目的：探讨99mTc-MDP SPECT/CT融合显像对痛性足副舟骨的影像学特征及诊断价值。方法：回顾性分析32例（男11例，女21例）临床确诊为痛性足副舟骨患者的99mTc-SPECT/CT影像学资料及临床资料，分别计算同机CT、SPECT/CT显像对其诊断的灵敏度、特异度和准确性，不同方法的诊断结果比较采用χ2检验。结果：32例患者64只足，51只足存在副舟骨，其中痛性足副舟骨35只，均为Ⅱ型。同机CT诊断痛性足副舟骨的灵敏度是40%（14/35）、特异度是81.25%（13/16）、阳性预测值是82.35%（14/17），阴性预测值是38.24%（13/34）。SPECT/CT诊断痛性足副舟骨38只，其中假阳性3只；显示阴性13只，均为真阴性，SPECT/CT诊断痛性副舟骨的灵敏度是100%（35/35）、特异度是81.25%（13/16）、阳性预测值是92.10%（35/38），阴性预测值是100%（13/13）。经比较，SPECT/CT对痛性足副舟骨的诊断准确性高于同机CT显像（P＜0.05）。结论：99mTc-MDP SPECT/CT融合显像可准确诊断痛性足副舟骨，有临床应用价值。
Abstract
Objective: To investigate the imaging features and diagnostic value of 99mTc-MDP SPECT/CT fusion imaging in painful accessory navicular bone. Methods: 99mTc-SPECT/CT imaging data and clinical data of 32 patients(11 males, 21 females) with confirmed painful accessory navicular bone were retrospectively analyzed. Diagnostic sensitivity, specificity and accuracy of the two different investigations(CT and SPECT/CT imaging) were calculated. Different methods of diagnosis were compared with ?字2 test. Results: Thirty-two patients with 64 feet have 45 case accessory navicular bone, and have the 35 case painful accessory navicular bone. For diagnosis of painful accessory navicular bone, CT has a sensitivity of 40%(14/35), specificity of 81.25%(13/16), positive predictive value of 82.35%(14/17), and negative predictive value of 38.24%(13/34). SPECT/CT has a sensitivity of 100%(35/35), specificity of 81.25%(13/16), positive predictive value of 92.10%(35/38), negative predictive value of 100%(13/13). 99mTc-MDP SPECT/CT has more accurate than CT imaging(P<0.05). Conclusion: 99mTc-MDP SPECT/CT fusion imaging can be used to diagnose painful accessory navicular bone, and has clinical application value.
关键词
跗骨 /
体层摄影术 /
发射型计算机 /
单光子 /
体层摄影术 /
螺旋计算机
Key words
Tarsal bones /
Tomography, emission-computed, single-photon /
Tomography, spiral computed
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