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Fig. 2A. —Lateral tibial plateau of 35-year-old woman. B0 =
main magnetic field. On midcoronal spin-echo image (TR/TE, 1,000/14; field of
view, 45 mm; slice thickness, 1 mm; matrix size, 512 x 512), variations
in signal intensity produce characteristic three-layer appearance. In central
region of plateau (c), in which higher-signal-intensity transitional layer (t)
is thin and radial striations extend across thick deep layer (d), minor
fibrillation is seen at low-signal-intensity surface (s). In submeniscal
region (sm) and at tibial eminence (e), transitional layer is much thicker.
Chemical shift produces low-signal-intensity interface at subchondral bone
(arrowheads). Surface of tibial eminence (short arrows) does
not interface with saline and cannot be clearly visualized because of contact
of wax enclosure with joint surface.
