1.CT versus MRI in diagnosis of early avascular necrosis of femoral head
Shanwen HU ; Lei WANG ; Xiaoli HOU ; Jigui WANG ; Xinhui LUO
Journal of Clinical Medicine in Practice 2019;23(7):40-43
Objective To compare the value of computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of early avascular necrosis of femoral head. Methods Totally 36 patients (47 hips) with avascular necrosis of femoral head were selected and diagnosed by surgical pathological examination. All the patients underwent CT and MRI examinations respectively, and the results of surgery were used as the standard to judge the efficacy of CT and MRI in the diagnosis of early avascular necrosis of femoral head. Results In this study, 29 patients with early avascular necrosis of femoral head (38 hips) were confirmed by surgical pathology. The positive detection rate, sensitivity and specificity of MRI for early avascular necrosis of femoral head were 97. 37％, 97. 30％ and80. 00％ respectively, which were higher than 78. 95％, 76. 67％ and 11. 76％ of CT (χ2= 4. 537, 4. 887, 9. 815, P = 0. 033, 0. 027, 0. 001). Conclusion CT and MRI have their own advantages and disadvantages in the diagnosis of early avascular necrosis of femoral head. Compared with CT, MRI has higher positive detection rate, sensitivity and specificity.
2.CT versus MRI in diagnosis of early avascular necrosis of femoral head
Shanwen HU ; Lei WANG ; Xiaoli HOU ; Jigui WANG ; Xinhui LUO
Journal of Clinical Medicine in Practice 2019;23(7):40-43
Objective To compare the value of computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of early avascular necrosis of femoral head. Methods Totally 36 patients (47 hips) with avascular necrosis of femoral head were selected and diagnosed by surgical pathological examination. All the patients underwent CT and MRI examinations respectively, and the results of surgery were used as the standard to judge the efficacy of CT and MRI in the diagnosis of early avascular necrosis of femoral head. Results In this study, 29 patients with early avascular necrosis of femoral head (38 hips) were confirmed by surgical pathology. The positive detection rate, sensitivity and specificity of MRI for early avascular necrosis of femoral head were 97. 37％, 97. 30％ and80. 00％ respectively, which were higher than 78. 95％, 76. 67％ and 11. 76％ of CT (χ2= 4. 537, 4. 887, 9. 815, P = 0. 033, 0. 027, 0. 001). Conclusion CT and MRI have their own advantages and disadvantages in the diagnosis of early avascular necrosis of femoral head. Compared with CT, MRI has higher positive detection rate, sensitivity and specificity.
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