【摘要】 目的:比较常规X线平片、多层螺旋CT常规横断位及多平面重组(multi-planar reformation,MPR)在骨样骨瘤诊断中的价值。方法:回顾性分析41例骨样骨瘤病人在X线平片、CT常规横断位及MPR图像上的表现及其对瘤巢及瘤巢内钙化显示能力。结果:41例病灶均表现为一圆形或卵圆形的透亮区,其周围有不同程度的骨质硬化。41例中仅8例在X线平片上能显示瘤巢,瘤巢显示率为19.5%(8/41);所有检查者均清楚显示瘤巢周围骨质硬化,但均不能显示瘤巢内钙化;41例CT横断位图像及MPR图像均能清楚显示瘤巢,18例CT横断位图像能显示瘤巢内钙化,30例病人在MPR图像能显示瘤巢内钙化;横断位CT图像和MPR对瘤巢内钙化显示率分别为43.9%(18/41)和73.2%(30/41)。结论:瘤巢是确诊骨样骨瘤的关键,CT是显示瘤巢的重要检查方法,MPR图像是显示瘤巢内钙化的最佳方法,有助于做出准确诊断。更多还原

【Abstract】 Objective:To analyze the conventional plain film radiography and axial and MPR imaging findings in osteoid osteoma.Methods:Forty-one cases of osteoid osteoma proved by surgiesy and pathology were collected,the imaging findings of osteoid osteoma and The ability of conventional plain film radiography, axial and MPR images in demonstrating the nidus and the surrounding reaction were analyzed.Results:The imaging manifestations of osteoid osteoma revealed a circular or oval nidus with different bone sclerosis around the nidus. Among 41 cases, only 18 cases showed calcification of nidus on conventional axial images, whereas as 30 cases with MPR images showed calcification of nidus. The display ratas of nidus were 43.9% for conventional CT images and 73.2% for MPR images, respectively.Conclusion:Nidus is the key in diagnosing the osteoid osteoma correctly. CT is an important method for displaying nidus. MPR is the best method to demonstrate the calcification of nidus and probably leads to a correct diagnosis.更多还原