Imaging Diagnosis of the Bone Infarct / 实用放射学杂志

ABSTRACT

Objective To evaluate the imaging characteristics of the bone infarct . Methods 13 cases of the bone infarct proved by clinical manifestation and surgical pathology were collected,there were 5 males and 8 females. All patients had X-ray films, 4 were imagedwith CT scanning , 7 were imaged with MRI , and 2 underwent all three techniques . The bone infarct were classified into the early,themiddle and later stages.X-ray , CT and MRI findings of bone infarct ,were analysed characteristics . Results Partial osteoporosin and punctate calcifications could be seen on X-ray and CT , in the early and middle stages , which presented as iso-/low-signal on T_1WIand iso-/high-signal on T_2WI in the center of the bone infarct with a tortuous low-signal on T_1WI and high-signal on T_2WI zonearound.In the later stages,the bone infarct was characterize by irregular sclerosis and tortuous calcification on X-ray and CT,and by low-signal on both T_1WI and T_2WI . Conclusion MRI is the most effective way to find the bone infarct in the early stages , X-ray is helpful in diagnosing the bone infarct in the middle and later stages , CT is more sensitive than X-ray . X-ray ,CT and MRI should be combined in diagnosing the bone infarct .