. Author manuscript; available in PMC: 2015 Feb 1.

Published in final edited form as: Knee Surg Sports Traumatol Arthrosc. 2013 Jan 31;22(2):298–307. doi: 10.1007/s00167-013-2397-z

Table 2.

Imaging protocols used in this study.

Sequences	Quadrature Coil on scanner 1	8-channel Knee Coil on scanner 2 (ASSET acceleration factor = 2)
Sagittal fat-saturated T₂-weighted fast spin-echo (FSE) images	TR/TE = 4300/51 ms, FOV = 14 cm matrix size = 512 × 256, NEX = 2 slice thickness = 2.5 mm, gap = 0.5 mm	TR/TE = 4300/51 ms, FOV = 14 cm matrix size = 512 × 256, NEX = 2 slice thickness = 2.5 mm, gap = 0.5 mm
Sagittal 3D fat- suppressed spoiled gradient-echo (SPGR) images	TR/TE = 15.0/6.7 ms, FOV = 14 cm flip angle = 12°, NEX=0.75, matrix = 512 × 512, slice thickness = 1 mm	TR/TE = 18.2/3.5 ms, FOV = 14 cm flip angle = 12°, NEX = 1, matrix = 512 × 512, slice thickness = 1 mm
Sagittal 3D T_1ρ quantification using MAPSS [23]	TR/TE = 9.3/3.7 ms, FOV = 14 cm matrix size = 256 × 128, slice thickness = 4 mm, view per segment = 64, time of recovery = 1.5 s, time of spin-lock = 0, 10, 40, 80 ms, frequency of spin-lock = 500 Hz.	TR/TE = 7.4/2.7 ms, FOV = 14 cm matrix size = 256 × 192, slice thickness = 4 mm, view per segment = 64, time of recovery = 1.5 s, time of spin-lock = 0, 10, 40, 80 ms, frequency of spin-lock = 500 Hz.