Table A1.

MR imaging scan sequences used for knee PTOA scoring.

Sequence
Sagittal T1-weighted water-excitation three-dimensional (3D) fast low-angle shot (3D FLASH): 20/7.6 [TR msec/ TE msec]; 12° [flip angle]; 160 mm [field of view, FOV]; 1.5 mm/0 [slice thickness/interslice gap]; 80 slices per slab; 130 hz/pixel [bandwidth, BW]; 512 × 512 [matrix]; right/left [phase encoding axis]; one average of two excitations.
Coronal Intermediate-weighted turbo-spin echo (TSE): 3850/29; 7 [echo train length, ETL]; 140 mm; 3 mm/0 mm; 41 slices; 352 hz/pixel; 307 × 384; right/left; one average.
Sagittal † T2*-weighted WE-3D double echo steady state (WE-3D DESS): 16.3/4.7; 25°; 140 mm; 0.7 mm/0 mm; 185 hz/pixel; 307 × 384; anterior/posterior; one average.
Sagittal Intermediate-weighted TSE with fat-saturation: 3460/36; 5 ETL; 160 mm; 3 mm/0 mm; 248 hz/pixel; 314 × 448; superior/inferior; one average.

^† Additional MR images were reconstructed in the axial and coronal planes.