核素骨显像对骶髂关节、髋关节及 脊柱关节病的诊断

目的 建立国人骶髂关节／软组织、骶髂关节／骶骨、髋关节／软组织、髋关节／股骨放射性比值的正常参考值，探讨其在脊柱关节病（ＳｐＡ）中的诊断价值，方法 对无腰腿症状、ＣＴ检查骶髂关节正常的不同年龄者１３０例２６０组关节分为４组：１５～１９岁、～２４岁，～３９岁，≥４０岁，进行全身骨骼及骶髂关节、髋关节周围结构的ＳＰＥＣＴ显像，取得４组不同部位放射性比值，同时对临床诊断为ＳｐＡ的４５例患者进行骨显像，计

Bone scintigraphic imaging of sacroiliac joint, hip joint and spondyloarthritis

Objective　To establish normal reference value of radioactivity ratio of sacroiliac joint /soft tissue,sacroiliac joint/sacrum, hip joint/soft tissue and hip joint/thighbone in Chinese, and discuss its diagnostic value in spondyloarthritis (SpA). Methods　260 joints from 130 normal individuals were divided into 4 groups according to ages: 15～19 years, ～24 years, ～39 years and ≥40 years. They have exhibited no waist-leg symptom and a normal CT exam in sacroiliac joint. SPECT was performed on whole body skeleton as well as sacroiliac joint and hip joint to measure the radioactivity ratio in these joints respectively. In the same time, SPECT was also undertaken in 45 patients with SpA to calculate the radioactivity ratio of sacroiliac joint/soft tissue and sacroiliac joint/sacum. Results　After statistical processing, a normal reference value of all radioactivity ratio in four groups was obtained. Analysis on the data in 4 groups showed that the variant coefficient of sacroiliac joint/sacrum is minimal, and thus to be used as a judgment for sacroiliac joint/sacrum osteometabolism. In 45 patients with SpA, 23 cases were undifferentiated spondyloarthritis. The radioactivity ratio of sacroiliac joint/sacrum increased in 20 cases (86.9%), while other joint disorders occurred in 21 cases. Conclusion　The radioactivity ratio of sacroiliac joint/sacrum is of important value in early diagnosis for SpA.