论文部分内容阅读
目的探讨X线与CT在早期股骨头缺血性坏死诊断中的价值。方法采用Toshiba 850 X线机和GE Prospeed CT扫描机,CT扫描层厚和间距为5.0 mm。将41例已确诊为股骨头缺血坏死患者的X线和CT表现进行对照分析。结果X线检查早期改变16髋,其中6髋股骨头中心部位表现局限性密度增高,发生于持重部位;中期改变:共24髋,其中18髋股骨头囊性改变,呈囊性密度减低影。晚期改变:共12髋,其中8髋囊变区涉及股骨头的1/2以上,骨小梁密度增高且不规则。CT表现:早期共15髋,其中9髋股骨头内斑点、条形或斑片状密度增高影;中期22髋,其中19髋股骨头骨皮质中断,其内出现裂隙及散在囊状低密度影;晚期共15髋,其中10例表现为股骨头碎裂、塌陷、变形。结论X线和CT对早期诊断股骨头缺血性坏死有很重要的作用,有利于早期诊断。
Objective To investigate the value of X-ray and CT in the diagnosis of early avascular necrosis of femoral head. Methods Using a Toshiba 850 X-ray machine and a GE Prospeed CT scanner, the CT scan thickness and spacing were 5.0 mm. 41 cases of patients with diagnosed avascular necrosis of femoral head were analyzed by X-ray and CT. Results Sixteen hips were changed in the early stage of X-ray examination. The central part of 6 femoral heads showed localized densities increasing in weight-bearing sites. The mid-term changes were 24 hips, of which 18 femoral heads were cystic and cystic densities were decreased. Late changes: a total of 12 hips, of which 8 cystic lesions involving femoral head more than 1/2, trabecular density increased and irregular. CT manifestations: an early total of 15 hips, of which 9 hip femoral head spot, strip or patch density increased shadow; mid-term 22 hips, of which 19 hip femoral cortex interrupted, which appeared cracks and scattered cystic low density film; A total of 15 hips late, of which 10 cases showed broken, collapse, deformation of the femoral head. Conclusion X-ray and CT are very important for the early diagnosis of avascular necrosis of the femoral head, which is good for early diagnosis.