Keywords: Joints, Vessels, osteonecrosis of the femoral headDynamic evaluation of retinacular arteries is essential for understanding blood supply changes occurring in osteonecrosis of the femoral head (ONFH). The steady-state (SS) magnetic resonance angiography (MRA) may be an effective method as our previous study suggested, however its feasibility is yet to be determined. Therefore, this study intends to use gadobutrol-based SS MRA to evaluate the blood supply of ONFH.
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