摘要
目的探讨和分析成人股骨头缺血坏死的早期MRI和CT表现。方法回顾性分析46例63个经手术或穿刺病理证实或经治疗后复查追踪证实为缺血坏死的股骨头影像学资料,将影像检查结果与病理进行对照分析。结果 46例63个股骨头,CT表现2例股骨头局限性轻微骨质疏松,5例广泛性骨质疏松,偶见单个小囊变,股骨头形态轮廓正常,无塌陷,9例股骨头内可见多个小囊变区和硬化灶,股骨头稍下陷,关节间隙略微增宽。30例无异常表现。MRI全部病例或显示"线样征"和/或程度不同的股骨头和股骨颈弥漫性T1低信号T2高信号,T2脂肪抑制股骨头内可见弥漫性斑片状高信号,关节腔内积液征。结论 MRI和CT在成人股骨头缺血坏死的早期诊断起重要作用,而MRI则能更早、更佳地显示其异常征象,更生动、直观且准确地反映缺血坏死的部位和范围,特异性和敏感性可达100﹪,是一种最佳的早期无创检查方法。
【Objective】To analyze CT and MRI pristine display of adult caput femoris ischemic necrosis.【Methods】Cross-check analyze CT and/or MRI Display and pathological section results of 46 cases of adult caput femoris ischemic necrosis.【Results】Among 46 cases of adult caput femoris ischemic necrosis and 63 caput femoris ischemic necrosis,CT shows local little osteoporosis in 2 cases of caput femoris ischemic necrosis and cyclopedic osteoporosis in 5 cases of caput femoris ischemic necrosis,seldom see single bursula meta,caput femoris＇capitiform and adumbration are normal,no collapse,and see more bursula meta and hardening focus in 9 cases of caput femoris ischemic necrosis,caput femoris slightly sag,joint space fat are widen.MRI shows string sign differen degree,caput femoris and collum femoris diffuse T1 low signal and T2 high signal,T2 fat restraint caput femoris can see diffuse en plaque high signal,fluidify signe in articular cavity.【Conclusion】CT and MRI have important value to early diagnose adult caput femoris ischemic necrosis,furthermore,MRI is a best and no trauma method,sensibility and specificity can reach 100%,accurate rate more than CT.
出处
《中国现代医学杂志》
CAS
CSCD
北大核心
2010年第9期1402-1404,共3页
China Journal of Modern Medicine
