摘要
目的:分析股骨头缺血坏死的平片、CT及MRI表现,并对其应用价值作一初步探讨。材料和方法:对32例股骨头缺血坏死的X线平片、CT及MRI摄片进行双盲分期和Kappa-致性检验及对照分析。结果:X线平片诊断主要依据股骨头塌陷、囊变、碎裂、硬化及股骨头变扁和股骨颈缩短。CT则以星芒缺失征、斑片状骨硬化、新月征、囊变及碎裂为特点。MRI则主要依据股骨头内出现斑片状或不规则形T_1低信号T_2高信号、双线征、新月征、囊变及股骨头塌陷。结论:MRI是诊断股骨头缺血坏死最敏感有效的方法,其次为CT。对于早期病变的发现需依靠MRI或CT检查。X线平片虽对早期诊断缺乏一定的优势,但依然是本病诊断和分期的常规手段。
Purpose: To analyse imaging appearances and clinical application value of plain film, CT and MRI in patients with avascular necrosis of femoral head. Materials and methods: The plain film, CT and MRI of 32 cases with avascular necrosis of femoral head were compared each other. Double blind classification and kappa test were completed. Results: On plain film the signs consisted of femoral head sink, cystoid degeneration, fragmentation, osteosclerosis, femoral head flattening and femoral neck shortening. On CT scan, diagnosis was established by stelliform defect, osteosclerosis, crescent sign, cystoid degeneration and fragmentation. On MR scan, diagnosis was established by femoral head focal hy-pointense on T1 - weighted imaging and hyperintense on T2-weighted imaging, double line sign, crescent sign, cystoid degeneration and femoral head collapse. Conclusion: MRI was the most sensitive methods in three of them. The second was CT scan. Early diagnosis would be established by MRI or CT. Plain film lacked advantage for early diagnosis, however it was still the conventional way.
出处
《影像诊断与介入放射学》
1997年第4期241-243,共3页
Diagnostic Imaging & Interventional Radiology
关键词
股骨头坏死
CT
MRI
X线诊断
Avascular necrosis of the femoral head Tomography, X-ray computed Magnetic resonance imaging
