.7
Scan time (minute:second)	4:10	15:45	14:50

3D WATS, 3D T1-weighted fast field echo with water-selective excitation; TR, repetition time; TE, echo time; TSL, time of the spin-lock pulse