Axial fat-suppressed T2-weighted MR images of the left gastrocnemius muscle (outlined muscle in image) obtained with rabbits in the prone position.

(a): At 5 days after surgery, image shows grade 1 signal intensity (ie, signal intensity was isointense or slightly hyperintense compared with that in the control group). (b, c): Color-coded parametric maps are derived from DCE MR imaging. Corresponding Ktrans and Vp values are 4.513 ×10−2 min-1, 0.152ml/ml, respectively. (d): At 2 weeks after surgery, image shows grade 2 signal intensity (ie, intermediate to high signal intensity compared with that in the control group). (e, f): Color-coded parametric maps are derived from DCE-MR imaging. Corresponding Ktrans and Vp values are 11.681 ×10−2 min-1, 0.272ml/ml, respectively. (g): At 4 weeks after surgery, image shows grade 3 signal intensity(ie, high signal intensity compared with that in the control group). (h, i): Color-coded parametric maps are derived from DCE MR imaging. Corresponding Ktrans and Vp values are 16.203 ×10−2 min-1, 0.422ml/ml, respectively.