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Fig. 4B. —Extensive cartilage defects seen on both 3D double-echo
steady-state and T1-weighted spin-echo images, as shown in 33-year-old woman
with acetabular and femoral articular cartilage damage. Sagittal 3D
double-echo steady-state image (24/6.5; flip angle, 25°) that corresponds
to A renders posterior acetabular (curved black arrows),
anterior femoral (straight black arrows), and posterior femoral
(straight white arrows) cartilage defects more conspicuous than
A. In this patient, subchondral cysts (curved white arrows)
and adjacent cartilage defects are better seen on 3D double-echo steady-state
image than on T1-weighted image.
