MR imaging of transient osteoporosis / 中华放射学杂志

ABSTRACT

Objective To evaluate MR imaging of transient osteoporosis.Methods MR imaging of transient osteoporosis in eight patients was retrospectively reviewed.In all eight patients,routine scanning was performed in axial and coronal planes,including T_1-weighted and T_2-wighted images.Of the eight patients,five were male and three were female,with the age ranging from 12 to 70 years.Neither of the women was pregnant when they visited our hospital.Results The bilateral hips were affected in seven patients,the left shoulder in one.The MR images demonstrated low signal intensity in all eight patients on T_1WI,and normal signal intensity (2 cases),medium-high signal intensity (3 cases),or high signal intensity (3 cases) on T_2WI.The bone marrow edema (BME) pattern involved the acetabulum (one hip),both the femoral head in 5 hips,the femoral neck and the intertrochanteric region through the upper femur in 7 hips,and the upper humerus in one.A small joint effusion was observed in six hips on T_2WI.Conclusion MRI is useful in defining the location and extent of transient osteoporosis.