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目的:探讨SPECT/CT融合显像技术在诊断肺动脉栓塞(pulmonary embolism,PE)中的价值。方法:45例PE疑似患者分别行常规肺通气/灌注(V/P)平面显像及SPECT/CT断层融合显像,比较两种检测方法诊断PE的敏感性、特异性、准确性的差异。结果:常规肺V/P显像的敏感性、特异性、准确性分别为78.6%、58.8%和71.1%,SPECT/CT断层融合显像的敏感性、特异性、准确性分别为92.9%、88.2%和91.1%,两种影像学检查在定性诊断PE方面有统计学差异(χ2=14.63,P<0.05)。结论:SPECT/CT肺断层融合显像法优于常规肺V/P显像,可作为诊断PE的一种新的常规检测方法。
Objective: To investigate the value of SPECT / CT fusion imaging in the diagnosis of pulmonary embolism (PE). Methods: 45 cases of suspected PE patients underwent routine lung ventilation / perfusion imaging and SPECT / CT fusion imaging. The sensitivity, specificity and accuracy of the two methods were compared. Results: The sensitivity, specificity and accuracy of routine pulmonary V / P imaging were 78.6%, 58.8% and 71.1% respectively. The sensitivity, specificity and accuracy of SPECT / CT fusion imaging were 92.9% 88.2% and 91.1%, respectively. There was a significant difference in the qualitative diagnosis of PE between the two imaging examinations (χ2 = 14.63, P <0.05). Conclusion: SPECT / CT fusion imaging is better than conventional pulmonary V / P imaging and can be used as a new routine method for the diagnosis of PE.