双能量CT对痛风性关节炎的诊断价值

被引:22
作者
李文智
罗林
杨昆良
蒋超梅
朱勇华
李正海
机构
[1] 曲靖市第一人民医院放射科
关键词
痛风性关节炎; 计算机体层成像; 尿酸盐结晶;
D O I
暂无
中图分类号
R816.8 [外科、骨科]; R589.7 [嘌呤(Purine)代谢障碍];
学科分类号
100106 [放射医学]; 100201 [内科学];
摘要
目的 探讨双能量CT(DECT)对痛风性关节炎的诊断价值。方法 对52例患者行关节DECT扫描,病例组为21例痛风患者,对照组为非痛风患者31例,根据扫描部位有无金属内固定将对照组分为2组,6例有内固定为对照1组,25例无内固定为对照2组。扫描部位包括双侧足、踝关节、膝关节、手或腕关节,利用痛风结石软件进行分析,并以绿色伪彩显示,记录是否能够显示痛风石以及其分布情况,统计尿酸盐结晶沉积病灶数。对患者检查部位进行临床体检,统计临床病灶数目及部位。同时检测所有患者的血尿酸、血肌酐、总胆固醇及甘油三酯水平。对比病例组与对照组的DECT检查结果及临床体检之间的差异。统计学处理采用t检验和卡方检验。结果(1)病例组21例患者均显示多发痛风石,以趾(指)间关节、楔骨间关节及其周围软组织最显著;对照1组6例患者有内固定一侧均有绿色标记显示,对侧关节均未见显示;对照2组25例患者,除1例显示少许绿色标记外,其余均未见绿色显示,与病例组差异有统计学意义(P=0.000)。DECT诊断痛风性关节炎的敏感性、特异性、准确性分别为100%(21/21)、77.4%(24/31)、86.5%(45/52)。(2)21例痛风患者尿酸盐沉积DECT共发现237处,是临床估计病变部位的2.58倍(临床估计病灶共92处),差异有统计学意义(P=0.000)。(3)病例组患者血尿酸、血肌酐、甘油三酯及总胆固醇水平较对照组明显增高,差异有统计学意义(P=0.000,0.002,0.021,0.039)。结论 DECT能以伪彩色编码的形式清晰显示痛风患者尿酸盐沉积,包括一些亚临床痛风,对痛风性关节炎的诊断有潜在的临床价值。
引用
收藏
页码:915 / 919
页数:5
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