FIG. 5.

(a) Axial image and (b) slice-averaged and rescaled image of in vivo human knee acquired using CODE with TE = 0.23 ms. T_p,sinc = 0.1 ms, flip angle = 4°, FOV (= THK) = 25 cm, isotropic resolution = 0.65 mm³, and scan time = ~5 min. In (a), an axial knee image was chosen at the level of the patellofemoral joint among the 3D data set, showing an anatomical structure such as the patellar, the femoral lateral and medial trochlear groove articular cartilage, the femur, and the anterior cruciate ligament insertion at the lateral femoral condyle, along the left-to-right direction in the slice. With a closer look, some blurry shades around the knee can be recognized in (a), which are pointed to (white arrows). These signals arise from the foam pads placed between the knee and coil to minimize motion artifacts. These pads are more clearly seen in the image shown in (b) which was obtained by averaging 20 adjacent slices and adjusting the image intensity.